1. RJ11 FXS ports
2. Protocol: SIP (RFC 3261), IAX2
3. Transport: UDP, TCP, TLS,SRTP
4. Voice Codec: G.711 (alaw / ulaw), G.722,G.726,
G.729A, GSM, ADPCM, Speex
5. Quality Enhancement ITU-T G.168 LEC, dynamic Jitter
Buffer, VAD, CNG, PLC
6. DTMF Mode: RFC2833, SIP INFO, In-band
7. Fully Compliant with SIP and IAX2
8. 24 FXS ports
9. Flexible calling rules
10. Reliable fax performance with T.38
11. Provides high-quality voice compression with
industry standard codecs
12. Line echo cancellation for 32, 64 or 128 ms echo
delays
13. Web-based GUI for easy configuration and management
14. Excellent interoperability with a wide range of
legacy and IP equipment