[sr-dev] SIP-I ?

[Alex Balashov]

Yes, but don't elements of the MIME body get copied into the SIP responses by the UAS? 


Javi Gallart <jgallart at systemonenoc.com> wrote:

>Hi
>
>this is really a common practice among carriers. Actually the SS7 case 
>is easier because, unlike in SIP with the To, From..., in a regular
>ISUP 
>call the details of the initiating call are not sent in the backwards 
>direction: an ANM message indicating the call was answered doesn't
>carry 
>the numbers in the IAM that initiates the call. So it's a matter of 
>billing properly and accurately.
>
>Javi
>On 03/22/2013 03:27 PM, Alex Balashov wrote:
>> Yes, but what happens when those modifications, or responses based on
>those modifications, are returned to the sender? Much as with most SIP
>headers, the sending SS7 gateway can well say, "I didn't send that."
>>
>>
>> Javi Gallart <jgallart at systemonenoc.com> wrote:
>>
>>> Thanks Alex
>>>
>>> the first thing that came to my mind is performing some number
>>> manipulation. Imagine kamailio acting as a router for several
>carriers.
>>>
>>> One of them demands an international NOA with a weird prefix,
>whereas
>>> the other one, for the same destination, requires a pound (#) at the
>>> end, and so on. I agree with you in disliking idea of being too
>>> "invasive" in the body of the sip message, but it's something
>already
>>> doable for instance with SDP.
>>>
>>> Javi
>>> On 03/22/2013 02:50 PM, Alex Balashov wrote:
>>>> Hi Javi,
>>>>
>>>> The first question to ask is: if Kamailio could understand ISUP
>>>> parameters, what would it do with them?
>>>>
>>>> If the answer is "not a whole lot", chances are it is something
>that
>>>> only needs to be understood by the endpoints, and which Kamailio
>>> would
>>>> continue to be agnostic to, as it is now.  Kamailio is, above all
>>>> else, a message relay.
>>>>
>>>> -- Alex
>>>>
>>>>
>>>
>>> _______________________________________________
>>> sr-dev mailing list
>>> sr-dev at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
>
>
>_______________________________________________
>sr-dev mailing list
>sr-dev at lists.sip-router.org
>http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev

-- 
Sent from my mobile, and thus lacking in the refinement one might expect from a fully-fledged keyboard. 

Alex Balashov - Principal 
Evariste Systems LLC 
235 E Ponce de Leon Ave 
Suite 106 
Decatur, GA 30030 
United States
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/