Used for IPCC, IP Dispatch, Unify Communication, VoIP network, operators, and so on.
Specification:
Signaling: SS7, PRI, R2, CAS, Q.SIG, V5.2, and DPNSS;
● VoIP Protocol: SIP and H.248;
● Codec: G.711 U-Law and A-Law, G.711 Appendix 1, G.723.1 and G.723.1 Annex A, G.729 Annex A and Annex B, G.726-16，G.726-32，GSM，GSM-EFR，ARM，ARM-WB, ILBC;
● Fax Protocol: T30, T38, pass through;
● Network Protocol: IP, NAT, ICMP, ARP, HTTP, BOOTP, FTP, TFTP, DHCP, PPPOE, SNMP, Diff-Serv;
● Advanced Voice Processing Technology: Voice Activity Detection (VAD), Comfort Noise Generation (CNG), Echo Cancellation, DTMF, Caller ID, and Flexible input/output Gain Control.