[cisco-voip] Inbound calls to H323 using CCD over SAF fail with dead air

[Jeffrey Girard]

Just for completeness, I solved the problem.



On the config below (on the H323 GW) I had fatfingered the SIP trunk port.  I had 5050 and it should have been 5060



All is well now



Jeff

________________________________
From: Ryan Ratliff [rratliff at cisco.com]
Sent: Thursday, February 28, 2013 2:43 PM
To: Jeffrey Girard
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Inbound calls to H323 using CCD over SAF fail with dead air

Too bad DNA is no help.  You're going to have to crack open the ccm traces to see what's going on then.

-Ryan

On Feb 28, 2013, at 2:36 PM, Jeffrey Girard <jeffrey.girard at girardinc.com<mailto:jeffrey.girard at girardinc.com>> wrote:

Yeah, DNA does not work with CCD.



Give a block reason of unallocated number.



To confirm, I ran DNA against a number in cluster 2 and it gives the same result, though the call completes correctly.



RTMT shows the pattern 51XX as reachable via SIP to the correct loopback address of the H323.
________________________________
From: Ryan Ratliff [rratliff at cisco.com<mailto:rratliff at cisco.com>]
Sent: Thursday, February 28, 2013 2:28 PM
To: Jeffrey Girard
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Inbound calls to H323 using CCD over SAF fail with dead air

What does Dialed Number Analyzer show for that call?  It will indicate if there are alternate matches and tell you what they are.

If you wait for 15 seconds or so what happens to the call?

-Ryan

On Feb 28, 2013, at 2:06 PM, Jeffrey Girard <jeffrey.girard at girardinc.com<mailto:jeffrey.girard at girardinc.com>> wrote:

Ryan -
    Thanks for the response.



    To be more specific:



    From Cluster 1, I pick up a handset and dial 5100.  That is a phone registered to the CUCME.  Nothing happens.  No progress tones, no drops.  Just dead air.  5100 never rings.  Almost like it was waiting for interdigit timeout.



    Replace the handset and then dial 5101 (another phone registered to the CUCME).  Same thing.



    However, from the CUCME, phone 5100, I can place a call to the Cluster 1 handset.  I can also place the call from the 5101 handset.



    Repeat the procedure for Cluster 2 with the exact same results both ways.





________________________________
From: Ryan Ratliff [rratliff at cisco.com<mailto:rratliff at cisco.com>]
Sent: Thursday, February 28, 2013 1:28 PM
To: Jeffrey Girard
Cc: cisco-voip at puck.nether.net<mailto:cisco-voip at puck.nether.net>
Subject: Re: [cisco-voip] Inbound calls to H323 using CCD over SAF fail with dead air

Can you be more specific in how the calls fail?  Do they complete (both phones ring, answer and go to connected state) but you get no audio or does the call not complete or just drop?

Audio issues are not typically related to call signaling unless the call drops to reorder after ~15 seconds.  They are more commonly simple routing issues between endpoints.

-Ryan

On Feb 28, 2013, at 12:22 PM, Jeffrey Girard <jeffrey.girard at girardinc.com<mailto:jeffrey.girard at girardinc.com>> wrote:

This is a lab network.



I have two CUCM 8.6 clusters using CCD over SAF.  Phones attached to both clusters are able to call back and forth.



I just added a H323 gateway into the mix - running CCD over SAF.  Two phones registered to the CUCME.



Outbound calls from the CUCME to anywhere all succeed.



Inbound calls from anywhere (both clusters) all fail with dead air.



Both RTMTs show that the pattern (51XX) is reachable.



SAF neighbors are all present as they should be.



A debug voice dialpeer on the CUCME shows no activity when a call is placed inbound to the CUCME.



Stripped CUCME config is below.



Any thoughts?



Jeff



voice service voip
 no ip address trusted authenticate
 allow-connections h323 to h323
 allow-connections h323 to sip
 allow-connections sip to h323
 allow-connections sip to sip
 fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
 sip
  bind control source-interface Loopback0
  bind media source-interface Loopback0
!
router eigrp SAF_FORWARDER
 !
 service-family ipv4 autonomous-system 10
!
  topology base
  exit-sf-topology
 exit-service-family
!
!
!
dial-peer voice 1 pots
 description Incoming Call Routing
 incoming called-number .
 direct-inward-dial
!
dial-peer voice 2 voip
 description Incoming Call Routing
 incoming called-number .
 voice-class codec 1
 dtmf-relay h245-alphanumeric
 no vad
!
dial-peer voice 998 voip
 description test dial peer
 destination-pattern ....
 session target saf
 voice-class codec 1
 no vad
!
!
voice service saf
 profile trunk-route 10
  session protocol sip interface Loopback0 transport udp port 5050
 !
 profile dn-block 10
  pattern 1 type extension 51XX
 !
 profile callcontrol 10
  dn-service name CCD
   description CCD over SAF
   trunk-route 10
   dn-block 10
  !
 !
 call
 !
 channel 10 vrouter SAF_FORWARDER asystem 10
  subscribe callcontrol wildcarded
  publish callcontrol 10
 !
!
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