Nortel Networks Passport ARN Routers - Manual (Page 139)

ARN Technical Specifications
114200-E Rev 00 C-15
X.25 PAD Connections
The ARN provides X.25 PAD functions that enable the router to access X.25
services through the 8 ports of an attached breakout box. The PAD establishes and
maintains links with the packet switch network, assembles and disassembles
packets, communicates with the character terminal, and handles special control
processes for the character terminal.
You connect the X.25 ports using an RS-232-D serial connection as shown in
Table C-12 .
Table C-12. X.25 Breakout Box Interface Pin Assignments
Pin Assignment Pin No.
Signal
(Function)
Pin No.
Signal
(Function)
1 GND 13 Not Used
2 RxD 14 Not Used
3 TxD 15 Not Used
4 RTS 16 Not Used
5 CTS 17 Not Used
6 DSR 18 Not Used
7 GND 19 Not Used
8 DCD 20 DTR
9 Not Used 21 Not Used
10 Not Used 22 Not Used
11 Not Used 23 Not Used
12 Not Used 24 Not Used
25 Not Used
Pin 13
Pin 1
Pin 25 Pin 14
ARN0093A