[Spce-user] Using REFER method for transfer

[Jon Bonilla (Manwe)]

El Thu, 8 Nov 2012 14:56:28 -0800
Ali Ardestani <ali.ardestani at pnmac.com> escribió:

> Hi All,
> 
> I am using sipwise in front of my sipxecs cluster as SBC, I implemented it
> per http://www.sipwise.com/news/technical/byov-system-spce-as-sbc/ and I
> have also allowed REFER in kamailio-proxy config as well as whilelisting
> all headers in sems.cfg (config files are attached) I am getting
> 
> SIP/2.0 500 Server Internal Error
>

Looks like sems.log gives you the error and the reason for it.

INFO: remote cseq lower than previous ones - refusing request
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