TekPhone

TekPhone is a SIP (Session Initiation Protocol) VoIP Softphone that provides UA agent functions (Based on RFC 3261) runs under Windows (XP, Vista, 2003 Server).

Main features:

- Simple, easy to use interface.
- Supports (Only) G.711 A - Mu law codecs and RFC 2833 for DTMF digit delivery.
- Supports UPnP for NAT traversal. You can also set external IP address manually.
- TekPhone can record incoming audio if away mode selected. You can specify your own welcome message.
- ENUM (RFC 37612).