Specifications

Installation and Operation Manual Appendix A Connection Data
ASMi-52 Ver. 2.8 SHDSL Interface 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 for
E1/T1 connections. If 8-wire cable is used, verify that pin #7 is connected in the
equipment side.
For unbalanced E1, 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 –
A.2 SHDSL Interface
The 4-wire SHDSL line interface of the ASMi-52 modem terminates in a RJ-45
connector wired in accordance with
Table A-4 . The 2-wire interface has only
Line A.
Table A-4. 4-Wire SHDSL Interface Pinout
Pin Function
1 Line B
2 Line B
4 Line A
Note