I want to create a gateway adapter.
1. Able to receive and make Skype call.
2. Multiple Channels support. Able to connect to any IP Telephoney Service Provider ([url removed, login to view] etc.).
3. Call Forwarding support.
4. Call waiting support.
5. Support multiple SIP number.
6. Three way Conference call with local mixing, skype.
7. Music on Hold.
8. Speed Dial (Phone Book).
9. Call block.
10. Last Number Redial.
11. Distinctive Ringing.
12. Call History.
13. Send an Emergency call to PSTN.
14. Able to make and receive PSTN call.
15. PSTN relay when device power down or VoIP service is not available.
16. Gateway connects to the router or to the modem directly.