4-fold (quad) converter LB telephone / FXO (analog trunk)
- used for connection of LB telephones to PbX with FXS interface (analog subscriber)
- conversion of ringing to loop U signalling
call release:
- ring-back from LB
- voice activity detection
- busy tone detection
- detection of line voltage interruption form PbX
Other informations:
- settings of parameters by switches
- desktop or rack version
- power supply -42V to -65 V DC, 300 mA
product code:
ITX 422 22 Trunk MB/FXO
ITX 482 22 Trunk LB/FXO/6U
systems for voice data communication
