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Installation and Operation Manual Appendix A Interface Connector Specifications
ASMi-52 Ver. 2.5 DTE Interface Connectors A-3
E1 and T1 Interface Connector
The balanced E1 and T1 interfaces terminate in RJ-45 connector. Table A-2 lists
the balanced connector pin assignment.
Table A-2. E1/T1 Connector Pinout
Pin Function
1, 2 Transmit (output)
4, 5 Receive (input)
7 CPU ID for unbalanced interface detection
8 Earth GND
It is recommended to use 4-wire cables (pin numbers 1, 2, 4, and 5) only forE1/T1
connections. If 8-wire cable is used, verify that pin #7 is connected in the
equipment side.
For E1 unbalance, use the cable adaptor CBL-RJ545/2BNC/E1.
Ethernet Connector
Table A-3. Ethernet Connector Pinout
Pin Function
1 Tx+
2 Tx–
3 Rx+
4, 5 –
6 Rx–
7, 8 –
Note