ATLAS 550 System Manual Section 2, Engineering Guidelines
61200305L1-1F © 2002 ADTRAN, Inc. 45
Legacy Data Option Module (P/N 1200342L1)

The Legacy Data Option Module provides four EIA-232 or V.35 interfaces (or any combination up to four)

for sync or async packet data applications. Table 31 gives the pinouts for both the EIA-232 and V.35

connections.

22 47 O V.35 RD - Receive Data
23 O V.35 CTS - Clear to Send
48 I V.35 Ground/Present
24 49 O TM - Test Mode
25 50 SG - Signal Ground
Table 30. T1 Network Connection 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 Types EIA-232 and V.35
Table 31. EIA-232 and V.35 Connection Pinouts
EIA-232 PIN V.35 PIN CCITT/V.24 PIN DESCRIPTION
- A 101 Protective ground (PG)
7 B 102 Signal ground (SG)
4 C 105 Request to send (RTS) from DTE
5 D 106 Clear to send (CTS) to DTE
6 E 107 Data set ready (DSR) to DTE
8 F 109 Rec eived line signal detector (DCD) to
DTE
20 H 108/2 Data terminal ready (DTR) from DTE
Table 29. HSSI/V.35 Connection Pinout (Continued)