Instruction manual

ATLAS 800 Series System Manual Option Module Pinouts

Engineering Guidelines

Octal BRI ISDN (U-Interface) Option Module

Each port of the Octal BRI ISDN (U-Interface) Option Module (P/N 1200186L2) uses a single RJ-45 jack

to connect to a standard BRI U interface circuit (see Pinout 21).

Octal BRI ISDN (S/T Interface) Option Module

Each port of the Octal BRI ISDN (S/T Interface) Option Module uses a single RJ-45 jack to connect to a

standard BRI S/T interface circuit (see Pinout 22). The Octal BRI ISDN (S/T Interface) Option Module is

only available for use in NT mode (User Term) applications.

Pinout 21. Octal BRI (U-Interface) Module (RJ-45)

Pin Name Description

1, 2, 3, 6, 7, 8 Unused —

4 Ring Ring to and from the Network Interface

5 Tip Tip to and from the Network Interface

Pinout 22. Octal BRI (S/T Interface) Module (RJ-45)

Pin Name Description

1, 2, 7, 8 Unused —

3, 6 Receive Receive for User Term (NT Mode)

4, 5 Transmit Transmit for User Term (NT Mode)