When digital phone extensions are required in another building, additional In-Range Out-Of-Building (IROB) protective equipment must be used. For phones connected to IP Office DS ports, the supported device supplied by ITWLinx is a towerMAX DS/2 module. This IROB device was previous badged by Avaya as the 146E IROB.
The protection device should be installed as per the instructions supplied with the device. The ground points on the IP Office control unit and any external expansion modules must be connected to a protective ground using 18AWG wire with a green and yellow sleeve.
Typically the IROBs 2 RJ45 EQUIPMENT ports are straight through connected to the 2 RJ45 LINE ports. This allows existing RJ45 structured cabling, using pins 4 and 5, to be used without rewiring for up to two DS connection. However, each of these ports can be used to connect a second extension using pins 3 and 6.
LINE |
Signal |
EQUIPMENT |
|||
|
1 |
Not used. |
|
1 |
|
2 |
Not used. |
2 |
|||
3 |
Ring II (Optional) |
3 |
|||
4 |
Ring I |
4 |
|||
5 |
Tip I |
5 |
|||
6 |
Tip II (Optional) |
6 |
|||
7 |
Not used. |
7 |
|||
8 |
Not used. |
8 |
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