Summary:ASTERISK-06616: Getting ring back modulation on 79XX phones.
Reporter:RT (rtorrey58)Labels:
Date Opened:2006-03-24 13:07:47.000-0600Date Closed:2011-06-07 14:08:27
Versions:Frequency of
Description:Ring back seems to go up and down in loudness on outbound. Almost seems like a double ring.
Comments:By: RT (rtorrey58) 2006-03-24 13:08:49.000-0600

Soory forgot to say SVN is 1.2.5

By: Olle Johansson (oej) 2006-03-26 18:30:16.000-0600

Ok, so please explain what your Asterisk-related issue is... Thanks.

By: dea (dea) 2006-03-26 19:21:31.000-0600

Try adding progressinband=no to the user/peer/friend for that phone.
I just added an FXO port at home and my 7940 did the same thing.

What you are hearing is the phone generated ringback and the PSTN
generated ringback.

By: nenadr (nenadr) 2006-03-26 23:59:26.000-0600

I have expirienced same issue on Linksys SPA-941, tried to solved it with progressinband=no in [global] section (where it is described in sip.conf.sample), but I didn't managed to sovle it. My solution for SPA941 was setting parameter called "sticky 183" to yes (unfortunatly that parameter is still unexplained SPA-941 docs). I will try with progressinband=no in /user/peer/friend section and post results.

There is another issue with ringing of sip phones, possibly related to this issue: I have mISDN channels setup in NT mode (ISDN phone connected to a *) and when I call extension of that ISDN phone from SPA-941, Swissvoice or Cisco 7912 SIP phones I cannot hear any ringback tone, and on the other hand misdn logs are clearly statinig that chan_misdn has indicated ringing to a Asterisk, as soon as ISDN phone is started to ring.

By: RT (rtorrey58) 2006-03-27 12:07:24.000-0600

progressinband=no has fixed my issue!!


By: Olle Johansson (oej) 2006-03-27 12:15:22.000-0600

Ok, thanks.