GE MDS DS-INETII Wireless IP/Ethernet Transceiver User Manual 2806E 1 iNET Series
GE MDS LLC Wireless IP/Ethernet Transceiver 2806E 1 iNET Series
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![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 35pressing the key moves the screen back one level in the menu tree.In general, the top portion of menu screens show read-only information (with no user selection letter). The bottom portion of the screen contains parameters that can be selected for further information, alteration of values, or to navigate to other submenus.When you arrive at a screen with user-controllable parameter fields, you select the menu item by pressing an associated letter on the keyboard. If there is a user definable value, the field will clear to the right of the menu item and you can type in the value you wish to use. Follow this action by pressing the key to save the changes. If you make a mistake or change your mind before pressing the key, simply press to restore the previous value.In some cases, when you type a letter to select a parameter, you will see a prompt at the bottom of the screen that says Choose an Option. In these screens, press the keyboard’s to step through the available selections. When the desired option appears, press the key to choose that selection. In some cases, several parameters may be changed and then saved by a single keystroke. The key can be used to cancel the action and restore the previous values.Logging Out Via Terminal Emulator or TelnetFrom the Main Menu screen, press Q to quit and terminate the session.Navigating via Web BrowserNavigating with a Web browser is straightforward with a framed “homepage.” The primary navigation menu is permanently located on the left-hand side of this page. Simply click on a desired menu item to bring it to the forefront.NOTE: To maintain security, it is best to log-out of the menu systementirely when you are done working with it. If you do not logout, the session automatically ends after 10 minutes of inac-tivity.Logging Out Via Web Browser Click on Logout in the left-hand frame of the browser window. The right-hand frame will change to a logout page. Follow the remaining instructions on this screen.NOTE: In the menu descriptions that follow, parameter options/range,and any default values are displayed at the end of the textbetween square brackets. Note that the default setting isalways shown after a semicolon: [available settings or range;default setting]ESCAPEENTERENTERESCAPESPACEBARENTERESCAPE](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-43.png)
![36 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.13.3 BASIC DEVICE INFORMATIONThis section contains detailed menu screens and settings that you can use to specify the behavior of the unit.3.3.1 Starting Information ScreenOnce you have logged into the Management System, you will be pre-sented with a screen that provides an overview of the transceiver and its current operating condition. It provides an array of vital information and operating conditions. Figure 3-9. Starting Information Screen•Device Mode—Current operating mode of the unit as it relates to the radio network.•Device Name—This is a user-defined parameter that will appear in the heading of all pages.(To change it, see Network Configuration Menu on Page 40.)•Network Name—The name of the radio network in which the unit is associated.•IP Address—Unit’s IP address [192.168.1.1]•Device Status—Condition of the unit’s association with an Access Point. At the Access Point:•Alarmed—A alarm event has been logged and not cleared.•Operational—Unit operating normally.At a Remote:•Scanning—The unit is looking for an Access Point beacon signal.•Exp(ecting) Sync(hronization)—The unit has found a valid beacon signal for its network.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-44.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 41•Device Mode (User Review Recommended)—Either Access Point or a variation of a Remote. [Remote]•Network Name (User Review Required)—Name of the radio network of which this unit will be a part. Essential for association of Remotes to the Access Point in the network. [Not Programmed]TIP: For enhanced security, consider using misspelled words, a combi-nation of letters and numbers, and a combination of upper and lower case letters. Also, the Network Name should be at least nine characters long. This helps protect against sophisticated hackers who may use a database of common words (for example, dictio-nary attacks) to determine the Network Name.•SNTP Server—Address of SNTP server (RFC 2030) from which the transceiver will automatically get the time-of-day startup time. Without an SNTP server, the date and time must be man-ually set. An AP will try to get the time and date from the SNTP server only if an IP address is configured. It will continue to retry every minute until it succeeds. A remote will get the time and date from the SNTP server, if an IP address is configured. Otherwise it gets it from the AP at authentication time. The transceivers use UTC (Universal Time Constant) with a configurable time offset. [0.0.0.0]•IP Address Configuration Presents a menu for configuring the local static IP address of the transceiver. Detailed explanations are provided in the section titled IP Address Configuration Menu on Page 42•Ethernet Port Configuration—Presents a menu for defining the sta-tus of the Ethernet port (enabled or disabled), the Ethernet rate limit, link hardware watch (enabled/disabled), and the Ethernet link poll address. Detailed explanations of this menu are con-tained in Ethernet Port Configuration Menu on Page 43•DHCP Server Config(uration)—Menu for configuration of DHCP services by the Access Point unit. DHCP provides “on-the-fly” IP address assignments to other LAN devices, including MDS iNET 900 units. [Disabled]•SNMP Config Menu—SNMP configuration parameters.•Mobility Mode—Here, you determine whether the transceiver is enabled or disabled for mobility operation. Note that this selec-tion may appear on both Access Point and Remote menus, but it only takes effect when set on Remotes. Additional settings and information for mobility operation are contained in Mobile Data Configuration on Page 54. [enabled, disabled; disabled].•Maximum Remotes (AP Only)—Number of Remotes permitted to be associated with (served by) this Access Point. [50]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-49.png)
![42 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Database Timeout (AP Only)—This sets the database “age time” (Remote Listing Menu (Access Points Only) on Page 84) to determine when a remote is declared as unavailable. The timer may be set from 0 to 255 minutes and resets each time a message is received from a remote. [0–255 minutes; 5 minutes]•Database Logging (AP Only)—Determines which types of devices will be reported as “added” or “deleted” from the AP’s database (See Section 3.8.1, Performance Information Menu (beginning on Page 76). In the case of deletions, this information is trig-gered by a timer expiration as described in the item above. Available selections are: Remote, All (endpoints and remotes), or Disabled.•Ethernet Address (Display Only)—Hardware address of this unit’s Ethernet interface.•Wireless Address (Display Only)—Hardware address of the unit’s wireless interface.3.4.2 IP Address Configuration MenuThe radios use a local IP address to support remote management and serial device services. The IP address of a radio can be set as a static IP address or as a dynamic IP address. When static IP addressing is used, the user must manually configure the IP address and other parameters. When dynamic addressing is used, the radio uses a DHCP Client process to obtain an IP address from a DHCP Server, along with other parame-ters such as a net mask and a default gateway.Figure 3-15. IP Address Configuration Menu](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-50.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 43CAUTION: Changes to any of the following parameters while communicating over the network (LAN or over-the-air) may cause a loss of communication with the unit being configured. Commu-nication will need to be re-established using the new IP address.•IP Address Mode—Defines the source of the IP address of this device. [Static, Dynamic; Static]•Dynamic Mode—Enabling this option forces the transceiver (AP or Remote) to obtain an IP address from any DHCP server avail-able on the LAN. Dynamic Mode is also known as DHCP Client mode. [Disabled]•Static IP Address (User Review Recommended)—Essential for con-nectivity to the transceiver’s MS via the LAN port and to send Ethernet data over the network. Enter any valid IP address that will be unique within the network. [192.168.1.1]This field is unnecessary if DHCP is enabled. [255.255.0.0]Static IP Netmask—The IPv4 local subnet mask. This field is unnecessary if DHCP is enabled. [255.255.0.0]•Static IP Gateway—The IPv4 address of the network gateway device, typically a router. This field is unnecessary if DHCP is enabled. [0.0.0.0]The lower three lines of the screen show the actual addressing at the transceiver whether it was obtained from static configura-tion or from a DHCP server.NOTE: Any change made to the above parameters results in theCommit Changes option appearing on screen. This allows all IPsettings to be changed at the same time.3.4.3 Ethernet Port Configuration MenuThe transceiver allows for special control of the Ethernet interface, to allow traffic awareness and availability of the backhaul network for redundancy purposes.NOTE: The iNET 900 network port supports 10BaseT connections,but does not support 100BaseT connections. This should notpresent a problem because most hubs/switches auto-switchbetween 10BaseT and 100BaseT connections. Confirm thatyour hub/switch is capable of auto-switching data rates.To prevent Ethernet traffic from degrading iNET 900 perfor-mance, place the iNET in a segment, or behind routers.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-51.png)
![44 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1Figure 3-16. Ethernet Port Configuration Menu•Ethernet port enabled/disabled—Allows remote disabling of Ethernet traffic for security purposes. [Enabled, Disabled; Enabled]•Ethernet Rate Limit—The transceiver will send alarms (SNMP traps) when the rate reaches 50%, 75%, and 100% to help iden-tify potential problems with traffic.•Ethernet Link (H/W) Watch (AP Only)—Detects the lack of an Ether-net connection to the LAN port at the electrical level (link integ-rity). The current AP will broadcast a beacon signal indicating its “NOT AVAILABLE” status so Remotes that hear it do not try to associate to it. Once the Ethernet connection is restored, this beacon signal changes to “AVAILABLE” and Remotes are allowed to join in. [Disabled]•Ethernet Link Poll Address (AP Only)—When an IP address is pro-vided, the Access Point pings the remote IP device every 2 min-utes to test the integrity of the backhaul link. If this link is not available, the AP will advertise its “NOT AVAILABLE” status in the beacon signal so Remotes do not try to associate to it. Once the IP address is reachable, this beacon signal changes to “AVAILABLE” and Remotes are allowed to join in. 0.0.0.0 dis-ables this function. Any other valid IP address enables it. [0.0.0.0]3.4.4 DHCP Server ConfigurationA transceiver can provide automatic IP address assignments to other IP devices in the network by providing DHCP (Dynamic Host Configura-tion Protocol) services. This service eliminates setting individual device IP address on Remotes in the network, but it still requires thoughtful planning of the IP address range. One drawback to network-wide auto-](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-52.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 45matic IP address assignments is that SNMP services may become inac-cessible as they are dependent on fixed IP addresses.The network can be comprised of radios with the DHCP-provided IP address enabled or with DHCP services disabled. In this way, you can accommodate locations for which a fixed IP address if desired.Figure 3-17. DHCP Server Configuration MenuNOTE: There should be only one DHCP server active in a network(MDS iNET 900 or other DHCP server). If more than oneDHCP server exists, network devices may randomly get theirIP address from different servers every time they request one.•Server Status—Enable/Disable responding to DHCP requests to assign an IP address. [Disabled/Enabled; Disabled]•DHCP Netmask—IP netmask to be assigned along with the IP address in response to a DHCP request. [0.0.0.0]•Starting Address—Lowest IP address of the range of addresses to be provided by this device. [0.0.0.0]•Ending Address—Highest IP address in the range of addresses to be provided by this device. A maximum of 256 addresses is allowed in this range. [0.0.0.0]•DNS Address—Domain Name Server address to be provided by this service.•WINS Address—Windows Internet Naming Service server address to be provided by this service.•Restart DHCP Server—Selecting this option forces the transceiver to start servicing DHCP requests using the Starting Address. Payload data will not be interrupted but may experience some delays as new addresses are distributed.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-53.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 47Invisible place holderFigure 3-18. SNMP Server Configuration MenuFrom Access PointThis menu provides configuration and control of vital SNMP functions. •Read Community String—SNMP community name with SNMPv1/SNMPv2c read access. This string can be up to 30 alpha-numeric characters.•Write Community String—SNMP community name with SNMPv1/SNMPv2c write access. This string can be up to 30 alpha-numeric characters.•Trap Community String—SNMP community name with SNMPv1/SNMPv2c trap access. This string can be up to 30 alpha-numeric characters.•V3 Authentication Password—Authentication password stored in flash memory. This is used when the Agent is managing pass-words locally (or initially for all cases on reboot). This is the SNMPv3 password used for Authentication (currently, only MD5 is supported). This string can be up to 30 alpha-numeric characters.•V3 Privacy Password Privacy password stored in flash memory. Used when the SNMP Agent is managing passwords locally (or initially for all cases on reboot). This is the SNMPv3 password used for privacy (DES encryption). This string can be between 8 and 30 alpha-numeric characters.•SNMP Mode—This specifies the mode of operation of the radio’s SNMP Agent. The choices are: disabled, v1_only, v2_only, v3_only. v1-v2, and v1-v2-v3. If the mode is disabled, the Agent does not respond to any SNMP traffic. If the mode is v1_only, v2_only, or v3_only, the Agent responds only to that version of SNMP traffic. If the mode is v1-v2, or v1-v2-v3, the Agent responds to the specified version of SNMP traffic. [v1-v2-v3]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-55.png)
![48 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Trap Version—This specifies what version of SNMP will be used to encode the outgoing traps. The choices are v1_traps, v2_traps, and v3_traps. When v3_traps are selected, v2-style traps are sent, but with a v3 header. [v1 Traps, v2 Traps, v3 Traps]•Auth Traps Status—Indicates whether or not traps will be gener-ated for login events to the transceiver. [Disabled/Enabled; Dis-abled]•SNMP V3 Passwords—Determines whether v3 passwords are managed locally or via an SNMP Manager. The different behav-iors of the Agent depending on the mode selected, are described in SNMP Mode above.•Trap Manager #1–#4— Table of up to 4 locations on the network that traps are sent to. [Any standard IP address]NOTE: The number in the upper right-hand corner of the screen is theSNMP Agent’s SNMPv3 Engine ID. Some SNMP Managersmay need to know this ID in order interface with the trans-ceiver’s SNMP Agent. The ID only appears on the screenwhen SNMP Mode is either v1-v2-v3 or v3_only.3.5 RADIO CONFIGURATIONThere are two primary data layers in the transceiver network—radio and data. Since the data layer is dependent on the radio layer working prop-erly, configuration of the radio items should be reviewed and set before proceeding. This section explains the Radio Configuration Menu, (Figure 3-19 for AP, Figure 3-20 for Remote). The Configuration Menu is followed a secondary menu, the Skip Zone Options.3.5.1 Radio Configuration Menu Figure 3-19. Radio Configuration Menu From iNET Access Point(iNET II data rate selection is 512/1024 kbps)](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-56.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 49Figure 3-20. Radio Configuration MenuFrom Remote Unit•RF Output Power (User Review Recommended)—Sets/displays RF power output level. Displayed in dBm. Setting should reflect local regulatory limitations and losses in antenna transmission line. (See “How Much Output Power Can be Used?” on Page 135 for information on how to calculate this value.)[20–30; 20]•Data Rate (Remote Only. AP fixed is at 256/512 kbps for iNET; 512/1024 kbps for iNET II.)—Shows the over-the-air data rate setting for the Remote radio. Remotes can operate at one of two data rates when communicating with an AP; 256 kbps or 512 kbps (512 kbps or 1 Mbps for iNET II). 512 kbps data rates (1 Mbps for iNET II) are possible with strong RF signal levels, typically stronger than –77 dBm RSSI including a 15 dB fade margin.When the data rate is set to AUTO, the remote radio is able to change speeds based on the signal quality criteria set in the Auto Data Rate submenu described later in this section (see Page 52).[256, 512, AUTO; AUTO]•Compression (AP Only)—Enabling this option uses LZO com-pression algorithm for over-the-air data. Varying levels of data reduction are achieved depending on the nature of the informa-tion. Text files are typically the most compressible, whereas binary files are the least compressible. On average, a 30% increase in throughput can be achieved with compression enabled.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-57.png)
![50 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Dwell Time (Not applicable to iNET II)—Duration (in millisec-onds) of one hop on a particular frequency in the hopping pat-tern. Dwell Time should be set to 32.8 ms. (This field is only changeable on an Access Point. Remotes get their value from AP upon association.) [16.4, 32.8, 65.5, 131.1, 262.1; 32.8]TIP: If a packet is being transmitted and the dwell time expires, the packet will be completed before hopping to the next frequency. •Beacon Period (Not applicable to iNET II)—Amount of time between Beacon transmissions (in msec).Available Intervals: Normal (104 ms), Fast (52 ms), Faster (26 ms), Slow (508 ms), Moderate (208 ms). These values provide rel-atively quick association times where Fast is very fast (≈ 5 sec) and the other end, the largest recommended value, the 508 ms period is slow (≈ 60 sec). [Normal, Fast, Faster, Slow, Moderate; Nor-mal]TIP: Increasing the Beacon Period will provide a small improvement in network data throughput. Shortening it decreases the time needed for Remotes to associate with the AP. A short beacon period is usually only a benefit when there are mobile Remotes in the network.•Hop Pattern Seed (AP Only; Not applicable to iNET II)—A user-select-able value to be added to the hop pattern formula. This is done in the unlikely event that identical hop patterns are used with two collocated or nearby networks. Changing the seed value will minimize the potential for RF-signal collisions in these sit-uations. (This field is only changeable on an Access Point. Remotes read the AP’s value upon association.) [0 to 255; 1]•Fragment Threshold—Before transmitting over the air, if a packet exceeds this number of bytes, the transceiver sends the packet in multiple fragments that are reassembled before being delivered over the Ethernet interface at the receiving end. Only even num-bers are acceptable entries for this parameter. Over-the-air data fragmentation is not supported on AP units. (See “Network Per-formance Notes” on Page 87 for additional information.) [256–1600 bytes; 1600]TIP: In an interference-free environment this value should be large to maximize throughput. If interference exists then the value should be set to smaller values. The smaller the packet the less chance of it being interfered with at the cost of slightly reduced throughput.•RTS Threshold—Number of bytes for the over-the-air RTS/CTS handshake boundary. (See “Network Performance Notes” on Page 87.) [0 to 1600 bytes; 500]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-58.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 51NOTE: While the transceiver accepts RTS Threshold values below100, the lowest value that works is 100.TIP: Lower the RTS Threshold as the number of Remotes or overall over-the-air traffic increases. Using RTS/CTS is a trade-off, giving up some throughput in order to prevent collisions in a busy over-the-air network.The RTS Threshold should be enabled and set with a value smaller than the Fragmentation Threshold described above. RTS forces the Remotes to request permission from the AP before sending a packet. The AP sends a CTS control packet to grant permission to one Remote. All other Remotes stop transmitting for the specified amount of time.•RSSI Threshold (for alarm)—Level (dBm) below which the received signal strength is deemed to have degraded, and a crit-ical event (alarm) is generated and logged. Under these condi-tions, the PWR lamp flashes, and a trap is sent to the trap manager if SNMP is enabled and set properly. [0 to -120; -90]•SNR Threshold (for alarm)—Value (dB) below which the sig-nal-to-noise ratio is deemed to have degraded and a critical event is generated and logged. Under these conditions, the PWR lamp flashes, and a trap is sent to the trap manager if SNMP is enabled and set properly. [0 to 40; Not Programmed]•RF Hopping Format—Operation compliant to country-specific restrictions into the frequency hopping algorithm. This option must be specified when the order is placed and cannot be mod-ified in the field by the user. Authorizations at time of publica-tion:• Australia: 915–928 MHz band• Brazil: 902-907.5 and 915-928 MHz bands• U.S.A. & Canada: 902–928 MHz band•Chile: 902–928 MHz, selectable hopping, from 1 to 80 chan-nels•iNET II: Single-channel selectable from 2 to 79.NOTE: Other country-specific configurations may be available.Check with your factory sales representative for new addi-tions.•Skip Zones (Editable at AP Only)—Display of current utilization of zones. Each zone consists of eight RF channels. In some instances there may be a part of the spectrum used by another system, that results in “continuous” or “persistent” interference to your system. To alleviate this form of interference, the trans-ceiver may be programmed to “block out” affected portions of the spectrum using the Skip Zones Menu.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-59.png)
![54 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1Figure 3-22 shows the default values for RSSI and SNR parameters but these may be changed to optimize performance in your environment. In properly designed systems, experience has shown that RSSI levels between -50 dBm and -90 dBm provide reliable operation, provided the signal-to-noise ratio is 17 dB or above. Tailoring the thresholds with these baseline values in mind, can provide improved performance in your system.The selections on the Auto Data Rate menu are as follows:•ADR RSSI Threshold—A specified received signal strength value, which, if exceeded by the range of the RSSI Delta setting, causes a data rate change in the transceiver. [-50 to -100; -87 dBm]•ADR RSSI Delta—A user-specified difference from the RSSI Threshold figure which, if exceeded, causes a data rate change in the transceiver. [0-10; 5]•ADR SNR Threshold—A user-specified signal-to-noise ratio, which, if exceeded by the range of the SNR Delta setting, causes a data rate change in the transceiver. [10-30; 26]•ADR SNR Delta—A user-specified difference from the SNR Thresh-old figure which, if exceeded, causes a data rate change in the transceiver. [0-10; 2]3.5.2 Mobile Data ConfigurationBecause a mobile environment is more demanding than fixed-site oper-ation, additional considerations must be made at the time of configura-tion. These key points should be considered for all mobile installations:• The use of middleware in the mobile laptops is important for the correct operation of a mobile data system. This software is not pro-vided by MDS but is available from a number of vendors. Contact your MDS representative for suggested software.• Configure the radios for mobile operation at the Remotes• Set the Remote radios to standard speed (256 kbps for iNET, 512 kbps for iNET II) to optimize coverage• Deploy Access Points so that they provide overlapping coverage• Access Points must use the same network name to allow roamingEnable and disable the mobility function using the Remote radio’s Net-work Configuration Menu (see Figure 3-23). Although a menu selection appears in the Access Point’s Network Configuration menu, this setting may not be changed there. When you enable the Remote radio’s Mobility Mode option, the radio scans for an alternate AP if the RSSI is at or below the RSSI threshold defined in the Radio Configuration screen (see Figure 3-24).After association is lost with an AP, and scanning for an alternate AP is started, the former AP is removed from the scan list for one minute, to](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-62.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 55avoid linking back to the same AP. If no alternate AP is found, a link is eventually made to the same AP as before. This is why it is important to design a system with sufficient overlapping coverage by multiple APs.Invisible place holderFigure 3-23. Enabling Mobility at Remote RadioInvisible place holderFigure 3-24. Radio Configuration Screen—RemoteOther parameter settings that should be reviewed for Mobility Mode:•Compression [AP; disabled]—Data compression is performed by the middleware running on the mobile laptop PC. Gains in effi-ciency are made because middleware compresses data at a higher stack level, and it aggregates multiple data frames and streams into a single packet. Compression at the radio level, although highly efficient, works at the individual packet level.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-63.png)
![56 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Dwell Time [AP; 16.4 milliseconds]—This setting controls the amount of time that the unit spends on each frequency between hops. Due to the varying conditions of a mobile environment, this dwell time setting maximizes the benefits of frequency diversity. Although overall throughput appears to decrease by this setting, two benefits are gained: the effects of multipath fad-ing are minimized through frequency diversity, and the com-pression described above compensates for the decreased throughput.•Beacon Period [AP; Fast]—This parameter defines the interval at which the Access Point transmits a synchronization beacon to all remotes. This setting minimizes resynchronization times when remote radios roam between access points or in highly interrupted coverage areas (dense buildings, for example).•Fragmentation Threshold [remote; 256]—This parameter defines the size of the message packets transmitted over the wireless media. These fragments are reconstructed into the original packet before delivery to the external device at the remote end of the link. In a mobile environment with rapidly changing con-ditions, setting this value to a minimum value improves the probability of packets being sent complete on the first try.•RTS Threshold [AP; 0 -1600 bytes]—This setting is a wireless equivalent to RTS/CTS flow control in a normal communica-tions circuit. This mechanism removes packet collisions caused by the “Hidden Node” scenario, in which remotes can’t hear each other before transmitting. When this value is set below 100, it is essentially disabled.•Skip Zone Options—In some instances there may be a part of the spectrum used by another system, that results in “continuous” or “persistent” interference to your system. To alleviate this form of interference, the transceiver may be programmed to “block out” affected portions of the spectrum using the Skip Zones Menu. This menu is fully described on Page 51.•Auto Data Rate—The transceiver’s Auto Data Rate feature can be very helpful in mobile environments, where signal quality tends to change rapidly. When signal quality is good, 512 kbps data speed can be used. If signal quality degrades, the radio automat-ically switches to 256 kbps. The criteria by which these speed changes will occur is controlled by the parameter settings in the Auto Data Rate Configuration submenu described on Page 52.3.6 CONFIGURING THE SERIAL INTERFACES3.6.1 OverviewThe transceiver includes an embedded serial device server that provides transparent encapsulation over IP. In this capacity, it acts as a gateway](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-64.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 61•IP Protocol—Point to Multipoint [TCP, UDP PPP; TCP]. This is the type of IP port that will be offered by the transceiver’s serial device server.•Multicast IP Address (used instead of Local IP Address when using UDP Point-to-Multipoint.)— Must be configured with a valid Class D IP address (224.0.0.0–239.255.255.255). IP packets received with a matching destination address will be processed by this unit [Any legal IP address; 0.0.0.0].•Multicast IP Port (used instead of Local IP Port when using UDP Point-to-Multipoint.)—This port number must match the number used by the application connecting to local TCP or UDP socket. [1-64,000; COM1: 30010, COM2: 30011]•Local IP Port—Receive IP data from this source and pass it through to the connected serial device. The port number must be used by the application connecting to local TCP or UDP socket. [Any valid IP port; COM1: 30010, COM2: 30011]•Time to Live (TTL)—An IP parameter defining the number of hops that the packet is allowed to traverse. Every router in the path will decrement this counter by one.•Packet Redundancy Mode— For proper operation, all radios’ Serial Packet Redundancy mode must match (Single Packet mode vs. Packet Repeat mode). This is because a transceiver, when in Packet Repeat mode, sends 12 extra characters (sequence numbers, etc.) to control the delivery of the repeated data. Misconfigurations can result in undesired operation.•Data Baud Rate—Data rate (payload) for the COM port in bits-per-second. [1,200–115,200; 19200] •Configuration—Formatting of data bytes. Data bits, parity and stop bits [7N1, 7E1, 7O1, 8N1, 8E1, 8O1, 8N1, 7N2, 7E2, 7O2, 8N2, 8E2, 8O2; 8N1].•Flow Control [Com2 Only]—RTS/CTS handshaking between the transceiver and the connected device. [Enable, Disable; Dis-abled]•Serial Mode—When seamless mode is selected data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until enough bytes have arrived to cover worst-case gaps in transmission. The delay introduced by data buffering may range from 22 to 44 ms, but the radio will not create any gaps in the output data stream. This permits operation with protocols such as MODBUS™ that do not allow gaps in their data transmission. [Seamless, Custom; Seamless]•Seamless Inter-Frame Delay— Number of characters that repre-sent the end of a message (inter-character time-out). UDP packet sizes are delimited and sent out based on the Seamless Inter-Frame Delay only when receiving data through the serial port. MODBUS defines a “3.5-character” parameter. [1–65,535; 4]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-69.png)
![62 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Custom Data Buffer Size (Custom Packet Mode only)—Maxi-mum amount of characters, that the Remote end will buffer locally before starting to transmit data through the serial port. [16, 32, 64, 128, 256; 32]•Commit Changes and Exit Wizard—Save and execute changes made on this screen (Shown only after changes have been entered.) Invisible place holderFigure 3-27. UDP Point-to-Point MenuUse UDP point-to-point configuration to send information to a single device.•Status—Enable/Disable the serial data port. •IP Protocol—UDP Point-to-Point. This is the type of IP port that will be offered by the transceiver’s serial device server. [TCP, UDP, PPP; TCP]•Remote IP Address—Data received through the serial port is sent to this IP address. To reach multiple Remotes in the net-work, use UDP Point-to-Multipoint. [Any legal IP address; 0.0.0.0]•Remote IP Port—The destination IP port for data packets received through the serial port on the transceiver. [1–64,000; COM1: 30010, COM2: 30011]•Local IP Port—Port number where data is received and passed through to the serial port. This port number must be used by the application connecting to this transceiver. [1–64,000; COM1: 30010, COM2: 30011]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-70.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 63•Packet Redundancy Mode— For proper operation, all radios’ Serial Packet Redundancy mode must match (Single Packet mode vs. Packet Repeat mode). This is because a transceiver, when in Packet Repeat mode, sends 12 extra characters (sequence numbers, etc.) to control the delivery of the repeated data. Misconfigurations can result in undesired operation.•Data Baud Rate—Data rate (payload) for the COM port in bits-per-second. [1,200–115,200; 19200] •Configuration—Formatting of data bytes. Data bits, parity and stop bits [7N1, 7E1, 7O1, 8N1, 8E1, 8O1, 8N1, 7N2, 7E2, 7O2, 8N2, 8E2, 8O2; 8N1].•Flow Control (COM2 only)—RTS/CTS handshaking between the transceiver and the connected device.[Enable, Disable; Disabled]•Serial Mode— When seamless mode is selected, data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until enough bytes have arrived to cover worst case gaps in transmission. The delay intro-duced by data buffering may range from 22 to 44 ms, but the radio will not create any gaps in the output data stream. This mode of operation is required for protocols such as MOD-BUS™ that do not allow gaps in their data transmission. [Seamless, Custom; Seamless]•Seamless Inter-Frame Delay— Number of characters that repre-sent the end of a message (inter-character time-out). MOD-BUS defines a “3.5-character” parameter. [1–65,535; 4]•Custom Data Buffer Size (Custom Packet Mode only)—Maxi-mum amount of characters, that the Remote end will buffer locally before starting to transmit data through the serial port. [16, 32, 64, 128, 256; 32]•Commit Changes and Exit Wizard—Save and execute changes made on this screen (Shown only after changes have been entered.)](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-71.png)
![64 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.13.6.4 Configuring for TCP ModeInvisible place holderFigure 3-28. TCP Client Menu (Remote)•Status—Enable/Disable the serial data port. •IP Protocol—TCP Client. This is the type of IP port that will be offered by the transceiver’s serial device server. [TCP, UDP, PPP; TCP]•Primary Host Address—The IP address to be used as a destina-tion for data received through the serial port.[Any legal IP address; 0.0.0.0]•Primary IP Port—The destination IP port for data packets received through the serial port on the transceiver.[Any valid IP port; COM1: 30010, COM2: 30011]•Secondary Host Address—The IP address to be used as a desti-nation for data received through the serial port in case the pri-mary host address is not available.[Any legal IP address; 0.0.0.0]•Secondary IP Port—The destination IP port for data packets received through the serial port on the transceiver used along with the secondary host address above.[Any valid IP port; COM1: 30010, COM2: 30011]•Outgoing Connection’s Inactivity Timeout—Amount of time (in seconds) that they transceiver will wait for data before termi-nating the TCP session. [0–600; 600]•Data Baud Rate—Data rate (payload) for the COM port in bits-per-second. [1,200–115,200; 19200] •Configuration—Interface signaling parameters. Data bits, par-ity and stop bits [7N1, 7E1, 7O1, 8N1, 8E1, 8O1, 8N1, 7N2, 7E2, 7O2, 8N2, 8E2, 8O2; 8N1].•Flow Control [Com2 Only]—RTS/CTS handshaking between the transceiver and the connected device.[Enable, Disable; Disabled]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-72.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 65•Serial Mode— If data buffering is Enabled, the radio will oper-ate in seamless mode. Data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until enough bytes have arrived to cover worst case gaps in trans-mission. The delay introduced by data buffering may range from 22 to 44 ms, but the radio will not create any gaps in the output data stream. This mode of operation is required for protocols such as MODBUS™ and some variants which do not allow gaps in their data transmission.[Seamless, Custom; Seamless]•Seamless Inter-Frame Delay— Number of characters that repre-sent the end of a message (inter-character time-out). MOD-BUS defines a “3.5-character” parameter.[1–65,535; 4]•Custom Data Buffer Size (Custom Packet Mode only)—Maxi-mum amount of characters, that the Remote end will buffer locally before starting to transmit data through the serial port. [16, 32, 64, 128, 256; 32]•Commit Changes and Exit Wizard—Save and execute changes made on this screen (Shown only after changes have been entered.) Invisible place holderFigure 3-29. TCP Server Menu (AP)•Status—Enable/Disable the serial data port. •IP Protocol—TCP Server. This is the type of IP port that will be offered by the transceiver’s serial device server. [TCP, UDP, PPP; TCP]•Local Listening IP Port—Receive IP data from this source and pass it through to the connected serial device. The port num-ber must be used by the application connecting to local TCP or UDP socket.[Any valid IP port; COM1: 30010, COM2: 30011]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-73.png)
![66 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Data Baud Rate—Data rate (payload) for the COM port in bits-per-second. [1,200–115,200; 19200] •Configuration—Interface signaling parameters. Data bits, par-ity and stop bits [7N1, 7E1, 7O1, 8N1, 8E1, 8O1, 8N1, 7N2, 7E2, 7O2, 8N2, 8E2, 8O2; 8N1].•Flow Control (COM2 only)—RTS/CTS handshaking between the transceiver and the connected device.[Enable, Disable; Disabled]•Serial Mode— If data buffering is Enabled, the radio will oper-ate in seamless mode. Data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until enough bytes have arrived to cover worst case gaps in trans-mission. The delay introduced by data buffering may range from 22 to 44 ms, but the radio will not create any gaps in the output data stream. This mode of operation is required for protocols such as MODBUS™ and some variants which do not allow gaps in their data transmission. [Seamless, Custom; Seamless]•Seamless Inter-Frame Delay— Number of characters that repre-sent the end of a message (inter-character time-out). MOD-BUS defines a “3.5-character” parameter. [1–65,535; 4]•Custom Data Buffer Size (Custom Packet Mode only)—Maxi-mum amount of characters, that the Remote end will buffer locally before starting to transmit data through the serial port. [16, 32, 64, 128, 256; 32]•Commit Changes and Exit Wizard—Save and execute changes made on this screen (Shown only after changes have been entered.)3.6.5 Configuring for PPP ModeInvisible place holderFigure 3-30. PPP Menu](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-74.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 67•Status—Enable/Disable the serial data port. •IP Protocol—PPP. This is the type of IP port that will be offered by the transceiver’s serial device server. [TCP, UDP, PPP; TCP]•Device IP Address—IP address that will be assigned to the dialing device once the connection is established. [0.0.0.0]•Data Baud—The baud rate of the serial port of the transceiver to which the external device is connected.[1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200; 19200]•Configuration—Byte format of the serial port [7N1, 7E1, 701, 7N2, 7E2, 702, 8N1, 801, 8N2, 8E2, 802; 8N1]•Flow Control (COM2 only)—RTS/CTS handshaking between the transceiver and the connected device. [Enable, Disable; Disabled]•Serial Mode—When seamless mode is selected, data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until enough bytes have arrived to cover worst case gaps in transmission. The delay introduced by data buffer-ing may range from 22 to 44 ms, but the radio will not create any gaps in the output data stream. This mode of operation is required for protocols such as MODBUS™ that do not allow gaps in their data transmission. [Seamless, Custom; Seamless]•Seamless Inter-Frame Delay— Number of characters that represent the end of a message (inter-character time-out). MODBUS defines a “3.5-character” parameter. [1–65,535; 4]•Custom Data Buffer Size (Custom Packet Mode only)—Maxi-mum amount of characters, that the Remote end will buffer locally before starting to transmit data through the serial port. [16, 32, 64, 128, 256; 32]•Commit Changes and Exit Wizard—Save and execute changes made on this screen (Shown only after changes have been entered.)A PPP session shows the following possible states:•Sending LCP Requests—The PPP server is querying for any cli-ents that need to connect.•Link Established—A successful PPP connection has been negoti-ated and an IP address is assigned.•Port not Enabled—The serial port is disabled.3.6.6 IP-to-Serial Application ExampleYou have a choice to use UDP or TCP to establish communications. This will depend on the type of device you are communicating with at the other end of the IP network. In this example we will use TCP to illus-trate its use. In TCP mode, the transceiver remains in a passive mode offering a socket for connection. Once a request is received, data received at the serial port will be sent out through the IP socket and vice versa, until the](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-75.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 733.7 SECURITY CONFIGURATIONThere are many options to assist you in providing secondary security for your transceivers and the network. These options start with controlling remote access to the network via Telnet, Web Browser, and SNMP. Other areas include multiple levels of encryption and MD5-level secu-rity for HTTP connections.Figure 3-37. Security Configuration Menu(Access Point Version Shown)•Two-Way Authentication— Enable provisioning at the Remote. [Enabled/Disabled; Disabled]Enabling forces the transceiver to check the Approved AP List before continuing the authorization process. In the case of a Remote, the AP must be in the Approved Access Points List before it accepts the beacon as valid. In the case of an AP, a Remote must be in the Approved Remotes List to be granted authorization. Before enabling this option, at least one entry must already exist in the Approved List.IP Protocol UDPSend to Address IP address of the APSend to Port 30011 Receive on Port 30011 Receive on Address 224.254.1.1(The multicast IP address used for the AP’s Send To Address above)Table 3-4. Serial Port Application Configuration (Continued)Transceiver Location Menu Item Setting](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-81.png)
![74 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Encryption— Enable encryption of over-the-air data packets. [Enabled, Disabled; Disabled]Enabling forces the transceiver to use 128-bit encryption on all over-the-air messages. This option requires the Encryption Phrase to be previously configured.•Auto Key Rotation—Enable automatic rotation of encryption keys. [Enabled, Disabled; Disabled]Enabling forces the transceiver to use the key rotation algorithm to generate a new encryption key after 500 kilobytes of informa-tion has been transmitted, or one hour has elapsed. Key rotation prevents reusing encryption data that could result in key-crack-ing, unlike standard 802.11b communications that rely on static encryption keys.•HTTP Access—Prevents remote access through HTTP (Web browser) on Port 80 [Enabled/Disabled; Disabled]•SNMP Access— Prevents remote access through SNMP com-mands on Port 161 [Enabled, Disabled; Enabled]•Telnet Access—Prevents remote access through Telnet sessions on Port 23 [Enabled, Disabled; Enabled]•Approved Access Points/Remotes List (Menu)—Go to menu pro-viding the creation and management list of units permitted (pro-visioned) with which this unit will be permitted to communicate.•Encryption Phrase—Phrase (text & numbers) that will be part of the encryption algorithm.[Up to 29 alphanumeric characters; Blank]•Force Key Rotation— It triggers an immediate key rotation of the encryption keys before the internal counters do it automatically.•HTTP Security Mode—Select security mode/level of login via HTTP browser. HTTP Access disabled prevents access through HTTP. HTTP Security Mode is functional if HTTP Access is enabled. [Basic Auth, MD5 Digest; Basic Auth]Basic mode requires a password, but the actual password text is transmitted in the clear (unencrypted). •User Password—General administrative password only for this unit. Used at log-in via COM1 Port, Telnet and Web browser. [Up to 8-character alphanumeric string without spaces (case-sensitive); admin]TIP: For enhanced security, consider using misspelled words, a combi-nation of letters and numbers, and a combination of upper and lower case letters. Also, the password should use all eight charac-ters. This helps protect against sophisticated hackers who may use a database of common words (for example, dictionary attacks) to determine a password.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-82.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 753.7.1 Approved Remotes/Access Points List MenuThis menu is the same for both Access Points and Remotes and the names change to reflect their mode. Replace “Remotes” with Access Points” in the following description.NOTE: The limit for remotes (in an Access Point) is 255.The limit for Access Points (in a remote) is 104. Figure 3-38. Approved Remotes List Menu•Add Remote—Enter MAC address of Remote.[Any valid 6-digit hexadecimal MAC address; 00:00:00:00:00:00] •Delete Remote—Enter MAC address of Remote.For security purposes, you may want to delete a stolen or depro-visioned radio.•Add Associated Remotes—Add all currently associated remotes to the approved remote list. Alternatively, you can enter each Remote MAC manually.•Delete All Remotes—Remove (complete purge) of all Remotes from current list.•View Approved Remotes—Simple listing of approved Remotes by MAC address, of radios authorized to join this AP. If a Remote is not in this list, it will not be able to associate with this AP.•Save Changes—Save all changes made during this session with this menu. Changes will be implemented only if they are “saved” before exiting this menu.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-83.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 79Access Point. (See “Device Information” on Page 38 for SNTP server identification.) The manually set time and date clock is dependent on the unit’s primary power. A loss of power will reset the clock to January 1, 2002 but will not affect previously stored error events.Figure 3-41. Event Log Menu •Current Alarms (Telnet/Terminal only)—View list of root causes that have placed the Device Status in the alarmed state. (See “Alarm Conditions” on Page 118)•View Log—View a list of events stored in the current log. Some of these events are stored in volatile memory and will be erased with a loss of power. The events are numbered for easier iden-tification and navigation.•Clear Log—Purges the log of all eventsTIP: Save your Event Log before choosing to clear it in order to retain potentially valuable troubleshooting information. (See “Upgrading the Firmware” on Page 93 for an over-view on how to transfer files from the transceiver to a com-puter on the network using TFTP.)•Send Log (Telnet/Terminal only)—Initiate TFTP transfer of the unit’s event Event Log in a plain text (ASCII) file to a TFTP server at the remote location.•TFTP Host Address (Telnet/Terminal only)—IP address of the com-puter on which the TFTP server resides. This same IP address is used in other screens/functions (reprogramming, logging, etc.). Changing it here also changes it for other screens/functions.[Any valid IP address; 127.0.0.1]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-87.png)
![80 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•Filename (Telnet/Terminal only)—Name to be given to the Event Log file sent to the TFTP server for archiving. [Any 40-char alphanumeric string; Blank]NOTE: You may want to change the filename to reflect the type of log you intend to archive and/or its date. •TFTP Time-out (Telnet/Terminal only)—Time in seconds the TFTP server will wait for a packet ACK (acknowledgment) from the transceiver before suspending the file transfer.[10 to 120 seconds; 10]•Syslog Server—IP address to which alarms are sent using the sys-log message format. [Any valid IP address; 0.0.0.0]View Current Alarms Most events, classified as “critical” will make the PWR LED blink, and will inhibit normal operation of the transceiver. The LED will remain blinking until the corrective action has been completed.An alarm condition is different from a log event in the sense that an alarm is persistent in nature. That is, an alarm condition remains as an alarm until it has been cleared by correcting the cause (see Table 4-6 on Page 120 for corrective action).Figure 3-42. Current Alarms Screen](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-88.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 93•TFTP Host Address—IP address of the host computer from which to get the file. [Any valid IP address] This same IP address is used in other screens/functions (reprogramming, logging, etc.). Changing it here also changes it for other screens/functions.•Filename—Name of file to be received by the TFTP server.[Any 40-character alphanumeric string] Verify that this corresponds to the TFTP directory location. May require sub-directory, for example: \firmware\inet\inet-4_4_0.ipk.•TFTP Timeout—Time in seconds the TFTP server will wait for a packet ACK (acknowledgment) from the transceiver before suspending the file transfer. [2 to 60 seconds; 10]•Retrieve File—Initiate the file transfer from the file from TFTP server. Placed into inactive firmware position in the trans-ceiver’s non-volatile memory [Y, N]•Image Verify—Initiate the verification of the integrity of firmware file held in unit.•Image Copy—Initiate the copying of the active firmware into the inactive image.•Reboot Device—Initiate rebooting the transceiver. This will interrupt data traffic through this unit, and the network if per-formed on an Access Point. Intended to be used to toggle between firmware images.NOTE: See “Upgrading the Firmware” on Page 93 for details on setting up the TFTP server.Upgrading the FirmwareFrom time-to-time MDS offers upgrades to the transceiver firmware. One version of the firmware provides core software resources for all transceiver models. Loading new firmware into the unit will not alter any privileges provided by Authorization Keys and does not require the transceiver be taken off-line until you want to operate the unit from the newly installed firmware image.You must use the embedded Management System for all firmware activ-ities, including uploading from a TFTP server.File transfers can be initiated through any of the three Management System gateways: •Terminal-Emulator—Use a terminal emulator program on your PC, such as HyperTerminal, connected directly to the trans-ceiver’s COM1 port via a serial cable.•Telnet—Text-based access to the Management System through a network connection.•Web Browser—Connect to the transceiver using a Web browser on a local PC connected directly to the radio’s LAN port or associated network.](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-101.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 973.9.2 Configuration Scripts MenuFigure 3-55. Configuration Files Menu•TFTP Host Address—IP address of the computer on which the TFTP server resides. [Any valid IP address]•Filename—Name of file containing this unit’s configuration pro-file that will be transferred to the TFTP server. The configura-tion information will be in a plain-text ASCII format.[Any 40-character alphanumeric string] May require sub-directory, for example: config\inet-config.txt. (See “Using Configuration Scripts” on Page 98)NOTE: The filename field is used in identifying the desired incoming file and as the name of file being exported to the TFTP server. Before exporting the unit’s configuration, you may want to name it something that reflect the unit’s services or identifi-cation.•TFTP Timeout—Time in seconds the TFTP server will wait for a packet ACK (acknowledgment) from the transceiver before suspending the file transfer. [10 to 120 seconds; 10]•Retrieve File—Initiate the file transfer of the configuration file from TFTP server into the transceiver.•Send File—Initiate the file transfer from the transceiver’s current configuration file to TFTP server.NOTE: See Upgrading the Firmware on Page 93 for details onsetting up the TFTP server.A Brief Description of Configuration FilesIf you plan to have more than a few radios in your network, use the con-figuration file feature to configure similar units from a common set of parameters. There are over 50 user-controllable settings that can be used to optimize the network and saved into a Configuration File. However,](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-105.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 1071. At the Reprogramming Menu (Page 92), Enter the AP’s IP Address in the TFTP Server field.2. Enter upgrade_from_ap.ipk in the Filename field.NOTE: The filename is case sensitive.3. Perform the firmware download.3.9.5 Radio Test MenuThis area provides several useful tools for installers and maintainers. You can manually key the radio transmitter to make measurements of antenna performance. (See “Antenna Aiming” on Page 125 for details.)Figure 3-58. Radio Test MenuShown with Test Mode set to ONNOTE : Use of the Test Mode will disrupt traffic through the radio. Ifthe unit is an Access Point, it will disrupt traffic through theentire network.Test Mode function is automatically limited to 10 minutes andshould only be used for brief measurement of transmit power.It may also be manually reset to continue with the testing orturned off.•Test Mode—Controls access to the transceiver’s suite of tools. [ON, OFF; OFF]•Frequency—Set radio operating frequency during the testing period to a single frequency. [915.0000 MHz]•TX Output Power—Temporarily overrides the power level set-ting in the Radio Configuration Menu. [20]](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-115.png)
![108 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.1•TxKey—Manually key the radio transmitter for power mea-surements. [Enable, Disable; Disable]•RSSI—Incoming received signal strength on frequency entered in the frequency parameter on this screen (–dBm). This RSSI measurement is updated more frequently than the RSSI by Zone display of the Performance Information menu.3.9.6 Ping Utility MenuFigure 3-59. Ping Utility Menu•IP Addr—Address to send a PING. [Any valid IP address]•Count—Number of PING packets to be sent.•Packet Size—Size of each PING data packet (bytes).•Go—Send PING packets to address shown on screen.Screen will be replaced with detailed report of PING activity. Press any key after viewing the results to return to this menu.3.9.7 Reset to Factory DefaultsTo reset all transceiver parameters back to the factory defaults, you must enter a special code (authorization key) provided by the factory in place of the user name. This procedure is useful when several parameters have been modified, and there is no track of changes. The transceiver returns to a known state, where it may be easier to determine the correct settings.3.9.8 Resetting the PasswordThe user has the ability to return the iNET password to the default value of admin by entering a specific MDS-supplied authorization key at the login prompt. This event causes all radio parameters to return to the fac-](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-116.png)
![144 MDS iNET 900 Series User’s Guide MDS 05-2806A01, Rev. E.16.1.2 COM1 PortTo connect a PC to the transceiver’s COM1 port use a DB-9M to DB-9F “straight-through” cable. These cables are available commercially, or may be constructed using the pinout information in Figure 6-2 and Table 6-2.Figure 6-2. COM1 Port (DCE)(Viewed from the outside of the unit.) 6.1.3 COM2 PortTo connect a PC to the transceiver’s COM2 port use a DB-9F to DB-9M “straight-through” cable. These cables are available commercially, or may be constructed using the pinout information in Figure 6-2 and Table 6-2.Figure 6-3. COM2 Port (DTE)Viewed from the outside of the radioTable 6-2. COM1 Port Pinout, DB-9F/RS-232 InterfacePin Functions DCE1 Unused2 Receive Data (RXD) <—[ Out3 Transmit Data (TXD) —>[ In4 Unused5 Signal Ground (GND)6–9 UnusedTable 6-3. COM2 Port, DB-9M/EIA-232 InterfacePin Functions DTE1 Data Carrier Detect (DCD) In ]<—2 Receive Data (RXD) In ]<—3 Transmit Data (TXD) Out ]—>4 Data Terminal Ready (DTR) Out ]—>5 Signal Ground (GND)15965169](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-152.png)
![MDS 05-2806A01, Rev. E.1 MDS iNET 900 Series User’s Guide 1456.2 FUSE REPLACEMENT PROCEDUREAn internal fuse protects the transceiver from over-current conditions or an internal component failure. It should not be replaced until you are certain you are in a safe (non-flammable) environment.1. Disconnect the primary power source and all other connections to the unit.2. Place the radio on its back and remove the four Phillips screws on the bottom cover.3. Carefully separate the top and bottom covers. There is a flat ribbon cable between the top cover’s LEDs and the unit motherboard. You do not need to disconnect the ribbon cable.4. Locate the fuse and fuse holder between the COM1 port and the power connector. See Figure 6-4 for details.5. Loosen the fuse from the holder using a very small screwdriver. Use a small pair of needle-nose pliers to pull the fuse straight up and remove it.6. Using an Ohmmeter, or other continuity tester, verify the fuse is blown.7. Install a new fuse by reversing the process.Littelfuse P/N: 0454002; 452 Series, 2 Amp SMF Slo-BloMDS P/N: 29-1784A036 Data Set Ready (DSR) In ]<—7 Request-to-Send (RTS) Out ]—>8 Clear-to-Send (CTS) In ]<—9 UnusedTable 6-3. COM2 Port, DB-9M/EIA-232 InterfacePin Functions DTE](https://usermanual.wiki/GE-MDS/DS-INETII/User-Guide-619083-Page-153.png)
