[SR-Users] Topoh module & call leg/transaction does not exist

Olli Attila olli.attila at oatel.net
Tue Feb 28 21:47:44 CET 2017


I'm still having this issue and now running the new Kamailio 5.0 branch. 
The pcap trace is attached to this email which shows the whole sip 
conversation before and after topology hiding.

Has anyone stumbled upon this kind of "SIP 481 Call leg/Transaction does 
not exist" error when routing BYE messages while using topoh module?



On 19.2.2017 23:23, Olli Attila wrote:
> Hello,
> I recently started testing topology hiding module on Kamailio and 
> encountered a problem where B party hangs up, Kamailio can't identify 
> the ongoing transaction to which the BYE should be related to and 
> instead of tearing the call down Kamailio just sends back "481 Call 
> leg/Transaction does not exist" to B party.
> On Kamailio config I have only enabled the topoh.so -module with 
> default options and configured this to enable masking:
> modparam("topoh", "mask_callid", 1)
> Here is what the INVITE to B party looks like and the BYE message 
> coming from the B party:
> http://pastebin.com/raw/f63zUmid
> When debugging on Kamailio end i get:
> http://pastebin.com/raw/ZefGAz30
> Is this a Kamailio issue or a softphone issue on B party end?
> Cheers,
> --Olli
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