[SR-Users] Can only tranfer (refer) a call one time

[Grzegorz Stanislawski]

Hi.
We have proverb for this, i don't know english version but it goes like 
this:
"When it isn't known what it's all about, it's about money"

Your ITSP had troubles with proper handling second transfer for billing 
purposes so decided to disable it.
Proxy doesnt participate in call transfer, but ITSP it must charge users 
properly: Alice should pay just for call to Bob, Bob for "his" call to 
Charlie and so on.
If You are using sipX You should use sipXbridge, it replaces REFER with 
INVITE and bridges calls.

Grzegorz Stanislawski



W dniu 2011-02-25 11:40, niklas rehnberg pisze:
> Hi,
> Thank for the quick response.
> The issue occur only when the Alice is a PSTN client.
> My ITSP says that they only supporting one call transfer (very strange).
> They can not explain why etc...
> PSTN client:              Alice
> MGW/MGC(ITSP):     Cisco/SER
> Our sip server:           SIPX
>
> BR Niklas
> 2011/2/25 Iñaki Baz Castillo <ibc at aliax.net <mailto:ibc at aliax.net>>
>
>     2011/2/25 niklas rehnberg <niklas.rehnberg at gmail.com
>     <mailto:niklas.rehnberg at gmail.com>>:
>      > Hi,
>      > Have following issue:
>      >
>      > Alice calling Bob.
>      > Bob make call transfer to Charlie  (works fine)
>      > Charlie transfer Alice to David.    (the call break)
>      >
>      > Why is not possible to transfer the call more than one time?
>      > Is it any parameters?
>      >
>      > My ITSP use SER together with Cisco MGW.
>
>     Niklas, nothing in SIP protocol neither in SER/Kamailio makes your
>     scenario to fail. It must be a problem in your custom setup. Try
>     identifying the problem capturing SIP traces.
>     Also take into account that a proxy doesn't participate at all in the
>     process of a "call transfer". It's just a transparent mechanism for a
>     proxy.
>
>     --
>     Iñaki Baz Castillo
>     <ibc at aliax.net <mailto:ibc at aliax.net>>
>
>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users