Modem Cable; External Clock Input Cabling; Figure A-4 Null Modem Cable - Cisco MGX 8220 Installation And Configuration Manual

Control and Clock Cabling
Table A-14 Maintenance and Control Port Pin Assignments (continued)
Pin No.
6
7
8
1
18
20
1
21
1
22
1. Used on control port cable only.

Modem Cable

Figure A-4 shows a modem cable that is used for connecting modems to the MGX 8220 control and
maintenance ports.
Figure A-4
1
7
2
3
6
20

External Clock Input Cabling

The external clock input cable connects the external clock inputs through the T3/E3-D, T3/E3-B, and
SMF-155 EXT. TMG. connectors. The clock is 1.544 Mbps for T3/E3-D or 2.048 Mbps for T3/E3-D.
(See Table A-15 through Table A-18.)
Cisco MGX 8220 Installation and Configuration
A-8
Name Source
DSR DCE
SG Both
CD DCE
LL DTE
DTR DTE
RL DTE
RI DCE
Null Modem Cable
Description
Data set ready
Signal ground
Carrier detect
Local loop
Data term ready
Remote loop
Ring indicator
1
7
2
3
6
20
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix A Cabling Summary