Section 2, Engineering Guidelines ATLAS 550 System Manual
42 © 2002 ADTRAN, Inc. 61200305L1-1F
Dual/Quad T1/PRI Option Module (P/N 1200314L1/1200755L1)
Each port of the Dual/Quad T1/PRI Option Module uses a single, 8-position modular jack to connect to the
T1 or PRI circuit. Table 25 gives the pinout for this jack.
Quad BRI (U-Interface) Option Module (P/N 1200315L1)
Each port of the Quad BRI (U-Interface) Option Module uses a single RJ-48C jack to connect to a standard
BRI U-interface circuit. Table 26 shows the network pinout connection.
Table 24. Trunk Circuit Connections for Various E&M Signaling Types
Signaling Type
Trunk Circuit Connections
E M SB SG
Type I Pin 3 Pin 6 NC NC
Type II Pin 3 Pin 6 Pin 4 Pin 5
Type III Pin 3 Pin 6 Pin 4 Pin 5
Type IV Pin 3 Pin 6 Pin 4 Use Frame Ground
Type V Pin 3 Pin 6 NC NC
Connector Type (USOC) RJ-48C
Table 25. T1/PRI Pinout
PIN NAME DESCRIPTION
1 R1 RXDATA-RING Receive data from the network
2 T1 RXDATA-TIP Receive data from the network
3 — UNUSED —
4 R TXDATA-RING Send data towards the network
5 T TXDATA-TIP Send data towards the network
6,7,8 — UNUSED —
Connector Type
(USOC) RJ-48C
Table 26. BRI Pinout (U-Interface)
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
