VoIP PSTN Gateway
From Yate Documentation
Yate has the functionality of a Voip - PSTN gateway, it's main task is to provide signaling interworking and to transform the information it receives on one side in information compatible with the other side, like SIP to ISDN and / or SIP to SS7.
VoIP <-> PSTN Gateway in Yate
Yate can connect the existing PBX to alternative VoIP providers providing cost savings for enterprises.
It can also be used by providers to connect their TDM network to IP networks providing cost savings for long distance calls.
For this application usage of Sangoma cards is necessary.
You can see an example on how to use Yate to make conferences with Sangoma Wanpipe (PDF).
SIP - ISDN in Yate
SIP - SS7 in Yate
See also