Re: Problem with long distance call

SHAUNA YELVERTON · ‎01-10-2011

We are experiencing problems calling out to China from several different US locations. We are using different carriers at each of those site, but they are

all VoIP calls. The calls are from Call Manager 6.1.5 using MGCP gateways at each of the remote locations.

This is the debug isdn q931 from one of the failed calls.

Jan 10 11:54:13.274 CST: ISDN Se0/0/1:23 Q931: TX -> SETUP pd = 8 callref = 0x0025
        Bearer Capability i = 0x8090A2
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0xA98383
                Exclusive, Channel 3
        Display i = 'Shauna Yelverton'
        Calling Party Number i = 0x0081, 'XXXXXXXXXX'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '01186XXXXXXXXXX'
                Plan:Unknown, Type:Unknown
Jan 10 11:54:13.354 CST: ISDN Se0/0/1:23 Q931: RX <- STATUS pd = 8 callref = 0x8025
        Cause i = 0x82AB28 - Access information discarded
        Call State i = 0x01
Jan 10 11:54:13.402 CST: ISDN Se0/0/1:23 Q931: RX <- CALL_PROC pd = 8 callref = 0x8025
        Channel ID i = 0xE9808303
                Exclusive, Interface 0, Channel 3
Jan 10 11:54:15.254 CST: ISDN Se0/0/1:23 Q931: RX <- PROGRESS pd = 8 callref = 0x8025
        Cause i = 0x82FF - Interworking error; unspecified
        Progress Ind i = 0x8281 - Call not end-to-end ISDN, may have in-band info
Jan 10 11:54:26.306 CST: ISDN Se0/0/1:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x0025
        Cause i = 0x8290 - Normal call clearing
Jan 10 11:54:26.550 CST: ISDN Se0/0/1:23 Q931: RX <- RELEASE pd = 8 callref = 0x8025
Jan 10 11:54:26.702 CST: ISDN Se0/0/1:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x0025

I am able to place a call via VoIP from Mexico to China successfully. This is the debug isdn q931 from that call

Jan 10 12:18:47.541 CST: ISDN Se0/3/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0003
        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
        Calling Party Number i = 0x0081, 'XXXXXXXXXX'
                Plan:Unknown, Type:Unknown
        Called Party Number i = 0x80, '0086XXXXXXXXXX'
                Plan:Unknown, Type:Unknown
Jan 10 12:18:47.977 CST: ISDN Se0/3/0:15 Q931: RX <- CALL_PROC pd = 8 callref = 0x8003
        Channel ID i = 0xA9839F
                Exclusive, Channel 31
Jan 10 12:18:51.805 CST: ISDN Se0/3/0:15 Q931: RX <- ALERTING pd = 8 callref = 0x8003
        Progress Ind i = 0x8A81 - Call not end-to-end ISDN, may have in-band info
        Progress Ind i = 0x8A88 - In-band info or appropriate now available
Jan 10 12:18:51.865 CST: ISDN Se0/3/0:15 Q931: RX <- CONNECT pd = 8 callref = 0x8003
        Progress Ind i = 0x8A81 - Call not end-to-end ISDN, may have in-band info
        Date/Time i = 0x0B010A0B13
                Date (dd-mm-yr)   = 11-01-10
                Time (hr:mnt:sec) = 11:19:29
Jan 10 12:18:51.969 CST: ISDN Se0/3/0:15 Q931: TX -> CONNECT_ACK pd = 8 callref = 0x0003
Jan 10 12:19:01.506 CST: ISDN Se0/3/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x0003
        Cause i = 0x8090 - Normal call clearing
Jan 10 12:19:01.654 CST: ISDN Se0/3/0:15 Q931: RX <- RELEASE pd = 8 callref = 0x8003
Jan 10 12:19:01.870 CST: ISDN Se0/3/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x0003

Any help would be appreciated.

Thanks,

Shauna

Jonathan Schulenberg · ‎01-10-2011

You should ask your carrier what format they expect the DNIS in and whether you must specify the TON. It is possible they do not want to see the 011 prefix and/or want you to set the Type of Number to International. Some carriers also disable international calling if a customer didn't request it at the time of provisioning.

SHAUNA YELVERTON · ‎01-10-2011

Jonathan -

Thank you for your input. We are able to place all other international calls successfully. I have a ticket with the carrier, but was wondering if others have experienced problems with international VoIP calls.