[Serusers] Manipulate from_uri

Vitaly Nikolaev vitaly at voipsonic.com
Wed Feb 23 16:14:18 CET 2005


The answer is B2BUA

There actually two ways,

First is b2bua which is nice (for me ok.. I like it :)

Second if you assign the CallerID number to device.. the real callerid, (for
example in my network we use some fake numbers into devices and then change
it do real callerid (did) in b2bua), then some devices, for example SIPURA,
can send Anonymous as name in From and Contact and some GWs, will use it and
hide callerid on outgoing call.

And third:

And there are also Remote-Party-Id: field in SIP that partially supported by
SER and supported by most of GW and carriers, and that is probably RIGHT way
to do that.

When PSTN GW sends call to outside of ur network, it no just skip callerid,
u can do  it but it is wrong, it make it private, so usual ppl will not see
it but for example 911 and some toll free subscriber will see. That right
way and that how everybody should do cli blocking.

What is wrong in this method is that if you call goes from SIP to SIP and
you use as me fake CLI on devices, customers will see fake numbers because
as far as I know SIP devices does not support RPID (please correct me if I
am wrong) so in my case I will have to use combination of N1 and N3.. 




-----Original Message-----
From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] On
Behalf Of Java Rockx
Sent: Wednesday, February 23, 2005 7:20 AM
To: Klaus Darilion
Cc: serusers at lists.iptel.org
Subject: Re: [Serusers] Manipulate from_uri

Klaus,

I realize that RFC3261 says do not modify the From header, however, my
question is this;

When making SIP-to-SIP calls between two subscribers on the same SIP
proxy, how can one implement Caller ID Block when RPID is not usually
honored by SIP UAs - since this is really for PSTN gateways?

It seems that altering the From header in this case is the only
option. Have I missed something?

Regards,
Paul


On Wed, 23 Feb 2005 12:00:14 +0100, Klaus Darilion
<klaus.mailinglists at pernau.at> wrote:
> Hi Mik!
> 
> Do not modify the From: or To: URI - this is not allowed (RFC 3261) and
> will cause problems.
> 
> regards,
> klaus
> 
> Mik Cheez wrote:
> > Since I'm able to modify the URI for relaying, I would assume there
> > would be a way to modify the FROM_URI as well.  Has anyone managed to do
> > this with SER acting as a proxy?  Any other possible avenues to modify
> > the CALLID?
> >
> > Best regards
> >
> > _______________________________________________
> > Serusers mailing list
> > serusers at lists.iptel.org
> > http://lists.iptel.org/mailman/listinfo/serusers
> >
> >
> 
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