[OpenSIPS-Users] The problem

[咖啡杯里的茶]

Opensips registration through the network, then connect the asterisk,  while talking on the phone, sometimes can play out, but sometimes an  error again.Call failed:Service Unavailable. 
What reason is this excuse me.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opensips.org/pipermail/users/attachments/20131009/1dcbefdb/attachment.htm>