Specifications

A-5
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix A Cabling Summary
Frame Relay Cabling
Cabling for RJ-48 Connectors on T1 and E1 Ports
For back cards using RJ-48 connectors on T1 and E1 ports, each connector has
• Transmit tip pin
• Transmit ring pin
• Receive tip pin
• Receive ring pin
• Two pins for shielded ground
The pins are wired as shown in Figure A-2.
Table A-10 Pinouts for SCSI-II Connector
Pin No. Name Signal Function Polarity Signal Source
11 SD Send data + DTE
36 -
4 RD Receive data + DCE
29 -
6 ST Send timing +
31 -
2 RT Receive timing +
27 _
9TTTerminal timing+DCE
13 -
3CADCE available+DCE
28 -
8 TA DTE available + DTE
33 -
10 LA Loop ckt A + DTE
35 -
12 LB Loop ckt B + DTE
37 -
5 LC Loop ckt C + DCE
30 -
1,26,7,32,
13,38,19,
44,25,50
SG Signal ground