[asterisk-ss7] Chan_ss7.so

[TeleCom-DesignGroup]

Tom.

You are absolutely right - chan_ss7 is nicely written code.
I started working on a ANSI / ITU capable version of it quite a while 
ago but didn't have time to finish it.
I have patched sources for V0.30 which have implementations for ansi 
pointcodes, ulaw audio codecs and the different ISUP layout.

Anyone who would like to continue the work on it and port the patches to 
the current version - please email me - I'll send you the source.

Peter.

Tom Chandler wrote:
> The chan_ss7 module is a framework, and yes it is the ITU model, not 
> the US ANSI model.  But could we not take this framework, identify 
> differences, ie, point codes, layout of IAM, etc, and start a patch 
> program to move it closer to the ANSI model.  There is a lot of really 
> good code in the program, and it's not like starting from scratch....
>
> The first goal would be to get the ISUP signaling functions working....
>
>
> Thank You
> Tom Chandler
>
> ----- Original Message ----- From: "P.B." <admin at tc-dg.net>
> To: <asterisk-ss7 at lists.digium.com>
> Sent: Friday, April 07, 2006 7:45 AM
> Subject: Re: [asterisk-ss7] Chan_ss7.so
>
>
>> Hello.
>>
>> It seems that there are quite a few people who want to use chan_ss7 
>> in the US.
>>
>> I wrote this before - but the SS7 version used in the US is the ANSI 
>> version which is quite different on many protocol levels from the
>> (European / rest of the world) ITU version.
>> Chan_ss7 is currently only implemented for the ITU version.
>>
>> You can get it to work on a T1 (1.544 Mbit/s) trunk between two 
>> Asterisk / chan_ss7 machines but not with any other live equipment.
>> Not even a simple audio channel since the US uses uLaw audio 
>> compression and chan_ss7 is hardcoded to aLaw compression.
>>
>> It is quite a big undertaking to create an ANSI compatible version of 
>> the current chan_ss7 and then add other protocol layers which are
>> used quite often in the US like SCCP etc.
>>
>> Sorry folks  - but chan_ss7 currently only works in a ITU / E1 
>> enviroment.
>>
>> Peter.
>>
>>
>> Tim Danner wrote:
>>> I would like to use this in the US, my problem is that I don't have 
>>> much time to work independantly currently.  My issue really is that 
>>> I need to see the different levels of SS7 be laid out like:
>>> TCAP: local databse
>>> SCCP: remote SS7 database
>>> ISUP: Circuit info
>>> MTP3: GateWay for services
>>> In some Configuation file to interface with Asterisk.
>>>
>>> -----Original Message----- From: Tom Chandler 
>>> [mailto:tchandle at eastex.net] Sent: Thu 3/30/2006 11:50 AM To: 
>>> asterisk-ss7 at lists.digium.com Cc: Subject: [asterisk-ss7] Chan_ss7.so
>>>
>>>
>>> I have got chan_ss7.so (8.3) running on two Asterisk 1.2.4 servers 
>>> back to back with T1.5 connection between them.
>>>
>>> I can complete calls in both directions between the two switches, so 
>>> I believe that SS7 is working.
>>>
>>> I would like to extend the package,however before I work on it, 
>>> questions:
>>>
>>> 1.  Is anyone using this package in the US, and if so, are the 
>>> connections to a STP or to other switch.
>>>
>>> 2.  First requirement is to expand the package to support two 
>>> signaling links.
>>>
>>> 3.  Add trunk cic (pic code ie, 0288 = AT&T), so it can be included 
>>> in the IAM.
>>>
>>> 4.  As anyone studied the dump file, when capturing MSU's.  I am 
>>> having trouble with the fields before the message type, and some 
>>> other minor layout issues.
>>>
>>> If anyone has answers to the above, I would appreciate, and would 
>>> welcome anyone who wishes to work on these extensions to the 
>>> package(Many more to add, but start small).
>>>
>>> Thank You
>>> Tom Chandler
>>>
>>>   
>>> ------------------------------------------------------------------------ 
>>>
>>>
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>>
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