[SR-Users] _w_t_relay_to(): t_forward_noack failed when forwarding call

[Daniel Tryba]

On Fri, Nov 08, 2019 at 02:43:57PM +0200, Konstantinos Merentitis wrote:
> Right, apparently the incoming trunk sends a CANCEL request approx 20secs after the initial INVITE, i suppose because the kamailio subscriber is not answering, so the flow in my logs is normal.
> I should now rephrase my question and ask if there is a way to forward calls that are not answered - is there a timer for this? can you please point me to any direction?

See fr_inv_timer.
http://www.kamailio.org/docs/modules/5.2.x/modules/tm.html#tmp.p.fr_inv_timer

Which can be dynamically changed with 
http://www.kamailio.org/docs/modules/5.2.x/modules/tm.html#tm.f.t_set_fr
so if a user has voicemail enabled you could set it to 15s or else leave
it at 60/120s.