Avaya IP Office Phone Manager, Installation Manual, Page: 172 / 411

IP Office Installation Page 171
15-601042 Issue 20b (16 July 2009) IP Office
Additional Processes: Out of Building Telephone Installations
9.4.1 DS Phones
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.
•
CAUTION
Ports on the front of the Small Office Edition, IP403 and IP406 V2 control units must not be used for extensions that
are external to the main building.
The protection device should be installed as per the instructions supplied with the device. The ground points on the IP
Office control unit and the DS modules must be connected to a protective ground using 18AWG wire with a green and
yellow sleeve.
Typically the IROB's 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