[asterisk-ss7] VÁ: Understanding libss7 code

[Rana Dhekial]

Attached please find the CPG message that PSTN sends skyswitchmicroasterisk*CLI> <[0] MSU skyswitchmicroasterisk*CLI> [ 81 e5 16 ] skyswitchmicroasterisk*CLI>  Network Indicator: 3 Priority: 0 User Part: ISUP (5) skyswitchmicroasterisk*CLI>  [ c5 ] skyswitchmicroasterisk*CLI>  OPC 147 DPC 3005 SLS 1 skyswitchmicroasterisk*CLI>  [ bd cb 24 10 ] skyswitchmicroasterisk*CLI>   CIC: 1 skyswitchmicroasterisk*CLI>   [ 01 00 ] skyswitchmicroasterisk*CLI>   Message Type: CPG skyswitchmicroasterisk*CLI>   [ 2c ] skyswitchmicroasterisk*CLI>   --FIXED LENGTH PARMS[1]-- skyswitchmicroasterisk*CLI>   Event Information: skyswitchmicroasterisk*CLI>    In-band information or an appropriate pattern is now available skyswitchmicroasterisk*CLI>    [ 03 ] skyswitchmicroasterisk*CLI>   --OPTIONAL PARMS-- skyswitchmicroasterisk*CLI>   Backward Call Indicator: skyswitchmicroasterisk*CLI>    Charge indicator: 2 skyswitchmicroasterisk*CLI>    Called party's status indicator: 0 skyswitchmicroasterisk*CLI>    Called party's category indicator: 0 skyswitchmicroasterisk*CLI>    End to End method indicator: 0 skyswitchmicroasterisk*CLI>    Interworking indicator: 0 skyswitchmicroasterisk*CLI>    End to End information indicator: 0 skyswitchmicroasterisk*CLI>    ISDN user part indicator: 1 skyswitchmicroasterisk*CLI>    Holding indicator: 0 skyswitchmicroasterisk*CLI>    ISDN access indicator: 1 skyswitchmicroasterisk*CLI>    Echo control device indicator: 0 skyswitchmicroasterisk*CLI>    SCCP method indicator: 0 skyswitchmicroasterisk*CLI>    [ 11 02 02 14 ] skyswitchmicroasterisk*CLI>   Optional Backward Call Indicator: skyswitchmicroasterisk*CLI>    In-band information indicator: 1 skyswitchmicroasterisk*CLI>    Call diversion may occur indicator: 0 skyswitchmicroasterisk*CLI>    Simple segmentation indicator: 0 skyswitchmicroasterisk*CLI>    MLPP user indicator: 0 skyswitchmicroasterisk*CLI>    [ 29 01 01 ] skyswitchmicroasterisk*CLI>   Cause Indicator: skyswitchmicroasterisk*CLI>    Coding Standard: 0 skyswitchmicroasterisk*CLI>    Location: 4 skyswitchmicroasterisk*CLI>    Cause Class: 1 skyswitchmicroasterisk*CLI>    Cause Subclass: 1 skyswitchmicroasterisk*CLI>    Cause: User busy (17) skyswitchmicroasterisk*CLI>    [ 12 02 84 91 ]  > Subject: RE: [asterisk-ss7] VÁ: Understanding libss7 code> From: adomjan at tvnet.hu> To: dhekial at msn.com> CC: asterisk-ss7 at lists.digium.com> Date: Thu, 18 Dec 2008 21:03:47 +0100> > should put in chan_dahdi after ISUP_EVENT_CPG and I think have to parse> and pass this busy attribute to chan_dahdi via event_cpg.> How looks like this kind of CPG?> > On Thu, 2008-12-18 at 11:56 -0800, Rana Dhekial wrote:> > I am not sure whether ITU ANSI standrad calls for it. But in real life> > I am having following probelm.> > > > > > A SIP phone registered with Asterisk calls a Mobile subscriber > > > > Asterisk ---------IAM------------>PSTN ( Mobile subscriber )> > > > Asterisk <--------ACM--------------PSTN > > > > The SIP phone hears the ring back tone> > > > The Mobile subscriber rejects the call by pressing the release button.> > In this part of the world, call does not get forwarded to Mobile> > subscriber's voice mail. Probably incumbennt PLMN does not have voice> > mail service. Instead PSTN sends CPG with user busy.> > > > Asterisk <----CPG ( with user busy)----PSTN> > > > > > The SIP phone keeps hearing the ring back tone for 60-90 seconds and> > finally the PSTN sends RELEASE after 60-90 seconds. > > > > > > Asterisk <------REL-------------------PSTN> > > > Asterisk --------RLC ----------------->PSTN> > > > > > My idea is to cut this 60-90 seconds to 0 by sending REL to PSTN> > immediately after getting the CPG with user busy from PSTN. I have> > tried talking to PSTN to send RELEASE to Asterisk right after they> > send CPG with user busy but has been invain. > > > > So any help with the code will be appreciated.> > > > thanks,> > > > > > > > > From: adomjan at tvnet.hu> > > To: asterisk-ss7 at lists.digium.com> > > Date: Thu, 18 Dec 2008 09:02:08 +0100> > > Subject: [asterisk-ss7] VÁ: Understanding libss7 code> > > > > > The code is very readable, I red the all :)> > > where is in the itu/ansi standard that we have to do it?> > > > > > -- eredeti üzenet --> > > Tárgy: [asterisk-ss7] Understanding libss7 code> > > Feladó: Rana Dhekial <dhekial at msn.com>> > > Dátum: 2008.12.18. 01:27> > > > > > > > > Hi Matthew,> > > > > > > > > Can you point me to some documentations to understand the libss7> > source code and how it is linked with Asterisk? I have been struggling> > to modify your code to send ISUP_RELEASE on getting CPG with user busy> > from PSTN but has been successful yet.> > > > > > thanks,> > > > > > Rana> > > > > > > > > _________________________________________________________________> > > Send e-mail anywhere. No map, no compass.> > >> > http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_anywhere_122008> > > _______________________________________________> > > --Bandwidth and Colocation Provided by http://www.api-digital.com--> > > > > > asterisk-ss7 mailing list> > > To UNSUBSCRIBE or update options visit:> > > http://lists.digium.com/mailman/listinfo/asterisk-ss7> > > > > > > > > _______________________________________________> > > --Bandwidth and Colocation Provided by http://www.api-digital.com--> > > > > > asterisk-ss7 mailing list> > > To UNSUBSCRIBE or update options visit:> > > http://lists.digium.com/mailman/listinfo/asterisk-ss7> > > > > > > > ______________________________________________________________________> > Send e-mail faster without improving your typing skills. Get your> > Hotmail® account.

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