Instruction manual

61200780L1-1C © 2004 ADTRAN, Inc. 39
ATLAS 800 Series System Manual Option Module Pinouts
Engineering Guidelines
10 EXT-TXC-A 2/4 56 DSR-B/RI 1/3
11-17 Not used 57 DSR-A 1/3
18 GND 58 CTS-B 1/3
19 GND 59 CTS-A 1/3
20 CHASIS GND 60 CHASIS GND
21 CTS-A 2/4 61 GND
22 CST-B 2/4 62-68 Not used
23 DSR-A 2/4 69 MOD1
24 DSSR-B/RI 2/4 70 EXT-TXC-B 1/3
25 DCD-A 2/4 71 TXC-B 1/3
26 DCD-B 2/4 72 TXC-A 1/3
27 DTR-A 2/4 73 TXD-B 1/3
28 DTR-B 2/4 74 TXD-A 1/3
29-37 Not used 75 RXC-B 1/3
38 RTS-A 1/3 76 RXC-A 1/3
39 RTS-B 1/3 77 RXD-B 1/3
40 RTS-A 2/4 78 RXD-A 1/3
41 RTS-B 2/4
1
1/3 or 2/4 indicates the port on the Nx 56/64 Module
Pinout 15. Quad Nx 56/64 Module (DB-78) (Continued)
Pin Signal Pin Signal