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New Member

Missing ringback on IP Phones with H323 or MGCP gateway

Hi all,

Does anybody faced ringback issues with CCM 3.2(2c) and a 2600/E1 gateway ?

When an IP-Phone calls a phone connected to a PBX behind the E1 gateway, I do not hear ringback in the IP-phone.

I tried the progress_ind commands in the h323 dial-peers.

Aso the voice rtp send-receive and the voice call send-alert commands.

And MGCP on the router did not resolve my problem...

I'm running 12.2(11T)

Is it a bug ? on CCM ? on the router ? any workaround ?

Thanks for your feedback.

Cheers,

4 REPLIES

Re: Missing ringback on IP Phones with H323 or MGCP gateway

this is what we have on our dial peers for extensions on a pbx

dial-peer voice 4 pots

destination-pattern 6...

direct-inward-dial

port 1/0:15

forward-digits all

and this is what we have for pstn access through our pbx

dial-peer voice 2 pots

destination-pattern 9T

progress_ind alert enable 8

progress_ind progress enable 8

progress_ind connect enable 8

direct-inward-dial

port 1/0:15

forward-digits all

this is through an h323 gateway, though we are on a lower version of ios 12.1(5)T8

hope this helps

Re: Missing ringback on IP Phones with H323 or MGCP gateway

also try this link

http://www.cisco.com/warp/customer/788/voip/ringback.html#ringback2

hope this helps (though it is out to the pstn )

Bronze

Re: Missing ringback on IP Phones with H323 or MGCP gateway

We had the same problem with CCM 3.2 (2a) and a VG200/T1 gateway. We wnet back and compared the programming that we had on the 2600 that we had borrowed from Cisco. We fixed the problem by adding adding lines under MGCP (we are running 12.2(11T). The VG200 now looks like this:

mgcp

mgcp call-agent ALEX 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp package-capability rtp-package

mgcp package-capability sst-package

mgcp default-package dtmf-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

!

mgcp profile default

Good luck.

New Member

Re: Missing ringback on IP Phones with H323 or MGCP gateway

We have the same MGCP config but still have the problem. Any suggestions?

Thanks,

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