i made sip trunk between 2 asterisk (asterisk A as load ballancer, and asterisk 1). when there is no call on server1 sip trunk status on load ballancer is ok without any problem, but when i send calls to this server from sip trunk (from load ballancer), trunk status still is ok for about 70 concurrent calls, but when numbers of concurrent calls increase about 100 concurrent calls and more, sip trunk will be unreachable. when trunk status is unreachable all call to this trunk will become busy with error :
unable to create channell of type sip, subscriber absent.
after 1 or 2 minute trunk status will be ok and again unreachable, so concurrent call wont go over 100 concurrent calls.
but from other side i have another server (asterisk 2) that its sip trunk on load ballancer allways is ok with 450 concurrent calls. their configs (asterisk 1 and 2) are the same, but i don’t know why sip trunk on asterisk 1 will be unreachable after high load of calls.
my resource is :
Host : virtual (ESXI)