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Ringback tone Issue on AS5400XM Gateway

Senthil Kumar Sankar
Cisco Employee
Cisco Employee

‎02-15-2011 04:46 PM

Hi

Hi we have AS5400XM where we have E1 PRI terminated to local Mobile Operator.

We have a issue on Ringback tone and Callertune for few numbers.

Here is the scenario

SBC---->AS5400-----e1--->Operator

When i input the command tone ringback alert-no-PI on the POTS dial-peer
I hear the normal Ringback tone for all the phone calls,but for few numbers they have Callertunes,even for those i still hear ringing sound


When i remove the command no tone ringback alert-no-PI on the POTS dial-peer
I am not able to hear the Ringback tone for all the phone calls, but i hear the Callertunes for the respective Mobile Operator Numbers


Please find the below debug isdn q931 logs:

NORINGBACK TONE CALL LOG When no tone ringback alert-no-PI is configured :

000821: Feb 16 05:17:57.795 IST: ISDN Dc7/5 SC Q931: Applying typeplan for sw-type 0x19 is 0x1 0x1, Calling num 04406667
000822: Feb 16 05:17:57.799 IST: ISDN Dc7/5 SC Q931: Applying typeplan for sw-type 0x19 is 0x2 0x1, Called num 27288128037053
000823: Feb 16 05:17:57.799 IST: ISDN Dc7/5 SC Q931: TX -> SETUP pd = 8  callref = 0x2103
Bearer Capability i = 0x8090A3
  Standard = CCITT
  Transfer Capability = Speech 
  Transfer Mode = Circuit
  Transfer Rate = 64 kbit/s
Channel ID i = 0xE1858393
  Preferred, Interface 5, Channel 19
Facility i = 0x9E0100036774640000004C49414D2C0D0A4745412C747273332C30302C312C792C792C312C30343430363636370D0A4743492C30303262336236366564646433333161333263323030303432336532376133360D0A0D0A
Calling Party Number i = 0x91, '04406667'
  Plan:ISDN, Type:International
Called Party Number i = 0xA1, '27288128037053'
  Plan:ISDN, Type:National
000824: Feb 16 05:17:58.211 IST: ISDN Dc7/5 SC Q931: RX <- CALL_PROC pd = 8  callref = 0xA103
000828: Feb 16 05:18:01.811 IST: ISDN Dc7/5 SC Q931: RX <- ALERTING pd = 8  callref = 0xA103
000840: Feb 16 05:18:46.771 IST: ISDN Dc7/5 SC Q931: RX <- PROGRESS pd = 8  callref = 0xA103
Cause i = 0x8293 - User alerting, no answer
000842: Feb 16 05:18:57.271 IST: ISDN Dc7/5 SC Q931: RX <- RELEASE pd = 8  callref = 0xA103

CALLERTUNE heard CALL LOG, When no tone ringback alert-no-PI is configured :

000775: Feb 16 05:17:14.179 IST: ISDN Dc7/5 SC Q931: Applying typeplan for sw-type 0x19 is 0x1 0x1, Calling num 04406667
000776: Feb 16 05:17:14.179 IST: ISDN Dc7/5 SC Q931: Applying typeplan for sw-type 0x19 is 0x2 0x1, Called num 27288128091045
000777: Feb 16 05:17:14.179 IST: ISDN Dc7/5 SC Q931: TX -> SETUP pd = 8  callref = 0x20FE
Bearer Capability i = 0x8090A3
  Standard = CCITT
  Transfer Capability = Speech 
  Transfer Mode = Circuit
  Transfer Rate = 64 kbit/s
Channel ID i = 0xE185838C
  Preferred, Interface 5, Channel 12
Facility i = 0x9E0100036774640000004C49414D2C0D0A4745412C747273332C30302C312C792C792C312C30343430363636370D0A4743492C30303830303032656564393433333161333239313030303432336532376133360D0A0D0A
Calling Party Number i = 0x91, '04406667'
  Plan:ISDN, Type:International
Called Party Number i = 0xA1, '27288128091045'
  Plan:ISDN, Type:National
000778: Feb 16 05:17:14.251 IST: ISDN Dc7/5 SC Q931: RX <- CALL_PROC pd = 8  callref = 0xA0FE
Channel ID i = 0xE985838C
  Exclusive, Interface 5, Channel 12
000780: Feb 16 05:17:16.855 IST: ISDN Dc7/5 SC Q931: RX <- ALERTING pd = 8  callref = 0xA0FE
000781: Feb 16 05:17:16.971 IST: ISDN Dc7/5 SC Q931: RX <- PROGRESS pd = 8  callref = 0xA0FE
Progress Ind i = 0x8188 - In-band info or appropriate now available
000786: Feb 16 05:17:23.679 IST: ISDN Dc7/5 SC Q931: RX <- RELEASE pd = 8  callref = 0xA0FE

When i checked the Vesion of the IOS in AS5400XM, I could see it is

Experimental Version 12.4(20091207:094838)

Does this cause the problem ?? Do i have to upgrade the IOS ??

Regards

Senthil

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2 Replies 2

Daniele Giordano
Level 8
Level 8

‎02-16-2011 11:29 AM

The command "tone ringback alert-no-pi" generates ringback towards the calling party if an alert is received with no PI (Progress Indicators) present. Infact in your first debug no PI messages are present.
In ISDN  PI=0 informs the gateway that "no progress indicator is included".

Callertunes are audio messages played in early-media. They are alternative to the ringback. Infact in your second debug the PI description is "Progress Ind i = 0x8188 - In-band info or appropriate now available".
In ISDN PI=8 informs the gateway that "In-band information or appropriate pattern is now available" and so audio messages can be played.

Check if you have configured these commands:
voice rtp send-recv
voice call send-alert

If the problem remain, please post the gateway config and the output of "debug voice ccapi inout" and "debug ccsip message".

I would see also sip messages. If in the first case (no ringback) the gateway decode ISDN with 180 message + SDP we can use "disable-early-media 180" command. It informs the gateway to ignore the SDP message and provide local ringback.

Regards.

0 Helpful

Senthil Kumar Sankar
Cisco Employee
Cisco Employee
In response to Daniele Giordano

‎02-23-2011 10:23 PM

Hi Daniele

Apologies for the delay. Upgradation of the IOS made everything to work fine

Thanks for you help.

Regards

Senthil

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