[OpenSIPS-Users] Need some help around mi_datagram module .

[Ben Newlin]

Final reply timeout:
https://opensips.org/docs/modules/3.6.x/tm.html#param_fr_timeout
https://opensips.org/docs/modules/3.6.x/tm.html#pv_T_fr_timeout

Final reply timeout (invite specific):
https://opensips.org/docs/modules/3.6.x/tm.html#param_fr_inv_timeout
https://opensips.org/docs/modules/3.6.x/tm.html#pv_T_fr_inv_timeout

If you are using dialog module, that also has a timeout:
https://opensips.org/docs/modules/3.6.x/dialog.html#pv_DLG_timeout

We don’t use b2b module so ymmv, but it appears to also have a timeout:
https://opensips.org/docs/modules/3.6.x/b2b_logic.html#param_b2bl_th_init_timeout

B2B and dialog modules also have functions to terminate calls:
https://opensips.org/docs/modules/3.6.x/b2b_logic.html#mi_b2b_terminate_call
https://opensips.org/docs/modules/3.6.x/dialog.html#mi_dlg_end_dlg

You could set a timer externally and call those functions via MI. Or you could use the mi_script module to call them from the scrip:
https://opensips.org/docs/modules/3.6.x/mi_script.html

This could be triggered by a timer_route, a script sleep (not ideal), or the event_routing module which also has a timeout:
https://www.opensips.org/Documentation/Script-Routes-3-6#toc8
https://opensips.org/docs/modules/3.6.x/cfgutils.html#func_sleep
https://opensips.org/docs/modules/3.6.x/event_routing.html



Ben Newlin

From: Users <users-bounces at lists.opensips.org> on behalf of Sasmita Panda via Users <users at lists.opensips.org>
Date: Friday, December 12, 2025 at 5:50 AM
To: OpenSIPS users mailling list <users at lists.opensips.org>
Subject: [OpenSIPS-Users] Need some help around mi_datagram module .

 EXTERNAL EMAIL - Please use caution with links and attachments

________________________________
Hi ,

Below is the opensips configuration used as a b2b user agent , I am using for voice connector app .

Below is the configuration .
loadmodule "event_datagram.so"
loadmodule "mi_datagram.so"
loadmodule "b2b_entities.so"

modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")

modparam("tm", "fr_timeout", 2)
modparam("tm", "fr_inv_timeout", 3)
modparam("tm", "restart_fr_on_each_reply", 0)
modparam("tm", "onreply_avp_mode", 1)

modparam("mi_datagram", "socket_name", "udp:127.0.0.1:8002<http://127.0.0.1:8002>")

####### Routing Logic ########

route {
        if (!is_method("INVITE") || has_totag()) {
                send_reply(405, "Method not allowed!\n");
                exit;
        }
        ua_session_server_init($var(b2b_key), "drbh");
        xlog("Started new call for $var(b2b_key)\n");
        exit;
}

I am facing one issue . In case the voice connector app is not running . Opensips published the event and hence the Invite to opensips wont get answered as the application subscribed the event and answering to the Invite request is not working .

      Is there any option opensips terminate the call if that won't get answered in a stipulated time frame ?

Thanks & Regards
Sasmita Panda
Senior Network Testing and Software Engineer
3CLogic , ph:07827611765
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