[Asterisk-Users] SIP reinvite on calls over multiple Asterisks

[Kevin P. Fleming]

Mikko Suniala wrote:

> client A behind Asterisk 1 calls client B behind Asterisk 2, after the 
> connections have been established, the Asterisks issue reinvites and 
> they will step out of the media path so that RTP traffic will stream 
> directly between the clients.

Yes. The media path will collapse down to the endpoints no matter how 
many Asterisk servers are in the middle, presuming the IP connectivity 
between each pair of endpoints during the transition is clear (no 
firewall/NAT issues).

> If it works, does the protocol between Asterisks need to be SIP or can 
> it also be IAX2, for example?

It must be SIP.