Bay Networks 8000 RAC Installing Manual page 127

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