Analog Gateway/IPPBX locates at the interface between PSTN and IP to achieve the conversion between FXO/FXS and VoIP SIP,meanwhile complete the media stream transformation between the bearer channel of PSTN and IP.

Used for IPCC, IP Dispatch, Unify Communication, VoIP network, operators, and so on.

· 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.

Physical Capacity and Specification:

1.   Basic application

2.   Connection for two different places/offices via FXS VoIP Gateway

3.   Function and Features of IPPBX

4.   Solutions for IP call center

5.   Example Application