Outbound Call is not working in first time

Hi All,

I’m very new to Asterisk and I’m facing some issue with Asterisk Server. I using Sangoma Vega 50 gateway for outbound calls. When I dial outbound call, first time i’m getting this error and call is not connecting but second time the call is getting connected. it is happening for all calls i need to dial twice the same number to do the outbound calls.

WARNING[2386]: chan_sip.c:3974 retrans_pkt: Retransmission timeout reached on transmission 2875546348d60b075e9be4046426f66a@ for seqno 102 (Critical Request) – See https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions
Packet timed out after 32000ms with no response

Thanks in Advance.

Did you see https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions ?

yes i saw but it is saying may be issue with 3 way handshake. I get connected when i dial second time. For each numbers i need to dial twice to get the call connected.

You need to get a SIP trace of a failed call, to confirm the correct IP addresses are being sent, and, if not, who is sending the wrong one.