Citel 3000 Guia Do Utilizador
EXTender 3000 System Administrator’s Guide (Definity)
Data Communications
Page 63
For a complete description of configuring the COM port of the Office Module, see “Configuring the COM
Port“ on page 30.
Port“ on page 30.
Table 9: RS-232 DB9 COM Port Pinout
Pin Number
Description at Remote and Office Module
Pin 1
DCD – Data Carrier Detect
Pin 2
Tx – Transmit data out
Pin 3
Rx – Receive data in
Pin 4
DTR – Data Terminal Ready
Pin 5
Signal Ground
Pin 6
DSR – Data Set Ready
Pin 7
RTS – Request To Send
Pin 8
CTS – Clear to Send