3com 500 Manual De Usuario

 

 

 

 

AccessBuilder 500 Rear Panel Features

 

 

 This port is used to connect an optional public switched telephone 

 

network (PSTN) telephone handset, or any other compatible analog 

 

equipment, operating in digital tone multiple frequency (DTMF) mode, 

 

by connecting the handset’s plug into this port. 

 

This port is in effect an analog to digital convertor which allows you to 

 

use your conventional PSTN telephone on an ISDN line. It is capable of 

 

supporting ringing current and call progress tones, and supports 

 

analog devices to a maximum ringer equivalence number (REN) of one 

 

(United Kingdom). Providing one of the two ISDN B channels is not 

 

being used by the unit, then a voice call can be made.

 

Incoming ISDN traffic carries both a voice and data identifier and 

 

depending on the type of transmission, a voice call is automatically 

 

directed to the appropriate port connected to the telephone handset.