[SR-Users] is $td.did avp a normal avp?

[Jan Janak]

On Tue, Apr 26, 2011 at 8:42 PM, Klaus Darilion
<klaus.mailinglists at pernau.at> wrote:
> Jan Janak wrote:
>>
>> On Tue, Apr 26, 2011 at 7:41 PM, Klaus Darilion
>> <klaus.mailinglists at pernau.at> wrote:
>>>
>>> Not helping with this issue - but having another question: what is
>>> $td.did?
>>> Is it a pseudo variable (as it starts with $)? Is it somehow
>>> related/derived
>>> to/from $td or is the '.' just a character like a-z?
>>
>> This is the SER syntax for AVP names, see
>> http://sip-router.org/wiki/devel/avps-ser
>
> Aha. But how does sip-router decide if $td is a ser AVP or a Kamailio pseudo
> variable?

If it starts with ${fu,tu,fd,td,g}. then it is taken as a SER AVPs,
otherwise it is a Kamailio pseudo variable.

-Jan