Media Gateway

Introduction: 

AI-MG800 is a cost effective and standards-compliant Trunk Media Gateway, which is generally called TG/SG or VoIP Voice Gateway, designed for enterprise users and ITSP (Internet Telephony Service Provider) environments. AI-MG800 locates on the interface of PSTN and IP network, providing signaling transform between SS7, ISDN PRI signaling and SIP signaling, as well as media transfer between the PSTN and IP network.

Signaling support

n        SS7 SS7(ITU-T Q.700 series), 24bits/14bits PC, ISUP/TUP

n        ISDN-PRI(ITU-T Q.931,Q.921)

n        V5.2(ITU-T G.964,G.965)

VoIP protocol support

n        SIP(RFC3261,RFC3362(T.38),RFC2833(DTMF)), RTP/RTCP

n        Codec: G.711µ-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

n        Echo Cancellation: G.168 128 ms Network Echo Canceller

n        FAX Support T38 and pass through

n        Generic Voice Activity Detection (VAD)

n        Generic Comfort Noise Generation (CNG)

n        Calling control: Called/Calling party number translation; second stage dialing, Autodialing with DTMF, Ring Back tone.

n        Flexible call routing management

Capacity

n        A 1U equipment can have 2 independent VoIP module

Each Module contains:

n        1~4 E1

n        128 G.711 Channels                            

n        64 Complex Voice Codec Channels      

n        32 T.38 Fax Channels         

Interface

         E1 RJ45 75Ω or 120Ω *T1 as an optional

     Ethernet 10M/100M

     Console port RJ45 to RS232

Physical Specification