it sound like to me that you are not passing cot test properly, most likely the ones preformed with the iam message. When I was look through the libss7 code I could only see were it addressed and iam with cot test type 1 not cot test type 2. -----Original Message----- From: asterisk-ss7-bounces@xxxxxxxxxxxxxxxx [mailto:asterisk-ss7-bounces at lists.digium.com] On Behalf Of Anton Sent: Thursday, September 25, 2008 12:16 AM To: asterisk-ss7 at lists.digium.com Subject: Re: chan_ss7 Dead Air for ~20% of the calls I have to note that a while ago one edge of the problem was in IAX connections between systems - so IAX was giving oneway for a certin amount of calls - and switching to SIP resoved it - but now it might be just chan_ss7 related. On Wednesday 17 September 2008 21:43, Antoine Megalla wrote: > Hello, > ? > I have an Asterisk SS7 installation used for a prepaid > card application. Everything is sort of working fine, but > I have a nagging problem: > for almost 20% of the calls the callers who dial in on > the SS7 lines are getting dead air, they cannot hear the > IVR prompts, no audio can be heard on the line howerver > if I enter the DTMF digits, the menus continue, but still > no audio in any IVR menu, for the other 80% of the calls > the system is working fine. > The setting is as follows: > Asterisk-1.2.24 > asterisk-addons-1.2.7 > Zaptel-1.2.20.1 > libpri-1.2.5 > chan_ss7-1.0.9 > ? > Red Hat Enterprise Linux Server release 5 > kernel 2.6.18-8.el5xen > ? > Digium TE410 card > 4 E1s are used, first E1 carries the signalling channel > on TS 16 > I am not sure if this linked to chan_ss7 or zaptel, I > have no way for testing this, and everything looks good > on the console, no problems are reported. > I would appreciate it if anyone can point me in the right > direction for solving such a nagging problem. > Thank you and best regards, > ? > Antoine Megalla. > SAND (S.A.E) > > > > > _______________________________________________ > --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