
Installing and Operating the Passport 5430 Multiservice Access Switch
A-12
306308-A Rev 00
Dual Synchronous Interfaces
The dual synchronous PMC interface provides data terminal circuit emulation
service over the WAN. The dual synchronous interface supports two full-duplex
synchronous serial ports. You can connect one 44-pin cable to each dual
synchronous PMC module.
You can use the following cables:
•
V.35 (Order No. 7220)
•
X.21 (Order No. 7224)
Figure A-1.
Dual Synchronous PMC Module Interface Pin Assignments
shows the signal and pin assignments for the Port 1 connectors.
Table A-11.
Dual Synchronous PMC Module Interface Pin Assignments for Port 1
Pin No. 44
44-X.21
44-V.35
44-V.28
50
Signal
68-pin Dsync
1
1
1 FGND
A
1 FGND
1
FGND
1 FGND
2 FGND
33 FGND
34 FGND
9
19
B
30
CTS-
12 CTS1-
8
5
D
5 CTS
5
CTS+
11 CTS1+
17
23
12 INDB
34
DCD-
14 DCD1-
16
9
5 INDA
F
8 DCD
9
DCD+
13 DCD1+
11
20
31
DSR-
10 DSR1-
10
6
E 6
DSR
6
DSR+
9
DSR1+
(continued)
FBR0107A
Pin 1
Pin 34
Pin 35
Pin 68