Electronique Telematique ETELM Canada BSTETRA451 Tetra Base Station User Manual netis B maintenance guide V1 1
Electronique Telematique ETELM Canada Inc Tetra Base Station netis B maintenance guide V1 1
Contents
- 1. netis B maintenance guide V1.1.part1
- 2. netis B maintenance guide V1.1.part2
- 3. netis B maintenance guide V1.1.part3
- 4. netis B maintenance guide V1.1.part4
- 5. relevant regulatory warnings
netis B maintenance guide V1.1.part4
![NeTIS MAINTENANCE GUIDE – Version 1.1 101/139 8.3.7.4 Network management terminal configuration 8.4 Multi-site and multi network management terminal 8.4.1 PRESENTATION Our networks can have N independent sites interconnected using IP (Attention, here we are not talking about ISI protocol interconnection). Each site has its own SWITCH and the sites are linked together using IP. Each site has its own primary network management terminal connected using RS232 to the site SWITCH. The diagram representing this is shown below:](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-1.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 102/139 Fig 1 SWITCHES have a priority n° and the two SWITCHES are always active on the network. This priority level is broadcast over the identification channel (see §9.3.4.1). The highest priority SWITCH always manages the network. The others are secondary and backup. The interest is that if the link between the two sites is cut, both sites will operate independently. This architecture also allows for a remote refresh of the technical and administrative databases on each site using a basic download. Example: We modify the SWA-CSA site, we can either refresh the CSB or update the CSB-SWB set. 8.4.2 NETWORK SETTING We are going to parameter the network shown in Fig1. The network management terminal synopsis will be the same whatever the site. Below is shown the synopsis for network management terminal](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-2.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 103/139 8.4.2.1 Sites configuration Below SWITCH A is parametered In conf/param right click,Name tc ts](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-3.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 104/139 Below SWITCH B is parametered In Conf/param right click,Nom tc ts](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-4.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 105/139 8.4.2.2 Starting up the different network management terminal Each network management terminal is started up depending on the connection site N° (see previous chapter). The target of the Tetracs short cut properties must be modified for each site (See below).](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-5.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 106/139](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-6.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 107/139 9. CPUBDT SOFTWARE AUTHENTICATION (Level 2) 9.1 The authentication network management terminal The authentication network management terminal is software the purpose of which is to authenticate equipment manufactured by Etelm using different means of communication. Without this authentication the equipment cannot operate correctly. It consists in the retrieval of an encrypted key by the network management terminal software and its transmission to the equipment on order to unblock it. There are two authentication methods which are: automatic and manual. One uses internet and is automatic, the other involves calling Etelm and manually entering the encryption key. Once the software key is in the software network management terminal, it must be sent to the equipment to be identified either via a network cable or by a crossed serial cable.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-7.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 108/139 9.2 Use The Etelm equipment authentication is needed in several situations: New equipment Expired validity date Major upgrade The authentication procedure only concerns the equipment below.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-8.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 109/139 9.3 Integration 9.3.1 EQUIPMENT The software is installed on any PC, preferably a laptop, so that it can be used close to the equipment to be authenticated (especially if a direct connection is to be made). The PC must have either a serial port or a network port (which is true for the majority of PCs, even older ones, see images) or, of course, both. Physical locations of the network and serial ports 9.3.2 SOFTWARE The authentication network management terminal software is compatible Windows 2000, XP, Vista and 7. It can be installed in any directory. It contains an executable (which must be authorised to dialogue on the network by the firewall) and a mandatory library file.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-9.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 110/139 9.4 Presentation 9.4.1 WHY AUTHENTICATED? The authentication of Etelm equipment is used to protect them from any unauthorised product copy. The referencing makes it possible to better control the distributed software especially with regards to quantities, versions, validity periods, sites... which brings special help for maintenance. To do this each appliance and software must be recognised and identified before operation becomes possible. 9.4.2 WHAT IS AUTHENTICATED? Authentication only applies to base stations. Only recent versions are concerned. 9.4.3 WHEN TO AUTHENTICATE? As explained above, authentication is needed for all new equipment, in order to renew a key or to carry out a major upgrade. 9.4.4 NEW EQUIPMENT Equipment can be delivered authenticated or not depending on the case. If an Etelm appliance has never operated and never been referenced it must be authenticated and unblocked in order to be fully and correctly operational. To do this the appliance must be installed in its environment and configured. Next the procedure should be launched using the authentication network management terminal using the correct settings. 9.4.5 VALIDITY PERIOD Etelm An installed Etelm appliance which is operational and referenced has an associated validity date key. When the date expires the equipment is blocked. The equipment must be re-authenticated in order to be used again. To do this, run the procedure as if new equipment were being installed after having contacted Etelm to extend the expiry date. 9.4.6 UPGRADE When an upgrade is available its installation invalidates the authentication. A procedure must therefore be launched from the authentication network management terminal in order to unblock the equipment again (after the upgrade).](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-10.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 111/139 Software authentication console Equipment TCP/IP or RS232 Technical Phoning Logiciel console d’authentification Equipment TCP/IP or RS232 Technical TCP/IP, WiFi, Web 9.5 How to authenticate? 9.5.1 AUTHENTICATION BY PHONE Architecture of phone authentication As can be seen here, the authentication will be carried out by a technician in the authentication centre or at the customer site who, in exchange for a first software number supplied by the equipment to be authenticated, will receive a new number depending on the unblocking authorisation managed by Etelm. Compared to Internet authentication the procedure is exactly the same except that the serial number is supplied orally and not via internet. This liberates from network and router issues. 9.5.2 INTERNET AUTHENTICATION Internet authentication architecture](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-11.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 112/139 As above, authentication is carried out by a technician from the authentication centre or the customer who will use another menu on the authentication network management terminal. It must be connected to Internet and the equipment at the same time. If this is not possible the new software key can be retrieved directly from the Internet and the equipment authenticated using the technique described in the previous paragraph. 9.6 Handling 9.6.1 GENERAL 9.6.1.1 Introduction The authentication network management terminal is used to authenticate via internet i.e. to reference and unblock equipment manufactured by Etelm. After having entered the parameters, either the network management terminal connects to the authentication centre and downloads a new key to replace the old one, or the new key is entered manually after having been exchanged for the old key by phone. The network management terminal then sends the key to the equipment via the network or the RS232 port (serial) depending on the user's choice. 9.6.1.2 Procedure When the network management terminal is launched the following window appears. A menu gives access to a few settings such as the language, help or the choice of the authentication technique. Clicking on the image either launches automatic authentication (the globe) or manual authentication (the telephone). Automatic or manual authentication choice menu Whatever the previous selection, the following window is displayed (except for what is outlined in red which only appears for automatic authentication):](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-12.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 113/139 Menu to select the communications protocol between the network management terminal and equipment. The media used to communicate with the new equipment must be selected. The choice is made by clicking on the image and validating using OK. Cancel returns to the previous menu. Next, depending on the automatic or manual authentication choice, a different window appears. The "no connection to the equipment" menu specific to automatic authentication is used to retrieve a new key via internet in exchange for the old key without necessarily being connected to the equipment. The procedure is divided into several steps. 9.7 Manual authentication (by phone) 9.7.1.1 Network connection to the equipment This software will therefore make it possible to authenticate equipment by phoning Etelm (or downloading a key via internet). First the parameters must be configured. To do this, enter the equipment IP address (which should belong to the same sub-network as the authentication network management terminal if using a switch or a router...) and the communications port.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-13.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 114/139 To finish click on the "connect" button and the network management terminal attempts to retrieve the key. A small window shows the status of events (connection, disconnection and error). The diagram shows a network management terminal and a BS connected by a cable. The cable is green when connected and red otherwise. In the following case the connection succeeded (in the window and the cable is green) and the old key is shown in the "previous key" field. Typically the authentication network management terminal waits for the new key in order to send it to the equipment. In the progress window (at the bottom) there are several items that can be very useful. The type of software that can be used to make sure there is no error, the version is used to know if the software is up to date and finally if the equipment is already authenticated. In the example below a TETRA version 2.0j switch has already been authenticated. Manual authentication menu using a network cable](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-14.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 115/139 In the following case the connection attempt has failed because the equipment has not responded at address 192.168.1.253: Connection failed Once the old software key has been obtained either: Communicate it (with the corresponding customer identifiers) by phone to the authentication centre (Etelm) which will supply a new key corresponding to the customer's remaining credit. Or send it via the automatic authentication menu without connecting to the equipment (with the supplied customer identifiers).](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-15.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 116/139 Enter the new key](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-16.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 117/139 Confirm success Once the new key is entered (red circle figure 8), validate, and the network management terminal automatically disconnects. To check its success just test the equipment functions, look at the programme return in the window (red circle figure 9) or check the 'ACT' LED on the equipment. The LED should flash slowly (frequency of 2 or 4 seconds).](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-17.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 118/139 9.7.2 SERIAL EQUIPMENT CONNECTION The use of a serial cable instead of a network cable does not change the procedure, it is strictly identical. Parameter configuration changes only. Manual authentication using a serial cable As a parameter there is the communication speed and port number to be defined. It is preferable to leave the default configuration. If the connection fails it is possible to try again using another communications port.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-18.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 119/139 9.8 Automatic authentication (via Internet) 9.8.1 NETWORK CONNECTION TO THE EQUIPMENT The software will make it possible to authenticate equipment automatically via internet. First the parameters must be configured. To do this enter the IP address on the authentication centre and the communications port (choose any one that your firewall authorises). If a router is used it must be configured to accept the TCP protocol on the appropriate port. Next the connection to the equipment should be configured. To do this, enter the equipment IP address (which should belong to the same sub-network as the authentication network management terminal if using a switch or a router...) and the communications port. To finish enter the login and password supplied with the equipment and click on the "OK" button. The network management terminal connects to the centre and retrieves a valid key (if the customer credit is sufficient) and sends it to the equipment. Automatic authentication using a network cable At the end of the operation the network management terminal disconnects from the centre and the equipment should be tested to see whether the authentication was successful. 9.8.2 MULTIPLE AUTHENTICATIONS (IP NETWORK) It is possible to authenticate several appliances one after the other automatically without changing the configuration each time. To do this all the equipment must be on the same IP network and the network management terminal must have internet access.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-19.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 120/139 To begin with, create a text file (for example right click on the desktop, new menu, text file) containing all the IP addresses of the equipment to be authenticated as follows: IP address entry The IP addresses must be entered correctly and separated by carriage returns. The file is saved and closed.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-20.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 121/139 Multiple authentications by IP network To authenticate several appliances connected to the same network, first check the "authenticate several appliances on the same network" box (surrounded in red, N°1), next click on the button showing a file in the window that has appeared (surrounded in red N° 2), select the text file containing the IP addresses (in red N°3) and finally click on the open button (in red N° 4). The addresses appear in the "IP addresses of equipment to authenticate" window as shown below. If an address is not shown, it is because it is not correct.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-21.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 122/139 IP address validation Validate click on the OK button. Finally, to launch the procedure, carry on as if authenticating a single appliance. The procedure is exactly the same. 9.8.3 SERIAL EQUIPMENT CONNECTION The use of a serial cable instead of a network cable does not change the procedure, it is strictly identical. The parameter configuration changes only.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-22.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 123/139 Automatic authentication using a serial cable As for manual authentication, here the communications speed is set and the same steps as above are carried out. Multiple authentications are not possible because it would need a serial cable connection to all the BSs at the same time.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-23.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 124/139 9.8.4 NO CONNECTION TO THE EQUIPMENT It is possible to authenticate equipment via Internet without being directly connected to them. In this case start by retrieving the old key using the method in the previous paragraph (see §4.2), send it via internet as explained below, then retrieve the new key and send it to the equipment using the previous method again. Automatic authentication without connecting to the equipment First enter the old key, enter the identifiers that were supplied and click on OK. The new key will appear. It must then be sent to the equipment. 9.8.5 DIAGNOSING AN AUTHENTICATION PROBLEM ON A NETIS-B Using the TETRA network management terminal you can see whether a BS is authenticated](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-24.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 125/139 In the monitoring you will see a red cross appear on the green background of the icon as shown below if the NeTIS-B has not been authenticated:](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-25.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 126/139 10. PABX GATEWAY 10.1 Introduction The TETRA IP Gateway for PBX (phone switchboard) is used to open up a classic phone installation to the TETRA IP radio world.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-26.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 127/139 This gateway is used to interconnect a phone link to any location of an ETELM IP TETRA network having the TETRA UDP phone and signalling from the different TETRA SWITCHES. This IP / PABX Gateway, in the case of a "full IP" TETRA network with several switches each having phone access, makes it possible to route phone calls from anywhere on the network to the TETRA SWITCH managing the network at time t, without using external inter PABX links. And on the opposite, for a radio call to a phone, the TETRA SWITCH routes the call to the IP Gateway corresponding to the phone call. Communications from phone sets connected to the PABX are sampled, converted to binary data using MIC decoding (modulation by impulse coding), then encapsulated in IP packets by the TETRA IP Gateway for PABX. On the other hand, radio calls are sent to the TETRA IP Gateway for PABX which routes them to the PABX and, when the connection is made transforms the TETRA UDP IP phone blocks onto the MIC blocks needed for the phone link. SWITCH A BB IP SWITCH B BB IP IP GATEWAY IP TETRA Link T2, T0, S0,](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-27.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 128/139 10.2 Equipment This TETRA_IP for PABX Gateway is composed of: A BS chassis to access the UPlane and CPlane bus managing phoning and TETRA signalling from the CPU board A 220V or 48V power supply board A CPU board (need to have an 8k equipment signal) A BDT board (Time base) A COM2 or COM3 board configured with the T2 software (Version 2.05/) or a COMS board for an S0 or T0 access 10.3 Led signification Led 5V led for the CPU board: On if 5V power supply is present on the CPU board Off if the 5V power supply is absent from the CPU board ACT led for the CPU board: Very fast flashing if the IP PABX gateway has not received a configuration from the Switch CPU board. Slow flashing (once per second) if the IP PABX Gateway is configured INT led for the CPU board: On if the 125 µs interruption is supplied by the BDT board to the CPU board Off if the 125 µs interruption is absent ACT/MCCH led for the CPU board: On if the IP PABX Gateway is connected to the switch (TCP connection) Off if the IP PABX Gateway is not connected to the switch Add COM and BDT boards](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-28.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 129/139 10.4 Configuration 10.4.1 CONFIGURATION TO THE IP PABX GATEWAY Parameter the Gateway IP address (by modifying the file /etc/interfaces) 10.4.2 CONFIGURATION OF THE SERVICE NETWORK MANAGEMENT TERMINAL Creation of phone appliance with the IP address of the appliance and its number as the link. In the dialling plan, indicate the PABX type for the number range corresponding to the gateway followed by the corresponding equipment number.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-29.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 130/139 11. MODULE DESCRIPTION 11.1 Power supply board:](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-30.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 131/139 11.2 CPU-BDT board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-31.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 132/139 11.3 CCT2 board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-32.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 133/139 11.4 COM board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-33.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 134/139 11.5 COM3 board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-34.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 135/139 11.6 DCTR board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-35.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 136/139 11.7 SUPIP board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-36.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 137/139 11.8 UCM board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-37.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 138/139 11.9 UCM2 board](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-38.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 139/139 11.10 Power amplifier (PA) This module amplifiers the RF signals sent by the CPU module in order to deliver 10 Watts RF. It is powered by +28 volts and can be checked on the front face of the UCM2. The PA alarms are present on the front face of the UCM2. The PA provides a set point for the regulation of its output power. The amplifier has an internal blocking mechanism if it does not receive the transmission command from the UCM. No measurements can be made if the BS is not in TETRA transmission. The module has an integrated circulator which protects it from accidental load disconnections and considerably minimises the risks of intermodulation with neighbouring transmitters.](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-39.png)
![NeTIS MAINTENANCE GUIDE – Version 1.1 140/140](https://usermanual.wiki/Electronique-Telematique-ETELM-Canada/BSTETRA451.netis-B-maintenance-guide-V1-1-part4/User-Guide-3010457-Page-40.png)