Features:
1) Charges only after getting through
2) Can't be used on ISDN line
3) Used as enterprise or institution unit telephones, group telephones,
public telephones, hotel telephones and in telephone supermarket
where reverse charge should be provided
4) No need to dial card numbers and password and gets through
instantly after direct dialing
5) Mute synchronization preemptive dialing technology makes users
getting through within shortest time
6) Automatic switch and can automatically choose corresponding IP card
according to the opening region
7) Low power consumption and no need to connect outside power
supplies
8) Compatible with various telephone cards