2008TG Wireless PBX Specification:
1.  It used the 4-way PBX switch for extension.
2.  It control the outgoing talking time for extension.
3.  It can show the caller ID of the extension and incoming call.
4.  Account Roaming for extension user.
5.  Voice Recorder Message system.
6.  Out line dialing out line[international call].
7.  5 user level for local users[international call, local call, National call, cellular call, internal call]
8.  Different ring tone from out line or internal line.
9.  Waiting for answer.