APPENDIX A
Interface Specifications
A.1 E1 Balanced Port connector
The E1 balanced port interface is terminated in an eight-pin RJ-48C
connector, designated E1 LINK, and wired in accordance with
Table A-1
Table A-1. E1 LINK Connector, Pin Allocation
Pin Function
1
Transmit Data Out (tip)
2
Transmit Data Out (ring)
3 Not
Connected
4
Receive Data In (tip)
5
Receive Data In (ring)
6 Not
Connected
7,8 Not
Connected
A.2 Data Port Connector
The data port interface is terminated in a 50-pin SCSI-type female
connector, wired in accordance with
Table A-2
.
Table A-2. Data Port connector Wiring
Pin Designation
Direction
Function
1 FGND
-
Frame
ground
2
RxD (B)
OUT
RX data – B wire
3
RxD (A)
OUT
RX data – A wire
4 N
/
A
-
Not
Connected
5 N
/
A
-
Not
Connected
6
RxC (B)
OUT
RX CLK – B wire
7
RxC (A)
OUT
RX CLK – A wire
8
DCE_DCD (B)
IN
Carrier detect from DCE – B wire
9 DCE_DCD
(A) IN Carrier
detect from DCE – A wire
10
TxC (B)
OUT
TX CLK – B wire
A-1