[asterisk-ss7] chan_ss7 SAM and overlap signaling

[Ercan Yücebas]

We have the issue on incoming calls. We didn't get the whole dialed
digits. 
Is it somethink, what can be turned on and off. 

Strange think is also that I'm getting the following warning after a
call
Feb 28 10:27:26 NOTICE[11663] chan_ss7.c: IAM (cic=1): ANI=*****
DNI=************ RNI= redirect=no/0 complete=0.
Feb 28 10:27:26 WARNING[11663] chan_ss7.c: Received SAM on CIC=1, but
got no IAM, state=5.



Right after that I'm getting only followings in log

Feb 28 12:33:01 NOTICE[11965] chan_ss7.c: IAM (cic=7): ANI=*****
DNI=108720041417114 RNI= redirect=no/0 complete=0.
Feb 28 12:33:08 VERBOSE[12011] logger.c:     -- SS7 hangup 'SS7/siuc/7'
CIC=7 Cause=16 (state=7)

BR

Ercan 



-----Original Message-----
From: asterisk-ss7-bounces at lists.digium.com
[mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of Kristian
Nielsen
Sent: Mittwoch, 28. Februar 2007 11:44
To: asterisk-ss7 at lists.digium.com
Subject: Re: [asterisk-ss7] chan_ss7 SAM and overlap signaling

Ercan Yücebas <ercan at goldenphone.ch> writes:

> Does any version of cham_ss7 supports overlap signaling?

I think chan_ss7 supports overlapped signalling on incoming calls:

    static void process_sam(struct ss7_chan *pvt, struct isup_msg
*inmsg)
    {
      ...
      strcat(pvt->iam.dni.num, inmsg->sam.sni.num);
      pvt->iam.dni.complete = pvt->iam.dni.complete ||
inmsg->sam.sni.complete;
      check_iam_sam(pvt);
    }

So on reception of SAM (subsequent address message), it just collects
the
digits.

Overlapped signalling is not supported for outgoing calls. This is
mostly
because there is no API in Asterisk for this (or at least there was not
when I
implemented the original version of chan_ss7).

I guess in the VoIP, overlapped dialing is not usual, as there usually
is a
full address before a call is initiated, and Asterisk works the same
way.

 - Kristian.

-- 
Kristian Nielsen, Software Developer
MySQL AB, Hvidovre, Denmark, www.mysql.com
Office: +46 18 174 400 ext. 4525
Are you MySQL certified?  www.mysql.com/certification

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