We have requirements to support some of our customers who are currently connected over VSAT based connections. The latency is really high (and nothing can be done to change that at the moment) ideally the requirements is to support latencies up to 2000ms. We are currently testing at the moment and we are running Asterisk 22.214.171.124 on the test server. The calls however get dropped by Asterisk with the error message
missing no reply to our critical packet
I have read the documentation
voip-info.org/wiki/view/Aste … ansmit.txt
and i definitely know its not NAT Issues etc (nat=yes is set for the clients). However I know there are some packet losses but still the satellite customers at the moment can connect over our current old voip platforms (we are currently using Sysmaster) and it works without dropping the calls. We are looking to replace this with an Asterisk based solution for our satellite customers but cannot do this until we can reliably connect them without calls dropping.
At the moment it seems the whole 3way handshake that is being done by Asterisk in the sip channels causes the calls to drop.
I would like a recommendation from Asterisk people (or this gracious forum members) to the best way to get the current versions of Asterisk working over such high latencies.
Also I have read the forums and I notice someone mentioning something about older versions of Asterisk working over satellite connections (Asterisk 1.0) and the newer 1.4 not working well.
Would appreciate any feedback as soon as possible really