# Dialogic® MD1 RJ-45 interface

A Dialogic® MD1 RJ-45 interface uses the same connector as an RJ-48C but it has supplemental connections. An RJ-48C interface is commonly used for T1 lines and uses pins 1, 2, 4, and 5. A Dialogic® MD1 RJ-45 interface uses all eight pins.

## Pin assignments

The Dialogic® MD1 RJ-45 interface uses the following pin assignments:

Pin | Description | Trunk
1 | Receive from network (ring) | 1
2 | Receive from network (tip) | 1
3 | Transmit to network (tip) | 2
4 | Transmit to network (ring) | 1
5 | Transmit to network (tip) | 1
6 | Transmit to network (ring) | 2
7 | Receive from network (tip) | 2
8 | Receive from network (ring) | 2