Appendix C Cabling Specifications
Ethernet Port Pinouts
Auxiliary Port Cables and Pinouts
Use the RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 male DCE adapter (labeled MODEM) to connect the auxiliary port to a modem. Figure C-4shows how to connect the auxiliary port to a modem. Table C-3lists the pinouts for the asynchronous serial auxiliary port, the RJ-45-to-RJ-45 rollover cable, and the RJ-45-to-DB-25 male DCE adapter (labeled MODEM).
Figure C-4 Connecting the Auxiliary Port to a Modem
| RJ-45-to-RJ-45 |   |   |   | Modem | 
| rollover cable |   |   |   | 
|   |   |   |   | 
| Universal gateway | RJ-45-to-DB-25 adapter | 
|   | (labeled MODEM) | 
| Table C-3 | Auxiliary Port Signaling and Cabling Using a DB-25 Adapter |   | 
|   |   |   |   |   |   | 
|   |   |   |   | RJ-45-to-DB-25 |   | 
| AUX Port (DTE) |   | RJ-45-to-RJ-45 Rollover Cable | Modem Adapter | Modem | 
|   |   |   |   |   |   | 
| Signal |   | RJ-45 Pin | RJ-45 Pin | DB-25 Pin | Signal | 
|   |   |   |   |   |   | 
| RTS |   | 1 | 8 | 4 | RTS | 
|   |   |   |   |   |   | 
| DTR |   | 2 | 7 | 20 | DTR | 
|   |   |   |   |   |   | 
| TxD |   | 3 | 6 | 3 | TxD | 
|   |   |   |   |   |   | 
| GND |   | 4 | 5 | 7 | GND | 
|   |   |   |   |   |   | 
| GND |   | 5 | 4 | 7 | GND | 
|   |   |   |   |   |   | 
| RxD |   | 6 | 3 | 2 | RxD | 
|   |   |   |   |   |   | 
| DSR |   | 7 | 2 | 8 | DCD | 
|   |   |   |   |   |   | 
| CTS |   | 8 | 1 | 5 | CTS | 
|   |   |   |   |   |   | 
Ethernet Port Pinouts
Table C-4lists the pinouts for the Ethernet ports.
Caution To comply with the intra-building lightning surge requirements of GR-1089-CORE, Issue III, October 2002, you must use a shielded cable when connecting to either of the Cisco AS5350XM universal gateway Ethernet ports. The cable must consist of shielded cable terminated by shielded connectors on both ends, with the cable shield material tied to both connectors.
Table C-4 10/100BASE-T Port Pinouts
Cisco AS5350XM Universal Gateway Chassis Installation Guide