01-22-2009 05:43 AM - edited 03-15-2019 03:41 PM
hi, interesting problem here:
sometimes when dialing out from an ip phone I don't hear a ringback from the called number - sometimes I do. This has no pattern as to numbers etc, it just happened intermittently.
I am on a 2821 ios 12.4 spservices. h323 with local break out over PRI isdn.
my dial peer config for pots is:
dial-peer voice 1 pots
tone ringback alert-no-PI
description *** Outgoing calls to PSTN ***
destination-pattern 9T
progress_ind setup enable 3
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
translate-outgoing calling 2000
incoming called-number .
direct-inward-dial
port 0/0/0:15
any help is resolving this would be appreciated.
Thanks
Rod
01-22-2009 06:07 AM
Generally, the progress_ind alert enable 8 will resolve. Try issuing voice call send-alert in config mode. This may be also be a firmware issue.
01-22-2009 06:35 AM
01-22-2009 06:37 AM
01-22-2009 07:43 AM
Hi, thanks for your reply. I already have that command in place. Re the firmware - do you think its the E1 card firmware or something else..?
My new site is sitting of the back of a 100Mb LES circuit, the building is connecter the the WAN point of entry via a 100Mb PAV link (half duplex connection) the WAN link is a 2Mbps MPLS connection to our central site where the UCM publisher is located - I am starting to think that it might be lost h225 signal packets due to the PAV link running at half duplex.
I activated SRST on the H323 gateway and did not have the problems!!!
01-22-2009 10:19 AM
Hi Rod,
Try this on the pots dial peer:
progress_ind alert strip 8
hth,
nick
01-23-2009 12:51 AM
hi nick,
I tried your command this morning and it stil didn't work.
We are re-locating out WAN link to the building where the LES 100Mb circuit terminates - rulling out the PAV and Duplex issue - I'm hopping this will solve my issue - will post later today if it has.
any other ideal would be welcome.
Thanks..
Rod
01-23-2009 04:26 AM
Hi Nick, I have found the following issue from my debug isdn q931 command:
Rining
*Jan 23 12:18:10.431: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x0, Calling num 8823
*Jan 23 12:18:10.435: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x0, Called num 07949997718
*Jan 23 12:18:10.435: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x008F
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98382
Exclusive, Channel 2
Progress Ind i = 0x8183 - Origination address is non-ISDN
Calling Party Number i = 0x0081, '8823'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '07949997718'
Plan:Unknown, Type:Unknown
*Jan 23 12:18:10.639: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x808F
Channel ID i = 0xA98382
Exclusive, Channel 2
*Jan 23 12:18:16.279: ISDN Se0/0/0:15 Q931: RX <- ALERTING pd = 8 callref = 0x808F
*Jan 23 12:18:23.859: ISDN Se0/0/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x008F
Cause i = 0x8090 - Normal call clearing
*Jan 23 12:18:24.039: ISDN Se0/0/0:15 Q931: RX <- RELEASE pd = 8 callref = 0x808F
*Jan 23 12:18:24.039: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x008F
Not Ringing
*Jan 23 12:19:33.107: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x0, Calling num 8823
*Jan 23 12:19:33.107: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x0, Called num 07949997718
*Jan 23 12:19:33.107: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0092
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98382
Exclusive, Channel 2
Calling Party Number i = 0x0081, '8823'
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '07949997718'
Plan:Unknown, Type:Unknown
*Jan 23 12:19:33.287: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x8092
Channel ID i = 0xA98382
Exclusive, Channel 2
*Jan 23 12:19:38.723: ISDN Se0/0/0:15 Q931: RX <- ALERTING pd = 8 callref = 0x8092
*Jan 23 12:19:47.331: ISDN Se0/0/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x0092
Cause i = 0x8090 - Normal call clearing
*Jan 23 12:19:47.519: ISDN Se0/0/0:15 Q931: RX <- RELEASE pd = 8 callref = 0x8092
*Jan 23 12:19:47.523: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x0092
it looks like the Progress Ind i = 0x8183 - Origination address is non-ISDN line is missing from the debug of the phone that didn't have ringback???
any ideas?
01-23-2009 04:42 AM
That's odd - you're sending ringback in the setup.
What's the full call flow, including protocols and versions of software?
hth,
nick
01-23-2009 06:54 AM
Hi Nick,
We are using spservicesk9-mz.124-9.t7.bin, the phones are using skinny and the voip gateway is h323.
Call flow is
IP PHONE>LES>PAV>MPLS>UCM
All PSTN numbers break out at local gateway
I heard there was a bug in 12.4 with outgoing PSTN problems, I trying downloading 12.3 SPS and it doesn't have the commands for enabling the E1 card ?...
Thanks
Rod
01-23-2009 08:46 AM
Hi Nick,
We moved our WAN connection and it hasn't stopped the problem. ringback is still failing sometimes.
01-23-2009 09:36 AM
I have no idea why you're sending in-band information in a SETUP. It doesn't really make sense.
I would have to read through CUCM traces and dig deeper to figure out why you're doing something like that.
-nick
05-28-2009 05:34 PM
Any ideas on this onoe ever Rob?
I have the same issue on
H.323 -> gatekeeper -> CVP -> gatekeeper -> CCM - > outbound H323 PSTN.
Same thing no ringback and see that progress is being sent in band.. originating is not ISDN.
Anyways ideas would rock
Chad
05-28-2009 11:09 PM
Hi Chad,
I changed the configuration on my pots dial-peer and it fixed my problem.
New config:
dial-peer voice 1 pots
tone ringback alert-no-PI
description *** Outgoing calls to PSTN ***
destination-pattern 9T
progress_ind setup enable 3
progress_ind progress enable 8
progress_ind connect enable 8
port 0/0/0:15
good luck
rod
02-18-2009 01:42 PM
Had a similiar issue - no ringback tones on certain calls (no discernable pattern to the calling party destination). Tried all combinations of 'progress_ind...' to no avail.
Then tried 'tone ringback alert-no-pi' under each of my outbound pots dial-peers and hey-presto - got ringback consistently!
Afterwards found this doc:
"Troubleshooting No Ringback Tone on ISDN-VoIP (H.323) Calls" found under Technology Support>Voice>GW Protocols>Design>Design Technotes
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080094c33.shtml
HTH
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