[SR-Users] using path in Subscriber table

Sergiu Pojoga pojogas at gmail.com
Sun Jun 13 16:36:08 CEST 2021

Why don't you ask these questions directly with the folks at dSipRouter?
Some are even members of this mailing list. They seem to have their own
free forum as well as paid support, which you may consider.


On Sat, Jun 12, 2021 at 11:52 PM Thành Trần Duy <thanh.dtran88 at gmail.com>

> Hi all,
> First of all, I would like to present the system model we are applying:
> - dSIPRouter : Sip relay for all users connected from the internet
> (installed with RTPEngine to handle media data).
> - kamailio 5.3.5: core system, registration server.
> - Asterisk 17: SBC.
> Sorry if our model seems a bit backwards but we have so many users (>12k
> configured users, > 3k concurrent registered users, > 500 concurrent users
> at cps 10), I don't know of any solution that can work with such a large
> load.
> With call outbound (from user to PSTN via SBC), everything is fine.
> But with internal or inbound calls, it wasn't successful.
> I showed that:
> - After dSIPRouter, the register message has Path parameter in SIP Header,
> - Kamailio store sip:user at domain in column contact at location table.
> - Using modparam registrar with use_path=1,
> path_mode=0, path_use_received=1, I stored this parameter in DB.
> - When calling internal or inbound, for the search destination of a phone,
> I am using sip_trace() function. But the result is always column contact.
> - With this uri, kamailio wasn't known and sent the invite to proxy.
> - Final error message: 404.
> I need one of these solutions:
> - get path column when result of sip_trace() like  sip:user at domain (with
> phone in internal network, it like sip:user at ipaddress).
> - write path value to column contact when the register message has it.
> - sip_trace can get a path instead of contact if it has.
> Or you can have other solutions, pls help me.
> We can talk and test via my Webex PMR.
> Many thanks,
> Thanh Duy Tran
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