Technical Data Cables - Page 65
Telephone Converter Cables
The following diagrams show the pin-outs of various Structured Cabling Telephone Converters. The
first two telephone converters shown provide the required conversion allowing correct operation of
the attached telephone.
Each telephone port on the Phone modules acts as a Master socket, thus only Slave Telephone
Converters are required.

RJ45 - Compatible Converter

Telephone

Converter Cable
Structured Wiri ng/
Unity Phone
BT New Plan
Socket
RJ11
Plug
RJ45
socket
Latch
1
7
6 Bell
5 B
4 A (Bell return)
3
2
2
3
4
5
6
7
6
5
4
3
2
1

RJ11/45 Adapter

RJ45 or RJ11 plug BT Newplan Sock
e
RJ11 Pin Number RJ45 Pin Number BT Newplan Socket Pin Number
3 4 3
4 5 4
Other connections are not relevant.
BT Newplan socket connections may be reversed as polarity is not important.
This adapter may be used with DT telephones fitted with BT Newplan plugs.
Out of Building Installation
In the USA only, installation of telephone and/or other standard (tip/ring) devices in another building
requires the following:
• In-Range-Out-Of-Building (IROB) protectors, to protect the control unit and device from electrical
surges, must be fitted as follows:
- System telephone : two IROB protectors
- Standard telephone : two IROB protectors plus one carbon block protector.
Install the IROBs as per the instructions supplied with the IROB. Three versions are available as
follows :
- 146C - Trunks - SAP code 407228923
- 146D - Two-wire - SAP code 407568146
- 146E - TDL - SAP code 407568161
• Installation of a Contact Closure Adjunct controlled device outside the building requires a 146G
Surge Protector – SCL/8 to protect the control unit from electrical surges.
Installation Manual Technical Data - Page 65
IP Office 40DHB0002USCL – Issue 7 (09/25/2002)