[OpenSIPS-Users] How to extract SIP-I ISUP 'Redirecting number' parameter

[Vlad Patrascu]

Hi,

I've pushed the fix, but bear in mind that you could still extract the 
redirecting number without full subfield access support. By just reading 
from "$isup_param(Redirecting number)" you get, as a string, the full 
ISUP parameter value in hex representation. From that, knowing the 
parameter format from the ISUP specification, you could parse the number 
yourself in the OpenSIPS script.

Regards,

Vlad Patrascu
OpenSIPS Developer
http://www.opensips-solutions.com

On 29.03.2018 13:52, Eugene Prokopiev wrote:
> Btw, is it possible to extract ISUP part as is in binary form and read
> by some external script? Can anybody advice me any library to parse
> ISUP binary data?
>
> 2018-03-29 12:50 GMT+03:00 Eugene Prokopiev <enp at itx.ru>:
>> Thank you!
>>
>> I submitted https://github.com/OpenSIPS/opensips/issues/1323 - maybe
>> your patch can be applied?
>>
>> 2018-03-29 10:53 GMT+03:00 Arto Kuiri <art666 at hotmail.com>:
>>> Hello,
>>>
>>> I had same problem and made my own patch. See attached diff, it adds support for:
>>> - redirection info (reason in same format as in SIP diversion header, commented ITU Q.763 version)
>>> - original called number
>>> - redirection number
>>>
>>> Meant to make feature request/patch, but somehow forgot it.
>>>
>>> Best regards,
>>> Arto Kuiri
>>>
>>>
>>>
>>>
>>> Lähettäjä: Users <users-bounces at lists.opensips.org> käyttäjän Vlad Patrascu <vladp at opensips.org> puolesta
>>> Lähetetty: 28. maaliskuuta 2018 20:48
>>> Vastaanottaja: users at lists.opensips.org
>>> Aihe: Re: [OpenSIPS-Users] How to extract SIP-I ISUP 'Redirecting number' parameter
>>>
>>>
>>> Hi,
>>>
>>> Unfortunately "Redirecting Number" is not currently supported, but you
>>> could open up a feature request regarding this, as it would be not very
>>> difficult to implement.
>>>
>>> Regards,
>>>
>>> Vlad Patrascu
>>> OpenSIPS Developer
>>> http://www.opensips-solutions.com
>>>
>>>
>>> Home — OpenSIPS Solutions
>>> www.opensips-solutions.com
>>> OpenSIPS is a mature Open Source implementation of a SIP server. OpenSIPS is more than a SIP proxy/router as it includes application-level functionalities.
>>>
>>> On 28.03.2018 18:32, Eugene Prokopiev wrote:
>>>> Hi,
>>>>
>>>> I need to extract ISUP parameter 'Redirecting number' from SIP-I
>>>> INVITE request and add it as SIP header with 'X-' prefix to process in
>>>> FreeSWITCH. Can't found any about 'Redirecting number' in
>>>> http://www.opensips.org/html/docs/modules/2.3.x/sip_i.html, so how to
>>>> extract it? 'Redirecting number' parameter value is visible in
>>>> Wireshark now as ISUP parameter with t=11 and l=7
>>>>
>>>
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>>>
>>>
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>>>
>>
>>
>> --
>> WBR,
>> Eugene Prokopiev
>
>