Dsu Data Connections (J1 Through J10); Table 2-3. Dsu Data Connections (J1 Through J10) - Comtech EF Data SMS-7000 Installation And Operation Manual

Installation
2.6

DSU Data Connections (J1 through J10)

There are 10 data cables between the modem face of the DSU and 10 possible modems
associated with the switch. Each of the eight prime modems has an associated data cable
connector, CH1 through CH8 (J1 through J8). The two backup modems are connected
with data cables to BU1 and BU2 (J9 and J10). The cable terminations are 50-pin male D
connectors. The signal/pin assignments, as they occur for each data configuration, are
listed in Table 2-3.
Pin # IBS
1 GND
2 GND
3 AGC-OUT
4 TXD-B
5 TXD-A
6 RXD-B
7 RXD-A
8 RS422RXO-A
9 RS422RXO-B
10 PRI-COM
11 SEC-COM
12 SCTE/TT-A
13 SCTE/TT-B
14 RS422TXO-A
15 RS422TXO-B
16
17
18 G703_SDB
19 EXC-B
20 G703_RDB
21 SCT/ST-A
22 SCT/ST-B
2–20

Table 2-3. DSU Data Connections (J1 through J10)

Signal Name
Overhead Type
IDR
GND
GND
AGC-OUT
8K-TXO-A
8K-TXO-B
8K-RXO-A
8K-RXO-B
BWO1-C
BWO2-C
BWO3-C
BWO4-C
BWI-1
BWI-2
BWI-3
BWI-4
DF-COM
DMA
SD-B
EXC-B
RD-B
8K-TXC-A
8K-TXC-B
SMS-7000 Modem Protection Switch
SDM-100 and No Overhead
D&I EIA-422
GND GND
GND
AGC-OUT
TT-A
TT-B
DDI-B
EXC_B EXC-B
IDO-B
ST-A
ST-B
V.35 EIA-232
GND GND
SCTE-A TT
SCTE-B
EXC-B
SCT A ST
SCT B
Rev. 3