[OpenSIPS-Users] Delete alias references in SIP messages

[Bogdan-Andrei Iancu]

Hi Guillaume,

Changing TO header is more or less against the RFC3261 and you should 
not do it. More or less the same discussion as for the FROM header.

Even if in openSIPS you can change the FROM without violating the RFC 
(doing and undoing the change for all the sequential request inside the 
dialog), for TO there is no such mechanism.

Why is so critical to remove it from the alias from the TO header ? 
Understanding the cause may help me to give you some ideas ;)

Regards,
Bogdan

Guillaume Lacroix wrote:
> Hello,
>
> I would like to know if there an easy way to remove any reference to the 
> SIP alias in the SIP messages for some incoming calls and to replace 
> them with the SIP username.
>
> Roughly, a user dial the number 012345 from the PSTN. The call goes to a 
> PSTN GW and is then sent to OpenSER through an INVITE message (INVITE 
> 012345 at domain...). The To header also contains 012345 at domain. After the 
> look up in the alias DB, the alias is replace by the SIP username, but 
> it remains in the To header field.
>
> What I would like to do is to remove completely the alias reference and 
> replace it with the username, not only in the INVITE but also in any 
> following messages (so that the messages received by the UA never 
> contains any reference to the alias) I try to use append_hf/remove_hf on 
> the To header, it works, but the alias still appears in some other 
> messages (ACK..).
>
> Does anyone know if there is a way to achieve that (not for all incoming 
> number but only the number starting with 0123 for example) ?
>
> Thanks and regards,
> Guillaume
>
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