Nortel Networks 311 - page 399

Engineering guidelines 399
Pin Signal name EIA circuit CCITT circuit DTE DCE
2Transmit Data (TX) BA 103 X
3Receive Data (RX) BB 104 X
4Request to Send (RTS) CA 105 X
5Clear to Send (CTS) CB 106 X
6Data Set Ready (DSR) CC 107 X
7Signal Ground (SG) AB 102 ——
8Carrier Detect (CD) CF 109 X
15 Serial Clock Transmit (SCT) DB 114 X
17 Serial Clock Receive (SCR) DD 115 X
18 Local Loopback (LL) LL 141 X
20 Data Terminal Ready (DTR) CD 108.2 X
21 Remote Loopback (RL) RL 140 X
23 Data Rate Selector (DRS) CH/CI 111/112 X
24 External Transmit Clock (ETC) DA 113 X
25 Test Mode (TM) TM 142 X
Table173 "RS-422 interface pin assignments" (page 399) lists RS-422
interface specifications for EIA circuits. It shows the connector pin number,
the associated signal name, and the supported circuit type. It also indicates
whether the signal originates at the DTE or DCE device.
Table173
RS-422 interface pin assignments
Pin Signal Name EIA Circuit DTE DCE
1Frame Ground (FG) AA ——
2Transmit Data (TXa) BAa X
3Receive Data (RXa) BBa X
4Request to Send (RTS) CA X
5Clear to Send (CTS) CB X
7Signal Ground (SG) AB ——
8Receive Ready (RR) CF X
12 Receive Signal Timing (RST) DDb X
13 Transmit Data (TXb) BAb X
14 Transmit Signal Timing (TSTb) DBb X
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.