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"Unknown Number" upon connection

Gordon Ross
Level 9
Level 9

I have a QSIG ISDN-30 to a service provider. When making an outbound call, whilst the number is ringing, my phone shows the dialed number. But once the call connects, the phone display changes to "Unknown Number". Below is a "debug isdn q931" for such a call. Any suggestions as to how to have/keep the dialed or connected up displayed on the phone ? I think it's because of something the service provider is sending back to me, but I can't decode the "Facility" messages :-(

GTG

Nov 27 10:31:28: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8  callref = 0x0008

    Bearer Capability i = 0x8090A3

        Standard = CCITT

        Transfer Capability = Speech 

        Transfer Mode = Circuit

        Transfer Rate = 64 kbit/s

    Channel ID i = 0xA18399

        Preferred, Channel 25

    Progress Ind i = 0xA190 - Reserved value 

    Calling Party Number i = 0x0081, '50000'

        Plan:Unknown, Type:Unknown

    Called Party Number i = 0x80, '68983'

        Plan:Unknown, Type:Unknown

    Sending Complete

    Locking Shift to Codeset 4

    Codeset 4 IE 0x31  i = 0x80

    Locking Shift to Codeset 5

    Codeset 5 IE 0x32  i = 0x81

vgway-a01#

Nov 27 10:31:28: ISDN Se0/0/0:15 Q931: TX -> CALL_PROC pd = 8  callref = 0x8008

    Channel ID i = 0xA98399

        Exclusive, Channel 25

Nov 27 10:31:28: ISDN Se0/0/0:15 Q931: TX -> FACILITY pd = 8  callref = 0x8008

    Facility i = 0x9FAA06800100820100A15002013202011330480A0101800101300780053539393939020101400504038090A3A109A00780053638393833820102A40CA00A800535303030300A0103A711800F677233303620546573742028435329

Nov 27 10:31:28: ISDN Se0/0/0:15 Q931: RX <- STATUS pd = 8  callref = 0x0008

    Cause i = 0x81E162 - Message type not implemented

    Call State i = 0x03

vgway-a01#

Nov 27 10:31:38: ISDN Se0/0/0:15 Q931: TX -> FACILITY pd = 8  callref = 0x8008

    Facility i = 0x9FAA068001008201008B0100A115020101020114300D0A01010A010280053539393939

Nov 27 10:31:38: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0006

    Sending Complete

    Bearer Capability i = 0x8090A3

        Standard = CCITT

        Transfer Capability = Speech 

        Transfer Mode = Circuit

        Transfer Rate = 64 kbit/s

    Channel ID i = 0xA9839F

        Exclusive, Channel 31

    Facility i = 0x9FAA068001008201008B0100A12F02010102011530270201010A0101800101A109A007

vgway-a01#80053638393833A311800F677233303620546573742028435329

    Facility i = 0x9FAA06800100820100A1080201000201008400

    Progress Ind i = 0xA190 - Reserved value 

    Calling Party Number i = 0x0083, '50000'

        Plan:Unknown, Type:Unknown

    Called Party Number i = 0x80, '111559999'

        Plan:Unknown, Type:Unknown

Nov 27 10:31:38: ISDN Se0/0/0:15 Q931: RX <- STATUS pd = 8  callref = 0x0008

    Cause i = 0x81E162 - Message type not implemented

    Call State i = 0x03

Nov 27 10:31:38: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8006

    Channel ID i = 0xA9839F

        Exclusive, Channel 31

vgway-a01#

Nov 27 10:31:43: ISDN Se0/0/0:15 Q931: RX <- ALERTING pd = 8  callref = 0x8006

    Channel ID i = 0xA9839F

        Exclusive, Channel 31

    Progress Ind i = 0xA190 - Reserved value 

    Progress Ind i = 0xA192 - Reserved value 

    Progress Ind i = 0x8488 - In-band info or appropriate now available

Nov 27 10:31:43: ISDN Se0/0/0:15 Q931: TX -> ALERTING pd = 8  callref = 0x8008

    Facility i = 0x9FAA06800100820100A1080201010201018400

    Progress Ind i = 0x8488 - In-band info or appropriate now available 

    Progress Ind i = 0xA192 - Reserved value 

    Progress Ind i = 0xA190 - Reserved value

vgway-a01#

Nov 27 10:31:57: ISDN Se0/0/0:15 Q931: RX <- CONNECT pd = 8  callref = 0x8006

    Channel ID i = 0xA9839F

        Exclusive, Channel 31

    Connected Number i = 0x01C3

Nov 27 10:31:57: ISDN Se0/0/0:15 Q931: TX -> CONNECT pd = 8  callref = 0x8008

    Facility i = 0x9FAA06800100820100A1080201020201028400

    Connected Number i = 0x01C3

Nov 27 10:31:57: ISDN Se0/0/0:15 Q931: TX -> CONNECT_ACK pd = 8  callref = 0x0006

Nov 27 10:31:57: ISDN Se0/0/0:15 Q931: RX <- CONNECT_ACK pd = 8  callref = 0x0008

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1 Reply 1

When the call is connected the remote party sends you "Unknown Number" in the CONNECTED NUMBER header:

Nov 27 10:31:57: ISDN Se0/0/0:15 Q931: RX <- CONNECT pd = 8  callref = 0x8006

    Channel ID i = 0xA9839F

        Exclusive, Channel 31

    Connected Number i = 0x01C3

This service is called Connected-Line Identification Presentation (COLP).

Regards.