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PRI Dial-out problem

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  • #24807 Reply
    Ahsan Ullah Khan
    Guest

    Hi,
    We have two both way PRIs (E1) connected to 2651 Multiflex trunk E1 with Alcatel Switch at PSTN end. The incoming calls are working fine, but we have problem in dialing out, we got the following cause codes for disconnection from switich:
    Cause i = 0x82BF – Service/option not available, unspecified
    Cause i = 0x8281 – Unallocated/unassigned number
    Can anyone help us out urgently.

    Thanks.

    Ahsan

    For reference following are the debugg q931 output for dial-in and dial-out.

    Dial-in ( it works fine)

    *Mar 4 20:07:57.694: ISDN Se0/0:15 Q931: RX CALL_PROC pd = 8 callref = 0x8014

    Channel ID i = 0xA98391

    Exclusive, Channel 17

    *Mar 4 20:07:57.715: ISDN Se0/0:15 Q931: TX -> CONNECT pd = 8 callref = 0x8014

    *Mar 4 20:07:58.123: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x8014

    *Mar 4 20:08:29.483: ISDN Se0/0:15 Q931: RX SETUP pd = 8 callref = 0x0023

    Bearer Capability i = 0x9090A3

    Standard = CCITT

    Transer Capability = 3.1kHz Audio

    Transfer Mode = Circuit

    Transfer Rate = 64 kbit/s

    Channel ID i = 0xA9839F

    Exclusive, Channel 31

    Calling Party Number i = 0x91, ‘211’

    Plan:ISDN, Type:International

    Called Party Number i = 0x91, ‘730288’

    Plan:ISDN, Type:International

    *Mar 3 23:11:19.536: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0023

    *Mar 3 23:11:20.337: ISDN Se0/0:15 Q931: RX SETUP pd = 8 callref = 0x0025

    Bearer Capability i = 0x9090A3

    Standard = CCITT

    Transer Capability = 3.1kHz Audio

    Transfer Mode = Circuit

    Transfer Rate = 64 kbit/s

    Channel ID i = 0xA9839F

    Exclusive, Channel 31

    Calling Party Number i = 0x91, ‘211’

    Plan:ISDN, Type:International

    Called Party Number i = 0x91, ‘0215889249’

    Plan:ISDN, Type:International

    *Mar 3 23:12:29.475: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0025

    *Mar 3 23:12:30.256: ISDN Se0/0:15 Q931: RX

    #24808 Reply
    Ahsan Ullah Khan
    Guest

    Here is the debug q931 output for dial-out calls, which failed.

    *Mar 3 23:11:19.243: ISDN Se0/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0023

    Bearer Capability i = 0x9090A3

    Standard = CCITT

    Transer Capability = 3.1kHz Audio

    Transfer Mode = Circuit

    Transfer Rate = 64 kbit/s

    Channel ID i = 0xA9839F

    Exclusive, Channel 31

    Calling Party Number i = 0x91, ‘211’

    Plan:ISDN, Type:International

    Called Party Number i = 0x91, ‘730288’

    Plan:ISDN, Type:International

    *Mar 3 23:11:19.536: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0023

    *Mar 3 23:11:20.337: ISDN Se0/0:15 Q931: RX SETUP pd = 8 callref = 0x0025

    Bearer Capability i = 0x9090A3

    Standard = CCITT

    Transer Capability = 3.1kHz Audio

    Transfer Mode = Circuit

    Transfer Rate = 64 kbit/s

    Channel ID i = 0xA9839F

    Exclusive, Channel 31

    Calling Party Number i = 0x91, ‘211’

    Plan:ISDN, Type:International

    Called Party Number i = 0x91, ‘0215889249’

    Plan:ISDN, Type:International

    *Mar 3 23:12:29.475: ISDN Se0/0:15 Q931: RX RELEASE pd = 8 callref = 0x0025

    *Mar 3 23:12:30.256: ISDN Se0/0:15 Q931: RX

    #24809 Reply
    Vurcos
    Guest

    What is the the Information Element of the Progress Indicator? Have you looked and the TON?

    #24810 Reply
    voip123
    Guest

    You can mess around with the TON settings, like Vurcos mentioned. Also, I have seen this problem numerous times.

    Some switches do not like the bearer capability to be 3.1 Khz audio. Under your voice port, please set “bearer speech” Try the call then to see if it works. If it still does not, try adjusting your TON.

    #24811 Reply
    Nitin
    Guest

    Hi,

    I would like to know more about Q931 debug messages.If anyone cud help in this.

    Nitin

    #24812 Reply
    S. Sekou Abodunrin
    Guest

    Since you are getting an error like Cause i = 0x8281 – Unallocated/unassigned number it implies that there is a problem with the syntax that you are using for outbound calls. are you using the e.164 scheme? are you placing your calls with a numbering like 00442073403621?
    when you use this numbering scheme to make outbound calls to other countries i guess that should work.

    Your Cisco gateway needs to be configured to recognise the country code, area code etc this way some digit stripping will occur and the call goes out as expected.

    #24813 Reply
    Rajendra Prasad
    Guest

    when i debugq.931 i recived masg. service/option not available,unspecified(cause i=0x82BF)

    kindly help for the same.

    #24814 Reply
    hitesh
    Guest

    i am unable to dial out through PRI.I am getting error message 488 not acceptable here.
    I am using sip server and audiocodec as mediant

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Reply To: PRI Dial-out problem
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