Bay Networks 8000 RAC, Installing Manual, Page: 127 / 148

A-7
Appendix A Port Pins and Signals
Installing the Model 8000 Remote Access Concentrator
Table A-5. Sync Port Pin/Signal Allocations (continued)
(continued on next page)
Pin Signal Description
8
22 DTR+
DTR- non-V.35 Data Terminal Ready
9
23 DCD+
DCD- non-V.35 Data Carrier Detect
10
24 ST+
ST- non-V.35 Send Timing
11
25 RT+
RT- non-V.35 Receive Timing
12
26 TT+
TT- non-V.35 Terminal Timing
13
28
30 RTIN#
RTIN#B
ST# Buffered Receive Timing from transceiver
Receive Timing to SCC
Buffered Send Timing from transceiver
14
29
15 CABLE
non_X.21
X.21_cab Cable type - normally 1 (X.21=1, others =0)
non-X.21 cable (active low)
X.21 cable present signal (n/c)
21 Unused Unused
27 Unused Unused
31
32 VST-
VST+ V.35 Send Timing
33
34 VRT-
VRT+ V.35 Receive Timing
35
37 VRD-
VRD+ V.35 Receive Data
36
38 VSD-
VSD+ V.35 Send Data
39
40 VTT-
VTT+ V.35 Terminal Timing