Installation guide

62 DC 900-1537B
Freeway 1200/1300 Hardware Installation Guide
DTE Ready (DTR) DTE CD 20 CD (A) 20 TR (A) 12 108 H
CD (B) 23 TR (B) 30
Signal Ground – AB 7 AB 7 SG 19 102 B
Receive Line Signal
Detect (DCD)
DCE CF 8 CF (A) 8 RR (A) 13 109 F
CF (B) 10 RR (B) 31
Transmit Signal
Element Timing
DCE DB 15 DB (A) 15 ST (A) 5 114 Y
DB (B) 12 ST (B) 23 114 AA
Receive Signal
Element Timing
DCE DD 17 DD (A) 17 RT (A) 8 115 V
DD (B) 9 RT (B) 26 115 X
Local Loopback DTE LL 18 LL 18 LL 10 141 L
Remote Loopback DTE RL 21 RL 21 RL 14 140 N
Ring Indicator DCE CD 22 ––––125J
Transmit Signal
Element Timing
DTE DA 24 DA (A) 24 TT (A) 17 113 U
DA (B) 11 TT (B) 35 113 W
Test Mode DCE RM 25 TM 25 TM 18 142 NN
Table A–1: Commonly Used Electrical Interfaces (Cont’d)
Signal Name Source
EIA-232 EIA-530 EIA-449 V.35
Mnemonic Pin Mnemonic Pin Mnemonic Pin Mnemonic Pin