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

[Hemant Kumar]

Hi,

I had given just a common scenario which should also be handled by UA. So
keeping that in mind I dont think UA should bother about domain in To-header
and should accept it.

**Regards,
Hemant

On Thu, Oct 6, 2011 at 12:41 PM, Keith Lin <iamchiaweilin at gmail.com> wrote:

> Hi Hemant,
>
>
> TO header will not be modified?
> In my case, the TO header was modified, so should my UA accept this INVITE
> still?
>
>
> regards,
> Keith
>
>
> 2011/10/6 Hemant Kumar <uniqhemant at gmail.com>
>
>> Hi,
>>
>> Ideally it should accept it.
>>
>> Think of a scenario in which call is being redirected by a proxy as the
>> called party(callee at a.com) is not available.
>> There is a possibility that the  call is redirected to a user(
>> redirected at b.com) belonging to a different domain than the called party.
>> In this case the TO header will not be modified but Request URI will be
>> modified to redirected at b.com.
>>
>> Regards,
>> Hemant
>>
>>
>> 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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>>>
>>
>>
>> --
>> - Hemant
>>
>
>


-- 
- Hemant
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