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B-16
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Appendix
Trunk Cabling
Trunk Cabling
This section provides information about T3 and E3 trunk cabling.
T3 Trunk Cabling
A trunk cable connects each T3 port on the SMB-8T3 back card to a T3 port on the colocated MGX 8220
node. See Table B-16 for information about the T3 trunk cable wiring and connector.
See Table B-17 for details on SMB pin functions.
E3 Trunk Cabling
A trunk cable connects each E3 port on the SMB-8E3 back card to an E3 port on the colocated MGX
8220 node. See Table B-18 for information about the E3 trunk cable wiring and connector.
AXSM LC SMF
AXSM MTRJ MMF
AXSM SC MMF CAB-MMF-Y-SC
Table B-15 Y-Cable Product Numbers for MGX 8950 Cards (continued)
MGX 8950 Card
Connector
Hardware
Type/Standard
Interface Y Cable Product Number
Table B-16 T3 Trunk Cable and Connector Information
Cable Parameter Description
Type 75-ohm coaxial cable (RG-59 B/U for short runs; AT&T 734A for longer
runs). Two per T3 line (transmit and receive).
Maximum length 450 feet between the Cisco MGX 8850 or MGX 8950 switch and the DSX-3.
450 feet between the Cisco MGX 8830 switch and the other equipment.
Connector Terminated in male SMB. Rx is received from trunk; Tx is transmitted to
trunk.
Table B-17 T3 Connector Pin Functions
Connector Description
Rx SMB Receive T3 from trunk
Tx SMB Transmit T3 to trunk