D Link DAP3760A1 Long Distance Wireless Outdoor Bridge User Manual Usermanual 090513

D Link Corporation Long Distance Wireless Outdoor Bridge Usermanual 090513

Manual

DAP-3760 / DAP-3860 Broadband Wireless Access ODU Quick Installation Guide
Copyright Copyright © 2008 all rights reserved. No part of this publication may be reproduced, adapted, stored in a retrieval system, translated into any language, or transmitted in any form or by any means without the written permission of the supplier. About the Installation Guide This Installation Guide is intended to guide professional installer to install the wireless bridge. It includes procedures assisting you in avoiding unforeseen problems. Conventions This indicates a warning or caution that you have to abide to avoid hazards. This indicates an important note that you must pay attention to. Note: Warning:
Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. IMPORTANT NOTE: FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 100cm between the radiator & your body.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. The availability of some specific channels and/or operational frequency bands are country dependent and are firmware programmed at the factory to match the intended destination. The firmware setting is not accessible by the end user. Professional Installation Required 1. Please seek assistance from a professional installer who is well trained in the RF installation and knowledgeable in the local regulations. 2. The DAP-3760 / DAP-3860 is distributed through distributor and system installer with professional technicians and will not be sold directly through retail store. 3. Product is for Point to Point operation only and cannot be use for Point to Multipoint operation.
TABLE OF CONTENT Professional Installation Required ...................................................................................................2 CHAPTER 1 INTRODUCTION...........................................................................................................5 INTRODUCTION......................................................................................................................................5 PRODUCT SPECIFICATION ......................................................................................................................6 TYPICAL APPLICATIONS.........................................................................................................................8 Tele-medical Broadband Wireless Application .................................................................................8 Campus Broadband Wireless Application.........................................................................................9 CHAPTER 2 PREPARATION BEFORE INSTALLATION............................................................10 SAFETY PRECAUTIONS ........................................................................................................................10 PRODUCT PACKETS..............................................................................................................................10 Mounting Kit................................................................................................................................... 11 Waterproof RJ-45 Connector Kit....................................................................................................11 SITE PLANNING ...................................................................................................................................12 Choosing a Mounting Location......................................................................................................12 Antenna Polarization......................................................................................................................13 CHAPTER 3 HARDWARE INSTALLATION..................................................................................14 ASSEMBLE THE MOUNTING BRACKET.................................................................................................14 POLE MOUNTING.................................................................................................................................15 INTERFACE DEFINITION .......................................................................................................................16 RS-232 ............................................................................................................................................16 Connect Up.....................................................................................................................................18 Grounding.......................................................................................................................................19 POWER ON...........................................................................................................................................19 ALIGN ANTENNA.................................................................................................................................21 CHAPTER 4 CONFIGURATION......................................................................................................23 CONNECT THE BRIDGE TO A LOCAL COMPUTER ..................................................................................23
BASIC SETTINGS..................................................................................................................................24 IP Address.......................................................................................................................................25 Operating Mode..............................................................................................................................25 Base Station ID...............................................................................................................................28 Output Power .................................................................................................................................28 Channel/Frequency.........................................................................................................................28 ADVANCED SETTINGS..........................................................................................................................28 Super Mode.....................................................................................................................................28 Security Settings .............................................................................................................................28 CHAPTER 5 TROUBLESHOOTING ...............................................................................................31 CHAPTER 6 TECHNICAL SUPPORT .............................................................................................32
Chapter 1 Introduction Page 5Chapter 1 Introduction Introduction The DAP-3760 / DAP-3860 Wireless Bridge is a high-performance outdoor-deployable wireless bridge that provides wireless connectivity among multiple network locations. Besides the built-in 23dBi plane antennas, it can cover over 50km if with an external antenna co-used, answering the demand of long distance backhaul with high throughput. Moreover, link aggregation combines multiple links into one to enhance transmission rate; and network backup ensures continuous transmission. As a multi-function bridge, DAP-3760 / DAP-3860 supports Base Station, CPE and PTP modes; among which, LANs in different locations and buildings could easily be connected and access to broadband under PTP mode, realizing “Last Mile” Broadband. With the high throughput and long-distance transmission, DAP-3760 / DAP-3860 is the ideal backhaul solution for Carriers, Service Providers and Enterprises!
Chapter 1 Introduction Page 6Product Specification Specifications CPU IXP425 ,533MHz 16MB Flash System Memory 32MB SDRAM (64MB upgradable) Power Power over Ethernet (Output 20Watts ,48V /0.4A) Operating Frequency FCC : 5.725~5.850 GHz CE : 5.470~5.600 GHz, 5.650~5.725 GHz (Programmable for different country regulations) RF Modulation 802.11a: OFDM (BPSK, QPSK, 16-QAm, 64QAM) RF output power 24dBm (Max. of Avg.) at Radio for FCC (Band 4) 30 dBm EIRP for ETSI 301 893 (Band3) (Controllable for different country regulations) Sensitivity ≤-92dBm @6Mbps ≤-73dBm @54Mbps Channel Spacing 40/20/10/5 MHz FCC Part 15B FCC Part 15C ETSI 301 893 EN301 489-1/17 Regulation Compliance EN60950 Features Operation Mode Base Station , CPE, PtP, P2MP Security WEP 64/128bits, WPA-PSK/WPA2-PSK, WPA/WPA-2 Radio Bandwidth Control 20MHz Super A Fast Frames, Burst, Compression TDM Coordination Traffic management Intel® TDMA For long distance transmission Distance in Meters Auto ACK-Time adjustment Wireless Isolation YES Management Statistics Wireless and Ethernet
Chapter 1 Introduction Page 7Link Test Self-Wireless Connection test Web-based Management (Secure SSL) Command Line Interface (SSH or RS-232 (9600)) Configuration & Management Windows-based Utility, SNMPv2 FW Upgrade Web/Windows management tool Antenna Gain 23dBi (Default for FCC) Frequency Range 5400~5850 MHz HPBW (horizontal) 10° HPBW (vertical) 10° Dimensions 320×320×18mm Physical & Interface Ethernet 10/100 Base T x1 Auto-sense, Negotiation RS-232 YES USB N/A Buzzer Signal Indication Reset Pin Reset system to factory default Enclosure & Environment External Antenna Connector N-Type Enclosure IP-67 (Die-Casting) Level 7 Waterproof Level 17 Beaufort Scale Vent design Antenna Flexibility Mounting Pole Mount (ADC-12 Aluminum alloy) Temperature -30 ~ 70 ℃, (Operating) PCBA Dimensions 160 ×135 mm Weight 2.4 Kg Humidity 10~95%, (Operating)
Chapter 1 Introduction Page 8Typical Applications This section describes the typical applications centering on DAP-3760 / DAP-3860. Tele-medical Broadband Wireless Application DAP-3760 / DAP-3860 mainly plays as a relay with cost-effective solar power, sending medical treatment information between city hospital and local hospital in rural area via broadband wireless connectivity.
Chapter 1 Introduction Page 9Campus Broadband Wireless Application Campus in remote area can access to the Internet via broadband wireless connectivity established by DAP-3760 / DAP-3860 which plays as relay and CPE.
Chapter 2 Preparation before Installation Page 10Chapter 2 Preparation before Installation This chapter describes safety precautions and product information you have to know and check before installing DAP-3760 / DAP-3860. Safety Precautions For your safety and proper installation, please read and follow the instructions below: ONLY qualified service personnel should service or disassemble this device; When installing the device, note the followings: - Do NOT use a metal ladder; - Do NOT work on a wet or windy day; - Do NOT install, use or service the device during a thunderstorm, as this may cause a remote risk of electric shock from lightning; - Wear shoes with rubber soles and heels, rubber gloves, long sleeved shirt or jacket. Ground the device properly with grounding wire to protect against power surges; Use ONLY appropriate accessories for the device. Product Packets The product packets you have received should contain the following items, if any of them are not included or damaged, please contact your local vendor for support. DAP-3760 / DAP-3860 with integrated 23dBi antenna ×1 Mounting Kit ×1 PoE Injector & Power cord ×1 Grounding Wire ×1 Water Proof RJ-45 Connector Kit ×1 Product CD ×1
Chapter 2 Preparation before Installation Page 11 Product CD contains Management Tool, Quick Installation Guide and User Manual! Mounting Kit Wall/Pole Mounting Bracket 1. T-Form Bracket ×1 2. Articulation Pole ×1 3. Pole Mount Bar ×1 Fasteners 4. M8×110 Screw ×3 5. M8 Washer ×3 6. M8 Spring Washer ×3 7. M8 Nut ×1 8. M5×12 Screw ×4 9. M5 Washer ×4 10. Wood Screw ×4 11. Wall/Gyprock Plug ×4 Waterproof RJ-45 Connector Kit 1. Gland ×1 2. Sealing Nut ×1 3. Sealing ×1 Note:
Chapter 2 Preparation before Installation Page 12 Site Planning Prior to installation, develop a checklist that covers all aspects of the installation. A well-developed plan identifies potential problems early so that they can be solved timely. Choosing a Mounting Location Choosing a good mounting location for the bridge is important because it affects the reliability of the wireless link and maximum data rates the bridge system can achieve. The most important considerations are distance between bridges and clearance from obstacles. Signal path distance and clearance In an environment without obstacles in the signal path, the maximum distance between bridges depends primarily on the type of antennas and the free space loss between them. Make sure your proposed mounting site is within range of the remote antenna. Another consideration when planning a wireless link is the Fresnel Zone, which occupies a series of concentric ellipsoid-shaped areas around the LoS path as below:
Chapter 2 Preparation before Installation Page 13The Fresnel Zone is important to the wireless link as it defines an area around the LoS that can introduce RF signal interference if blocked. Objects in the Fresnel Zone such as trees and buildings can diffract or reflect the main signal away from the receiver, changing the RF LoS. Antenna Polarization The integrated antenna radiates and receives polarized radio signals. For the link to operate correctly, two antennas at each end of the link must always be set for the same polarization, either vertical or horizontal. Professional Installation Required
Chapter 3 Hardware Installation Page 14Chapter 3 Hardware Installation The DAP-3760 / DAP-3860 Wireless Bridge is shipped with mounting hardware that accommodates tower or mast installations. This chapter demonstrates the hardware installation procedures, which include Assemble the Hardware Mounting, Pole Mounting, Connect Up, Ground the Wire, Power On and Align the Antennas. Assemble the Mounting Bracket 1. Assemble the main bracket by placing articulation pole to the T-form bracket via a M8×110 screw through the insertion axe and fix with the M8 washer, spring washer and M8 nut; 2. Place the main bracket into the seating and use a spanner to fasten the bracket to CPE main unit with M5×12 screws and M5 washers provided in hardware packets;
Chapter 3 Hardware Installation Page 15Pole Mounting 1. Install the main bracket and the pole mount bar over the top of the pole by securing the drill holes of the pole mount bar to the main bracket ones and insert two M8×110 screws, spring washers and washers through the drill holes and main bracket; 2. Fasten two M8×110 screws and washers through the drill holes and main bracket with a spanner; 3. Adjust the antenna for appropriate tilt / vertical orientation.
Chapter 3 Hardware Installation Page 16Interface Definition DAP-3760 / DAP-3860 currently provides two interfaces at the bottom, which are PoE & Data with a black plastic dummy cover and RS-232 with a white dummy cover. Among which, a black RJ45 waterproof connector will be provided for the PoE & Data interface. RS-232 RS-232 is used for debugging purposes as well as for hard reset of the DAP-3760 / DAP-3860. Below you may find the pin definition of the RS-232. PIN Definition: Pin Assignment Name Description P1 TXD0 Data Transmit 0 P2 DSR0 Data Set Ready 0 P3 RXD0 Data Receive 0 P4 TXD1 Data Transmit 1 P5 RXD1 Data Receive 1 P6 DTR1 Data Terminal Ready P7 Hard Reset Hard reset the unit P8 GND Ground
Chapter 3 Hardware Installation Page 17 To reset the device, short P7 (Hard Reset) to P8 (GND) for less than 1 second and the system will reset. If P7 (Hard Reset) is shorted to P8 (GND) for over 5 seconds, the DAP-3760 / DAP-3860 will be reset to the factory default settings. Below are the views of RS-232 cover and RJ-45 port respectively, please note the label covered on and DO strictly follow the instructions to avoid damaging your equipment! Do NOT connect PoE cable to the RS-232 port; otherwise the port will burnout! If RS-232 cable is used outdoor, please DO add a surge protector to protect the equipment circuit! Strongly recommend to add a lightning arrestor on the RS-232 port to prevent from lightning attack! Warning:
Chapter 3 Hardware Installation Page 18Connect Up Before installing the Ethernet cable with a waterproof RJ-45 connector, it is recommended that the Cat-5 RJ-45 coaxial cable be used for the DAP-3760 / DAP-3860 to power injector connections. 1. To connect to the hole labeled PoE+Data, open the black cover in advance by using a coin or a slotted screwdriver and then screw in the body of the gland and tighten. Connect Up – Step 1 2. Slide the sealing nut to the RJ-45 cable from its middle breach and then insert the sealing into the cable. Connect Up – Step 2 Insert the RJ-45 connector and make sure that the locking tab snaps home. Connect Up – Step 3 Slide the Sealing Nut from its BreachRJ-45 Port
Chapter 3 Hardware Installation Page 19 Screw the sealing on the gland and tighten. Connect Up – Step 4 Grounding The DAP-3760 / DAP-3860 is shipped with a grounding wire. The unit must be properly grounded to protect against power surges. The DAP-3760 / DAP-3860 grounding point can be found on the bottom of the unit. It is supplied with an appropriate grounding lug for attachment to the ODU. Ground the Wire. Grounding Power on To power up the DAP-3760 / DAP-3860, follow the steps bellow: 1. Plug a user-supplied Cat-5 Ethernet cable from your wired LAN (or a computer) into the power injector RJ-45 jack (DATA IN);
Chapter 3 Hardware Installation Page 202. Plug a user-supplied Cat-5 Ethernet cable from the DAP-3760 / DAP-3860 into the power injector RJ-45 jack (P+DATA OUT); 3. Connect the power module to the power injector and plug the AC cord into an AC power receptacle; 4. After being powered on, the device will send out the beep sound lasting about 1.5 seconds, informing you that the DAP-3760 / DAP-3860 is powered up! Wait for about 60 seconds the system will be initialized and start working. 1. Make sure PoE is correctly connected to the RJ-45 port on the DAP-3760 / DAP-3860 labeled PoE+Data, otherwise the extender will be severely damaged! Warning:
Chapter 3 Hardware Installation Page 21 Align Antenna After powering up the wireless bridge, align the integrated antenna to point in the approximate direction of the remote bridge antenna. If the antenna is at a significant angle, use binoculars, satellite global positioning system (GPS) or reference objects to detect the remote bridge or antenna, and then manually adjust the horizontal and vertical positions accordingly. To verify whether the two antennas are correctly pointed to each other, ping the remote wireless bridge. Positioning antenna is to align the local antenna to reach maximum signal strength. Using “Align Antenna” to measure signal strength is convenient and appropriate for most installations, but note that this method is only available in “Peer-to-Peer (CSMA)” mode. To use “Align Antenna”, follow the steps bellow: 1. Login the Web-based management interface of wireless bridge; 2. Open “Peer-to-Peer Setup”, by clicking “Align Antenna”, “Antenna Alignment Tool” window will popup. Set the target RSSI and click “Start” to begin alignment. If the RSSI is below -70 dBm, align the antenna by panning the antenna from side to side and tilting up and down while observing the RSSI value. By doing so, you will be able to know where is the best position for the antenna to reach its maximum signal strength. During adjustment, the device will send out the beep sound, assisting you with the alignment.
Chapter 3 Hardware Installation Page 22 3. After the two integrated antennas are well positioned, secure the bridge mounting fasteners. The bridges now are ready to be configured and incorporated into your network.
Chapter 4 Configuration Page 23Chapter 4 Configuration The units to be installed should be configured before physical installation. During this process, the installer can set the unit’s IP address to the one within desired address range and set each unit up with the MAC address of its peer unit ready to establish a wireless link. It is recommended that this procedure be carried out on the bench before physical installation. This chapter describes how to configure your bridge for the first time. You can use the bridge’s web-based interface to complete the initial configuration. Connect the Bridge to a Local Computer If you are configuring the bridge locally (without connecting its power injector to a wired LAN), connect a PC to the power injector’s Ethernet port using a Category 5 Ethernet cable. 1. Assign a static IP address to your PC which is in the same network segment with the wireless bridge. As the default IP address of this unit is 192.168.1.1, you may choose from 192.168.1.2 to 192.168.1.254. 2. Test the link status between your PC and the wireless bridge. Start a command prompt and execute a continuous ping command “ping 192.168.1.1 –t”. If ping to the wireless bridge is successful (as shown below), open Internet browser and enter the bridge’s IP address in the address filed and press Enter.
Chapter 4 Configuration Page 243. Enter the user name (admin) and password (password) to login and make configurations. 4. After configuring the bridge, remove the Ethernet cable from PC and connect the power injector back to your wired LAN port. Basic Settings After login to the Web-based management interface, you will see the “About” page as below. Click “Basic” in the left menu bar to make basic system configurations.
Chapter 4 Configuration Page 25IP Address Enter the settings obtained from your system administrator. The most important setting is IP Address. You may manually assign an IP address or check “DHCP” to automatically obtain one from DHCP server on your network. Do not change the IP address of the bridge while you are configuring with Web-based management interface, otherwise you will disassociate from it! If this occurs, login again with that new IP address; if DHCP is enabled then, login again by entering bridge’s wireless device name in the IP address field. Operating Mode Four operating modes are available in this bridge: Base Station, CPE, Peer to Peer (CSMA) and Peer to Peer (TDMA). Open “Radio” in “Wireless” and select the mode suitable for your application. Base Station Under this mode, the bridge connects directly to the main Ethernet LAN and receives connectivity from other CPE bridges. Note:
Chapter 4 Configuration Page 26 CPE Under this mode, the bridge connects to a remote LAN and that Base Station. Select “Multicli” or “LAN-to-LAN” for your network application and specify the SSID of the corresponding Base Station.
Chapter 4 Configuration Page 27 Peer to Peer (CSMA) Under peer-to-peer (CSMA) mode, set the same channel for all the peer units. Open “Peer-to-Peer Links” (as below) page to enter the MAC address of the remote peer unit. Peer to Peer (TDMA) Under peer-to-peer (TDMA) mode, set one group ID for all the peer units.
Chapter 4 Configuration Page 28Base Station ID The SSID is a unique identifier that bridges use to associate to each other. It is case-sensitive and consists of no more than 32 alphanumeric characters. By default, it is set to “Wireless”. Output Power If the bridges are installed less than 328ft (100m) apart, the output power should be adjusted lower to avoid overloading the bridge’s receivers. To configure the output power, open “Radio” and select the appropriate output power value: Full, Half, and Quarter. Channel/Frequency Channel varies much as the available band differs from country to country. Select a proper operating channel in the drop-down list according to your situation. Advanced Settings After basic settings, you might need to configure some parameters to optimize performance or enhance your network security. Super Mode The super mode is designed to enhance throughput by decreasing data waiting time slot. Open “Radio” and check “Fast Frame”, “Burst’ or “Compression” box accordingly. Security Settings Security settings are effective to prevent unauthorized access to your network. It supports open system, shared key, WPA-PSK, WPA2-PSK and WPA-PSK&WPA2-PSK. To enable security, open “Security” page as below:
Chapter 4 Configuration Page 29 Alternatively, under “Base Station” mode, by clicking “Edit”, the “Security Profile Configuration” window will popup. You can set the SSID and security configuration here. Network Authentication Type  Open System: It allows any device to join the network without performing security check.
Chapter 4 Configuration Page 30 Shared Key: Encryption strength and key are required.  WPA-PSK: No need for specific authentication server. In this so-called WPA Pre-Shared Key, all you have to do is just pre-enter a key in each WLAN node and this is the common way to be adopted in large and middle enterprise as well as residential network.  WPA2-PSK: Only all the clients support WPA2, can it be available. If it is selected, the data encryption type must be AES and the passphrase is required.  WPA-PSK & WPA2-PSK: It provides options of WPA (TKIP) or WPA2 (AES) encryption for the client. If it is selected, the data encryption must be TKIP + AES and the WPA passphrase is required. Data Encryption Select your desired authentication and enter the encryption keys. STA and bridge must use the same keys. By default, it is set to “None”.  64 bit: 10 Hexadecimal digits (any combination of 0-9, a-f, or A-F)  128 bit: 26 Hexadecimal digits (any combination of 0-9, a-f, or A-F)  152 bit: 32 Hexadecimal digits (any combination of 0-9, a-f, or A-F)  TKIP: It will be automatically enabled if WPA-PSK authentication is selected.  AES: It will be automatically enabled if WPA2-PSK authentication is selected.  AES & TKIP: It allows for backwards compatibility with devices using TKIP. Security Encryption Keys  Passphrase: Enter a passphrase and click “Generate Keys” button. You can also enter keys manually. These keys must match the ones of other wireless stations or bridges. Only 8 to 63 characters can be entered.  Key1~Key4: Select the key to be used as the default one and data transmissions are always encrypted using this default key. The other keys are only used to decrypt received data.
Chapter 5 Troubleshooting Page 31Chapter 5 Troubleshooting This chapter provides troubleshooting procedures for basic problems with the bridge. Q 1. What if my bridge fails to connect to the remote one? • Ethernet Link: Check the availability of power to the bridge by observing the LED status on the power injector. - Green: The wireless bridge is connecting to the backhaul network. - Off: The wireless bridge disconnects from the wired network, check whether the power cord and Ethernet cables to the network and bridge are correctly connected. • Basic Configurations: Mismatched basic settings among bridges are the most common cause of connectivity fail. If the bridge does not associate with a remote bridge, check whether options in each device are identical. • Security Settings: Remote bridges attempting to authenticate to your bridge must support the same security options configured in your bridge, such as WEP and WPA (2)-PSK. If your bridge fails to associate with others, check whether the security settings are the same as your bridge settings. • Antenna Alignment: If the methods above are all checked to be correct, you can observe and verify antenna alignment with RSSI value. Q 2. What if I forget my password? You may restore the bridge to its factory default settings in “Backup/Restore Settings” from “Management”. Q 3. What if my bridge encounters a firmware failure? Retrieve the settings you have backed up previously in “Backup/Restore Settings” from “Management”.
Chapter 6 Technical Support Page 32Chapter 6 Technical Support If you still have any trouble using the wireless bridge or you would like to require additional support, please check the following information for support: Z-Com, Inc. Taiwan Business Center 7F-2, No.9. Prosperity RD. I Science-Based Industrial Park Hsinchu ,300 Taiwan Tel: +886-3-5777364 Fax:+886-3-5773359 Sales Contact info@zcom.com.tw FAE Support support@zcom.com.tw Zcomax Technologies, Inc. California Business Center 14545 Valley View Ave., Suite "S" Santa Fe Springs, CA 90670 Tel: +1-562-926-4588 Fax:+1-562-926-7885 New Jersey Business Center 98 Ford Road, Suite 3-F, Denville, NJ 07834, USA Tel: +1-973-664-0310 Fax:+1-973-664-0313 Sales/Product Inquiries: sales@zcomax.com Tech Support/Questions: support@zcomax.com ZCOMAX - United Kingdom Limited European Business Centre 19 Colindale Avenue London NW9 5DS UK Tel:+44-(0)-20-8982-8200 Fax:+44-(0)-20-8201-3232Sales Contact sales@zcomax.co.uk FAE Support support@zcomax.co.uk Z-Dotcom, Inc China Business Centre 168 Long Pan Zhong Road, Jiangsu Software Park, Suite 118 Nanjing, China 210002 Tel: +86-25-84661300 Fax:+86-25-84661313 Sales Contact sales@zcom.com.cn FAE Support support@zcom.com.cn

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