Pankaj Bhagchandani G,Pankaj G Bhagchandani G,G Pankaj Bhagchandani G,G Pankaj G Bhagchandani: pANKAJ bHAGCHANDANI Voice over internet protocol ,G pankaj Bhagchandani G,Pankaj G Bhagchandani G, Pankaj G Bhagchandani,

Step 8

Use the debug isdn q931 command to display information about call setup and teardown of ISDN network connections. Use the debug vtsp dsp, debug vtsp session, and debug voip ccapi inout commands to get digit collection information, as shown in the following partial output.

Router# debug isdn q931

Router# debug vtsp dsp

Router# debug vtsp session

Router# debug voip ccapi inout

Aug 18 23:56:20.125: ISDN Se0:23 Q931: RX <- SETUP pd = 8  callref = 0x0226

        Bearer Capability i = 0x8090A2

                Standard = CCITT

                Transer Capability = Speech

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA98381

                Exclusive, Channel 1

        Calling Party Number i = 0x2181, '40855501124'

                Plan:ISDN, Type:National

        Called Party Number i = 0x80, '83101'

                Plan:Unknown, Type:Unknown

Aug 18 23:56:20.133: VDEV_ALLOCATE: 1/1 is allocated

The following lines show the digit collection process, starting with the digit 8:

Aug 18 23:56:28.265: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_dsm_digit_begin_cb: Digit 
begin: 8

Aug 18 23:56:28.265: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_digit_begin: (dstVdbPtr=0x0, 
dstCallId=0xFFFFFFFF, srcCallId=0x6,

The router collects the next digit, 3, followed by 1, 0 and 2:

Aug 18 23:56:30.253: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_dsm_digit_begin_cb: Digit 
begin: 3

Aug 18 23:56:30.253: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_digit_begin: (dstVdbPtr=0x0, 
dstCallId=0xFFFFFFFF, srcCallId=0x6,

    digit=3, digit_begin_flags=0x1, rtp_timestamp=0xFFFFFE70

    rtp_expiration=0x0, dest_mask=0x1)

Aug 18 23:56:30.885: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_dsm_digit_begin_cb: Digit 
begin: 1

Aug 18 23:56:30.885: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_digit_begin: (dstVdbPtr=0x0, 
dstCallId=0xFFFFFFFF, srcCallId=0x6,

    digit=1, digit_begin_flags=0x1, rtp_timestamp=0xFFFFFE70

    rtp_expiration=0x0, dest_mask=0x1)

Aug 18 23:56:31.913: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_dsm_digit_begin_cb: Digit 
begin: 0

Aug 18 23:56:31.913: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_digit_begin: (dstVdbPtr=0x0, 
dstCallId=0xFFFFFFFF, srcCallId=0x6,

    digit=0, digit_begin_flags=0x1, rtp_timestamp=0xFFFFFE70

    rtp_expiration=0x0, dest_mask=0x1)

Aug 18 23:56:33.185: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_dsm_digit_begin_cb: Digit 
begin: 2

Aug 18 23:56:33.185: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_digit_begin: (dstVdbPtr=0x0, 
dstCallId=0xFFFFFFFF, srcCallId=0x6,

    digit=2, digit_begin_flags=0x1, rtp_timestamp=0xFFFFFE70

    rtp_expiration=0x0, dest_mask=0x1)

Aug 18 23:56:33.265: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_report_digit_control: 
digit reporting disabled

Aug 18 23:56:33.265: 
//6/65F920768011/DSM:(0:D):0:112:4386/dsp_stream_mgr_register_disposition: Ev: 
E_DSM_DSP_DTMF_DIGIT_BEGIN Disp: DS

M_DISP_IGNORE

Aug 18 23:56:33.265: 
//6/65F920768011/DSM:(0:D):0:112:4386/dsp_stream_mgr_register_disposition: Ev: 
E_DSM_DSP_DTMF_DIGIT Disp: DSM_DISP_IGNORE

Aug 18 23:56:33.269: //6/xxxxxxxxxxxx/CCAPI/cc_api_call_report_digits_done: 
(vdbPtr=0x639DB450, callID=0x6, disp=0)

Aug 18 23:56:33.269: //6/65F920768011/VTSP:(0:D):0:112:4386/vtsp_get_digit_timeouts: Inter 
digit = 10, Initial digit = 10

Because the router does not have an outgoing dial peer with destination pattern 83102, the call fails and an IEC is generated.

Aug 18 23:56:33.269: %VOICE_IEC-3-GW: AFSAPP: Internal Error (Digit collect failed): 
IEC=1.1.179.10.24.6 on callID 6 GUID=65F92076D10E11D7801100B0640E6622