[SIPForum-discussion] should UA accept SIP INVITE destined to a different domain than was initially registered to

HM Kias hmkias at gmail.com
Thu Oct 6 06:22:54 UTC 2011

Does the proxy accept multiple domains invite and is there any redirects
done for open relay calls?

Please advise.


On Tue, Oct 4, 2011 at 1:55 PM, Keith Lin <iamchiaweilin at gmail.com> wrote:

> Hi everyone,
> My question is "Should an UA accept SIP INVITE, whose "to header" field
> contains a different domain than
> the one that this UA initially registered with?"
> Let me use an example to illustrate my question again:
> (1) an UA registered with a proxy say a.com
>      let's say this UA has an URI of 111 at a.com
> (2) if this UA receives an INVITE with to header field 111 at b.com
> Should it accept this invite?
> because I initially registered with a.com, an incoming request is destined
> to b.com
> wouldn't there be a security problem if this request is accepted?
> Thank you guys~
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HM Kias
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