Hi,

If you want to change the global value for the invite timeout, you can use the tm parameter "fr_inv_timer" - note, this will affect all your calls.

If you want to change the behavior only for calls going to PSTN, before relaying to GW do: avp_write("i:10","fr_inv_timer_avp"); where first param "i:10" gives as integer the timeout value - note you have to load the avpops module.

To override the default reply 408 Timeout generated by the invite timeout, set a failure route for calls going to GW : failure_route[x] { if (t_check_status("408")) { t_reply("503","Service Unavailable"); }; }

Best regards, Marian

scm-j@nuntius.com wrote:

When I receive a SIP INVITE from my service provider, the normal call flow is for SER to forward it to my Asterisk for authentication. However, if the Asterisk is down, SER keeps attempting by sending multiple INVITEs to Asterisk, until it receives a CANCEL from the service provider.

The preferred behavior is for SER to give up after 2-3 unsuccessful attempts and send a “503 Service Unavailable” message back to the service provider. Is there a way to do this in ser.cfg or anywhere else in SER? Any examples would be much appreciated.

Regards,

SCM

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