The following tutorials is a discussion of : MG-Media Gateways and Next-Generation Networks & 7 Customer Applications of Media Gateways

A few basics – SBC-Session Border Controllers connect SIP devices to the PSTN and MG-Media Gateways also connect SIP devices to the PSTN.  The difference is SBC’s are provider-class systems, whereas MG’s are designed for local connection to the PSTN.  That is, MG’s would be strategically located across the continental or world and interface the PSTN only as necessary.  In other words, even a high-volume company might only need a few MG’s or SBC’s to provide carrier-class performance including a vast array of features.

Here are 7 applications of Media Gateways:

- Connection of IP-PBX to PSTN

- Connection of IP-PBX to PSTN & SIP trunk provider

- Survivable connection to SIP trunk provider

- Connection of PBX & IP-PBX to PSTN & SIP trunk provider  - Hairpin or Hairpinning – calls come in from PSTN and routed back out to PSTN

- Connection of IP-PBX to Hosted VoIP provider

- Connection of IP-PBX & PSTN to Microsoft Lync Server

- Multiple SIP-Lync proxies – SIP to SIP calls, TDM to TDM calls and SIP to TDM calls

Click here for animated tutorial.  Custom animated tutorials are available from TECHtionary.com