1. Single FXS SIP Gateway. Single RJ11, Single RJ45
2. Support 2 line, 2 User
3. Call Waiting, Transfer, Call Forwarding: No Answer / Busy / All
4. Caller ID with Name / Number, Caller ID Blocking
5. Call Return, Call Back on Busy, Call Blocking with Toll Restriction
6. Message Waiting Indication - Visual and Tone Based
7. Delayed Disconnect, Selective / Anonymous Call Rejection
8. Hot Line and Warm Line Calling