3Com SuperStack II manual Serial Connectors Flex-WAN Cables, RJ-48S male shielded Name Abbr

174APPENDIX D: CONNECTORS AND CABLES

RJ-48 T1 Cable To connect a model 46x or model 56x bridge/router to a T1 or fractional T1 line, use a cable with an RJ-48 connector. 3Com does not supply this cable.

Figure 27 shows the pin assignments of the cable with both ends terminated in RJ-48 connectors.

Figure 28 RJ-48 T1 Cable

To WAN port

1 2 3 4 5 6 7 8

RJ-48S male (shielded)

To wall outlet

1 2 3 4 5 6 7 8

RJ-48S male (shielded)

Name Abbr.

Receive ring from network	R1
Receive tip from network	T1
Not connected	NC
Transmit ring to network	R
Transmit tip to network	T
Not connected	NC
Not connected	NC
Not connected	NC

Pin

1

2

3

4

5

6

7

8

Pin Abbr. Name

1R1 Receive ring from network

2T1 Receive tip from network

3 NC Not connected

4R Transmit ring to network

5T Transmit tip to network

6	NC	Not connected
7	NC	Not connected
8	NC	Not connected

Serial Connectors

and Flex-WAN

Cables

The serial connectors on the bridge/router can be connected to DTE and DCE devices with the following interfaces:

■RS-232

■V.35

■X.21

■RS-449

■RS-530 (DCE only)