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New Member

Cisco 2431 IAD Call Waiting and Conference Calling

I am trying to get this 2 features working correctly using SIP FXS config but having some issues.

Call waiting: I receive the alert tone on the incoming call and I'm able to do a flash-hook to answer.  Problem is when I flash-hook a second time to go back to the first call I remain on the second call.

Conference:  When all 3 calls are connected, the second party called from the IAD does not hear any audio from the subscriber on the IAD. All other call legs are ok.

Thanks for any insights.  See attached config.

Cisco Employee

Re: Cisco 2431 IAD Call Waiting and Conference Calling

Can you please collect the following debugs for both problems.

debug vpm signal

debug voip ccapi inout

debug ccsip message

Please note the calling/called/transfer numbers involved in the calls.

Also, what type of SIP registrar/proxy is being used?


New Member

Re: Cisco 2431 IAD Call Waiting and Conference Calling

I now have Call Waiting working after a config change in my switch.  Conference call is still an issue.  The scenario is below.  I am connecting to a MetaSwitch softswitch. I've also attached the debugs you requested. Thanks for your help.

a.       6102354312 (IAD Line) calls 6102354090  (good 2 way conversation)

b.      6102354312 flash-hook

c.       6102354312 calls 4847961465 (good 2-way conversation)

d.      6102354312 flash-hook to join calls

e.      Between 6102354312 and 6102354090 (good 2-way conversation)

f.        Direction 6102354312 to 4847961465 (no audio)

g.       Direction 4847961465 to 6102354312 (good audio)

h.      Between 6102354090 and 4847961465 (no audio both directions)