[SR-Users] Request Timeouts

Alex Balashov abalashov at evaristesys.com
Wed Feb 7 01:54:19 CET 2018

Hi Steve,

The CSeq line of the 408 Request Timeout message will tell you which
request method type it corresponds to, so you'll know what request it's

INFO requests, like all call-related requests (except for hop-by-hop
ACKs acknowledging a negative reply) go between the endpoints, and
Kamailio simply passes them through. It should not be responding with
anything to a request like that.

-- Alex

On Wed, Feb 07, 2018 at 12:49:45AM +0000, Wilkins, Steve wrote:

> Hello,
> This is actually a follow up to my last question about some providers calls being dropped.  I noticed that when calls are dropped, I see a Kamailio log message "Request Timeout" about 5-10 seconds before the call is dropped. I am wondering what could cause this while a call is in progress.
> Does Kamailio need to respond to Asterisk with a '200 OK' for an INFO request sent to Kamailio from Asterisk?  I am not sure what else could cause this call dropping behavior.
> Note: It does not appear to be caused from a missing 'ACK'.
> Thank you,
> -Steve

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Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) 
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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