what information can i get from debug isdn q931 & debug voip ccapi inout

[jhun_puyong]

Hi VoIP Guru\s,

can you explain to me in detail the information I can get if I run the following debug commands on my VG.

debug isdn q931

debug voip ccapi inout

Can it tell me a drop call and reason why it drop?..

Can it tell me there's a voice quality issue present in an active call? How will I deal with a voice quality problem?

Appreciate so much your help.

Thank you

[lavanyaps]

Hi

Using the debug voip ccapi inout command you get the following Call informations in detail, like Calling Number, Called Number,

Incoming Dial-peer, Outgoing Dial-peer, Trunk group lables, ANI (A Number CLI), ANI type and also the CAUSE VALUE.

This Cause Value well help you to identify the reason for call drop..

   cc_api_call_setup_ind_common:

   cisco-username=124.7.7.75.34

   ----- ccCallInfo IE subfields -----

   cisco-ani=61293426423

   cisco-anitype=0

   cisco-aniplan=1

   cisco-anipi=0

   cisco-anisi=0

   dest=61245609888

   cisco-desttype=0

   cisco-destplan=1

   cisco-rdie=FFFFFFFF

   cisco-rdn=

   cisco-rdntype=-1

   cisco-rdnplan=-1

   cisco-rdnpi=-1

   cisco-rdnsi=-1

   cisco-redirectreason=-1

*Jan  6 10:05:33.099: //-1/022A14000FDA/CCAPI/cc_api_call_setup_ind_common:

   Interface=0x651A6D88, Call Info(

   Calling Number=61293426423(TON=Unknown, NPI=ISDN, Screening=Not Screened, Presentation=Allowed),

   Called Number=61245609888(TON=Unknown, NPI=ISDN),

   Calling Translated=FALSE, Subscriber Type Str=Unknown, FinalDestinationFlag=TRUE,

   Incoming Dial-peer=100, Progress Indication=NULL(0), Calling IE Present=TRUE,

   Source Trkgrp Route Label=, Target Trkgrp Route Label=, CLID Transparent=FALSE), Call Id=82

*Jan  6 10:05:33.099: //87/022A25151D1B/CCAPI/ccCallDisconnect:

   Cause Value=63, Tag=0x0, Call Entry(Previous Disconnect Cause=0, Disconnect Cause=63)

*Jan  6 10:05:33.099: //87/022A25151D1B/CCAPI/ccCallDisconnect:

   Cause Value=63, Call Entry(Responsed=TRUE, Cause Value=63)

*Jan  6 10:05:33.099: //87/022A25151D1B/CCAPI/cc_api_get_transfer_info:

   Transfer Number Is Null

Using the debug isdn q31 command, you can identify the layer 3 status of the ISDN link established and

gives you the Call status established with the far end operator using ISDN Protocol.

This also give you the Disconnect cause for the call failure. Refer this link for call failure reason.

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a008012e95f.shtml

20:52:14: ISDN BR0: TX -> SETUP pd = 8 callref = 0x2E 
   20:52:14: Bearer Capability i = 0x8890 
   20:52:14: Channel ID i = 0x83 20:52:14: Keypad Facility i = '5551111' 
   20:52:15: ISDN BR0: RX <- CALL_PROC pd = 8 callref = 0xAE 
   20:52:15: Channel ID i = 0x89

   20:52:16: ISDN BR0: RX <- PROGRESS pd = 8 callref = 0xAE 
   20:52:16: Progress Ind i = 0x8A81 - Call not end-to-end ISDN,
     may have in-band info 
   20:52:16: Signal i = 0x01 - Ring back tone on
   20:52:34: ISDN BR0: RX <- DISCONNECT pd = 8 callref = 0xAE 
   20:52:34: Cause i =0x829F08 - Normal,unspecified or Special intercept,
     call blocked group restriction     
   20:52:34: ISDN BR0: TX -> RELEASE pd = 8 callref = 0x2E 
   20:52:34: ISDN BR0: RX <- RELEASE_COMP pd = 8 callref = 0xAE

Pl rate if the information is useful.

Thanks..

[Muhammad Raza]

Excellent info.

Regards,

Muhammad Amir Raza

[jhun_puyong]

Hi Lavanyaps,

Nice information you have for me, appreciate it much.

Thank you.

[lavanyaps]

Hi jhun

Thanks for your appreciation. Also pls rate if you find the link is useful.. thanks once again..

Regards

Lavanya

[ashrafkhanm]

Nice information !!!!!!

[fwakefield]

Good Information!!!

[R0g22]

You don't get to see a ISDN L3 status with a debug command. Status is checked with either a "show isdn status" or "show isdn service". If either L1 or L2 is bad, your calls won't work which is actually where ISDN L3 comes into picture. There is no actual ACTIVE status for Q.931.