Digital Voice Port Pinout (RJ-48C)
http://www.cisco.com/en/US/services/ps2827/ps2978/services_at_a_glance_smartnet.pdf
| Pin | Signal | |
|---|---|---|
| 1 | Receive (Rx) Tip |  |
| 2 | Rx Ring | |
| 3 | Not used | |
| 4 | Transmit (Tx) Tip | |
| 5 | Tx Ring | |
| 6 | Not used | |
| 7 | Not used | |
| 8 | Not used |
Ethernet patch port
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