Audio Conferencing with the PSTN will be a requirement as we get closer to the Enterprise users. Many of these users live on their cell phone and some do not have access to VoIP on those devices.
We will need to integrate a SIP Gateway at some point, although I am not all the fussy about building it. I would hope we can leverage existing work out there to accomplish this, for example...
Audio Conferencing with the PSTN will be a requirement as we get closer to the Enterprise users. Many of these users live on their cell phone and some do not have access to VoIP on those devices.
We will need to integrate a SIP Gateway at some point, although I am not all the fussy about building it. I would hope we can leverage existing work out there to accomplish this, for example...
https://code.google.com/p/webrtc2sip/
http://jssip.net/
It has to be MIT or BSD license.