Dual Ussi Option Module (P/N 1200754L1), Db-78; Table 15. Db-78 Connector Pinout - ADTRAN Atlas 550 System Manual

Section 2 Engineering Guidelines

Dual USSI Option Module (P/N 1200754L1), DB-78

Tables 15 through 20 show pinouts for the available interfaces of the Dual USSI Option Module and the
system part numbers required for ordering.
Pin
1
2
3
4
5
6
7
8
9
10
11—17
18
19
20
21
22
23
24
25
26
27
28
29—37
38
39
40
41
Note: A signal description followed by a 1 or a 2 indicates the port on the USSI
Module.
38

Table 15. DB-78 Connector Pinout

Signal Description
RXD-A 2
RXD-B 2
RXC-A 2
RXC-B 2
TXD-A 2
TXD-B 2
TXC-A 2
TXC-B 2
EXT-TXC-A 2
EXT-TXC-B 2
UNUSED
GND
GND
CHASIS GND
CTS-A 2
CST-B 2
DSR-A 2
DSR-B/RI 2
DCD-A 2
DCD-B 2
DTR-A 2
DTR-B 2
UNUSED
RTS-A 1
RTS-B 1
RTS-A 2
RTS-B 2
© 2004 ADTRAN, Inc.
ATLAS 550 System Manual
Pin
Signal Description
42 GND
43—48 UNUSED
49 MOD2
50 MOD0
51 EXT-TXC-A 1
52 DTR-B 1
53 DTR-A 1
54 DCD-B 1
55 DCD-A 1
56 DSR-B/RI 1
57 DSR-A 1
58 CTS-B 1
59 CTS-A 1
60 CHASIS GND
61 GND
62—68 UNUSED
69 MOD1
70 EXT-TXC-B 1
71 TXC-B 1
72 TXC-A 1
73 TXD-B 1
74 TXD-A 1
75 RXC-B 1
76 RXC-A 1
77 RXD-B 1
78 RXD-A 1
61200305L2-1B