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These are the E&M Cable Pinouts used to connect a Cisco 1700/2600/3600/3700 E&M Voice Interface Card (VIC) to a Nortel PBX Option 11 E&M Trunk.
There are no specific requirements for this document.
This document is not restricted to specific software and hardware versions.
For more information on document conventions, refer to the Cisco Technical Tips Conventions.
The Nortel PBX 25 pair wire Amphenol Cable must be punched down with the standard Nortel PBX E&M punch down scheme as seen in this list in order for the E&M Cable Pinouts to work.
Wires: 5 pairs to a group:
White-blue, white-orange, white-green, white-brown, white-slate(grey)
Red-b, R-O, R-G, R-B, R-S
Black-b, B-O, B-G, B-B, B-S
Yellow-b, Y-O, Y-G, Y-B, Y-S
Violet-b, V-O, V-G, V-B, V-S
Type 1; 2-wires; router to PBX -----NorTel----- Router Pins PBX 1 -- 7 M 2 -- 6 M 3 -- R1 4 -- 4 TA T1 5 -- 5 TB 6 -- E 7 -- 3 E 8 -- Type 1; 4-wires; router to PBX -----NorTel----- Router Pins PBX 1 -- M 2 -- 6 M R 3 -- 4 TA R1 4 -- 1 RA T1 5 -- 2 RB T 6 -- 5 TB E 7 -- 3 E 8 -- Type 2; 4-wires; router to PBX -----NorTel----- Router Pins PBX SB 1 -- 7 SB M 2 -- 8 M R 3 -- 4 TA R1 4 -- 1 RA T1 5 -- 2 RB T 6 -- 5 TB E 7 -- 3 E SG 8 -- 6 SG
The E&M voice interface card uses an RJ48S connector. The pinout depends on the PBX type and connection. This figure shows the wiring pattern for this connector, and the lists typical configurations.
Note: Pins that are not used should not be connected.
|Two-Wire Operation, Type||Four-Wire Operation, Type|
|1||SB||-48V signaling battery||–||SB||SB||–||–||SB||SB||–|
|3||R||Ring, audio input||–||–||–||–||R||R||R||R|
|4||R or R1||Ring, audio input/output or output||R||R||R||R||R1||R1||R1||R1|
|5||T or T1||Tip, audio input/output or output||T||T||T||T||T1||T1||T1||T1|
|6||T||Tip, audio input||–||–||–||–||T||T||T||T|
|8||SG||Signaling ground return||–||SG||SG||–||–||SG||SG||–|
Note: The Nortel Option11C PBX E&M Type I signaling matches the Cisco 3640 (or any other Cisco IOS gateway) Type V signaling. For more information about the Nortel PBX and Cisco Gateway Configuration, refer to Cisco 3640 Series Gateway-PBX Interoperability: Nortel Meridian 1 Option 11C PBX with Analog E&M Signaling.