Hello,

they are not related, the warning is usually for requests, but is harmless anyhow.

Changing 503 in 500 is from RFC specs, but you can disable it:

http://kamailio.org/docs/modules/stable/modules/tm.html#remap_503_500

Cheers,
Daniel

On 6/14/13 5:42 PM, Mino Haluz wrote:

Hi,

I'm struggling to solve one problem with 503 reply code.

Kamailio receives 503 and changes it to 500, with error in log

WARNING: script writer didn't release transaction

I inspected incoming 503 (from Cisco gateway), everything seems to be ok except for Via:

SIP/2.0/UDP localip:5060;branch=z9hG4bK47e3.c400aa13.0,SIP/2.0/UDP ip2:5060;branch=z9hG4bK37170104;rport=5060

Does kamailio support this kind of Via?

Thanks,

Mino
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