No Ringback Issue (using SIP trunk)

Unanswered Question
Jan 7th, 2010


May I ask for your help?  I am having a "No Ringback" issue with my system.  The call flow is PSTN -> Voice Gateway -> CM 5.1 -> SIP Trunk -> SIP Device.

I already have "progress_ind setup enable 3" command in my voip dial-peers but there's still no ringback.

Thank you.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
rickyhadlocon Wed, 02/10/2010 - 03:05

Thank you.  The SIP trunk in CUCM is connected to Microsoft OCS R2 Mediation Server.  So, The call flow is PSTN -> Voice Gateway (H.323) -> CM 5.1 -> SIP Trunk -> Mediation Server -> Office Communicator Client.

gaudinoluigi Wed, 02/10/2010 - 02:55

Try this command on the dial-peer with problem :

progress_ind alert strip 2


rickyhadlocon Wed, 02/10/2010 - 03:07

Thank you.  However, "progress_ind alert" command is not available in my dial-peer.  I am using a voip dial-peer pointing to my CUCM servers.

My CUCM server is using version while my 3845 voice gateway is using c3845-ipvoicek9-mz.124-23.bin.

Casey Dockry Mon, 01/24/2011 - 13:54

Were you able to find a fix for this issue?  We are experiencing the same problem.

Thank you,


Daniele Giordano Tue, 01/25/2011 - 10:19

Is your gateway controlled by CM via mgcp?
Post the config and the output of "debug voice ccapi inout" during problematic call.



This Discussion