Overview:

VoIP
media gateway is a cost effective and standards-compliant VoIP Media Trunk
Gateway from E1/T1 to Ethernet, which is generally called TG/SG or VoIP Voice
Gateway, designed for enterprise users and ITSP (Internet Telephony Service
Provider) environments. BD-MG900/BD-MG1000 locates on the interface of PSTN and
IP network, providing signaling transformation between SS7, ISDN PRI, R2/CAS,
Q.SIG, V5.2, DPNSS signaling and SIP & H.248 Protocol, as well as media
transfers between the PSTN and IP network.

With
modular design, it’s easily expandable from 1E1/T1 to 52E1/T1.

Application:

●   IPCC(IP Call center);

●   IP dispatcher;

●   Unify communication;

●   E1 Trunking port for operators,
traditional switch, IP soft switch and software of IPCC; 

Specification:

·Signaling
support:

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

–ISDN-PRI
(ITU-T Q.931, Q.921);

–V5.2 (ITU-T G.964, G.965)

-R2/CAS

–Q.SIG

–DPNSS 

·VoIP
protocol support:

–SIP

 RFC3326(Reason
header in SIP messages)

 RFC3372(SIGTRAN and SIP-T)

 RFC2327(sdp)

 RFC3398(ISUP-SIP Mapping)

 RFC3261(sip)

 RFC5806(Diversion Indication in SIP)

 RFC2833( DTMF )

 RFC3362(t.38)

 RFC 3261(SIP 2.0)

 RFC3204(MIME media types for ISUP and QSIG
Objects)

 RFC3578(Mapping of ISUP overlap to SIP)

–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，GSM，ARM,
ILBC; 

·Fax Support T38 and pass
through; 

·Network Protocol: IP,
NAT, ICMP, ARP, HTTP, BOOTP, FTP, TFTP, DHCP, PPPOE, SNMP, Diff-Serv 

·AdvaBDed
Voice Processing Technology: Voice Activity Detection (VAD), Comfort Noise
Generation (CNG), Echo CaBDellation, DTMF, Caller ID, and Flexible input/output
Gain Control. 

Capacity:

·1U equipment BD-MG900 can have 2pcs of
independent E1 modules, 2U equipment BD-MG916 can have 4pcs of independent E1
modules, 3.5U equipment BD-MG1000 can have 13pcs of independent E1 modules ; 

·Each Module contains:

–1～4
E1/T1;

–128 G.711 Channels;

–64 G.723, G.726, G.729
Channels;

–32 T.38 Fax Channels, 64
ConfereBDe Bridge;

Physical Specification:

Application Topology:

ITSP to PSTN (Internet Services Provider to PSTN)

Question: Does the 8E1 analog VOIP support SS7? If so,how many SS7 links?

Answer: Yes.one E1 for one channel SS7 link,so the device can support maximum 8 SS7 links.