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Chapter 2. Installation
61200771L1-1 NxT1 HSSI/V.35 User Manual 25
WIRING
Each module T1 port uses a single RJ-48C jack to connect to a T1 circuit.
Table 2-1 shows the T1 pinout connection. The required wiring connection
follows:
The HSSI/V.35 interface uses a single SCSI-II 50 pin connector with an op-
tional V.35 adapter cable. Table 2-2 shows the SCSI-II connector pinout.
Connector Type
(USOC) RJ-48C
Table 2-1. T1 Pinout Connection
PIN NAME DESCRIPTION
1 R1 RXDATA Receive data from the network ring
2 T1 RXDATA Receive data from the network tip
3, 6, 7, 8 Unused n/ a
4 R TXDATA Send data towards the network ring
5 T TXDATA Send data towards the network tip
Connector Type
50 pin SCSI-II Female
Table 2-2. HSSI/V.35 (SCSI-50) Pinout
PIN (+ side) PIN (- side) DIRECTION DESCRIPTION
1 26 — HSSI SG - Signal Ground
2 27 O HSSI RT - Receive Timing
3 28 O HSSI CA - DCE Available
4 29 O HSSI RD - Receive Data
5 30 O HSSI LC - Loopback Circuit C
6 31 O HSSI ST - Send Timing
7 32 — HSSI SG - Signal Ground
8 33 I HSSI TA - DTE Available
9 34 I HSSI TT - Terminal Timing
10 35 I HSSI LA - Loopback Circuit A
11 36 I HSSI SD - Send Data
12 37 I HSSI LB - Loopback Circuit B
13 38 — HSSI SG - Signal Ground