12-19-2007 10:21 AM - edited 03-15-2019 07:52 AM
Hi,
I am having a CCM 5.1 with a H.323 gateway for PSTN calls. Whenever a call to PSTN is busy or not available, I am getting a long ring kind of sound instead of busy tone. I can see sometimes provider is sending me "User busy tone", but I am not getting busy tone in my phone.
Here is the output of "debug isdn q931".
*Dec 17 12:24:16.269: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 i
s 0x0 0x1, Calling num 4467421006
*Dec 17 12:24:16.273: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 i
s 0x0 0x0, Called num 9940411463
*Dec 17 12:24:16.273: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x104D
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA9839C
Exclusive, Channel 28
Progress Ind i = 0x8183 - Origination address is non-ISDN
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
Calling Party Number i = 0x0181, '4467421006'
Plan:ISDN, Type:Unknown
Called Party Number i = 0x80, '9940411463'
Plan:Unknown, Type:Unknown
*Dec 17 12:24:16.313: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x
904D
Channel ID i = 0xA9839C
Exclusive, Channel 28
*Dec 17 12:24:16.413: ISDN Se0/0/0:15 Q931: RX <- ALERTING pd = 8 callref = 0x9
04D
Progress Ind i = 0x8488 - In-band info or appropriate now available
*Dec 17 12:24:16.565: ISDN Se0/0/0:15 Q931: RX <- PROGRESS pd = 8 callref = 0x9
04D
Progress Ind i = 0x8A81 - Call not end-to-end ISDN, may have in-band inf
o
Progress Ind i = 0x8A88 - In-band info or appropriate now available
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
*Dec 17 12:24:24.957: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8 callref = 0
x904D
Cause i = 0x82FF - Interworking error; unspecified
Progress Ind i = 0x8288 - In-band info or appropriate now available
*Dec 17 12:24:24.957: ISDN Se0/0/0:15 Q931: call_disc: PI received in disconnect
; Postpone sending RELEASE for callid 0x8FCE
VG-SIR-N4102#
VG-SIR-N4102#
VG-SIR-N4102#
Please help how to resolve this issue.
I think the following message"Q931: call_disc: PI received in disconnect
; Postpone sending RELEASE for callid 0x8FCE
" is creating the problem.
Thanks,
Manu
12-27-2007 06:45 AM
In-band progress tones (for example, ringback and busy tones) and announcements (for example, "The number you have dialed is no longer in service") are required to successfully signal voice calls. Progress tones can be generated by the originating, terminating or intermediate devices.
The indication of in-band tones and announcements is controlled by the Progress Indicator (PI) information element (IE) in ISDN and H.323 networks. The PI signals those interworking situations where in-band tones and announcements must be used. In the context of this document, these are the ITU Q.931 PI values of interest:
PI = 1Call is not end-end ISDN. Further call progress information might be available in-band.
PI = 2Destination address is non-ISDN.
PI = 3Origination address is non-ISDN.
PI = 8In-band information or an appropriate pattern is now available.
The indication that tones and announcements are available is signaled by an Alerting, Call Proceeding, Progress, Connect, Setup Ack or Disconnect message that contains a PI = 1 or 8.
http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a0080111b58.shtml
collect more information by debug.
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080207ec6.shtml
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