Page 52 - Port Pinouts Technical Data
ISDN Port – PRI (RJ45)
Pin No. Description Signal Direction
1 Receive Data (Rx-A) Í
2 Receive Data (Rx-B) Í
4 Transmit Data (Tx-A) Î
Pin 1 Pin 8
5 Transmit Data (Tx-B) Î
LAN Port – 10/100 BaseT
For IP Office 403/406 the information below refers to LAN ports 1 – 7. Port 8 is switchable in software
(exchanges Tx and Rx signals).
For IP412 and WAN3, both ports have the Rx and Tx connections exchanged.
Pin No. Description Signal Direction
1 Receive Data (Rx-A) Í
2 Receive Data (Rx-B) Í
3 Transmit Data (Tx-A) Î
Pin 1 Pin 8
6 Transmit Data (Tx-B) Î
DTE Port (25 Way or 9 Way D-Type socket)
Pin 25
Pin 1
Pin 9
Pin 1
Pin No (25 Way). Pin No (9 Way). Description Signal Direction
2 3 Receive Data (Rx) Í
3 2 Transmit Data (Tx) Î
4 7 Request to Send (RTS) Í
5 8 Clear to Send (CTS) Î
6 6 Data Set Ready (DSR) Î
7 5 Signal Ground
8 1 Data Carrier Detect (DCD) Î
20 4 Data Terminal Ready (DTR) Í
22 9 Ring Indicator (RI) Î
Page 52 - Technical Data IP Office Installation Manual
Port Pinouts 40DHB0002USCL – Issue 7 (09/25/2002)