[cisco-voip] Problem with 2951 and PRI outbound calls

[Ted Nugent]

Try switching it to DMS-100 as the switch/protocol type, I've had the exact
same symptoms in the past and kicking it to DMS100 resolved it. It took a
ton of research a few years back but for whatever reason providers see NI
in their DMS100 config and it really means NI1 which is not a ratified PRI
protocol but its what the DMS100 protocol was built off.



On Thu, Jun 3, 2010 at 2:13 AM, Steve G <smgustafson at gmail.com> wrote:

> FYI, this is a bug with the Gen2 ISRs.  Contact tac for the special IOS if
> you run into it.
>
>
> On Tue, Jun 1, 2010 at 11:20 PM, Steve G <smgustafson at gmail.com> wrote:
>
>> 1 out of about 5 outbound calls ring once and then drop.  You can hit
>> redial and the call will complete just fine.  Telco switch is a DMS100
>> running ni2.  My equipment is a 2951 with a VWIC2-2MFT-T1/E1.  IOS
>> c2951-universalk9-mz.SPA.150-1.M2.bin
>>
>> I have a colleague with a similar issue who swapped his 2951 out with a
>> 2811 and that cleared up all problems.  Is there something with the 2951
>> that is causing this problem?  We are not having any luck with them.  I have
>> not tried swapping this one out yet.
>>
>> Below is some config snippets that you might want to see and a q931 debug
>> of a call that fails.
>>
>> Thanks in advance!
>>
>> Steve
>>
>>
>>  network-clock-participate wic 0
>> network-clock-select 1 T1 0/0/0
>>
>> isdn switch-type primary-ni
>>
>> controller T1 0/0/0
>>  cablelength long 0db
>>  pri-group timeslots 1-24
>>
>> interface Serial0/0/0:23
>>  no ip address
>>  encapsulation hdlc
>>  isdn switch-type primary-ni
>>  isdn incoming-voice voice
>>  trunk-group PRI 1
>>  no cdp enable
>>
>>
>> 050310: *Jun  1 22:55:57.828 PDT: ISDN Se0/0/0:23 Q931:
>> pak_private_number: Inva
>> lid type/plan 0x0 0x0 may be overriden; sw-type 13
>> 050311: *Jun  1 22:55:57.828 PDT: ISDN Se0/0/0:23 Q931:
>> pak_private_number: Inva
>> lid type/plan 0x0 0x0 may be overriden; sw-type 13
>> 050312: *Jun  1 22:55:57.828 PDT: ISDN Se0/0/0:23 Q931: Sending SETUP
>>  callref =
>>  0x0081 callID = 0x890F switch = primary-ni interface = User
>> 050313: *Jun  1 22:55:57.828 PDT: ISDN Se0/0/0:23 Q931: TX -> SETUP pd = 8
>>  call
>> ref = 0x0081
>>         Bearer Capability i = 0x8090A2
>>                 Standard = CCITT
>>                 Transfer Capability = Speech
>>                 Transfer Mode = Circuit
>>                 Transfer Rate = 64 kbit/s
>>         Channel ID i = 0xA98381
>>                 Exclusive, Channel 1
>>         Progress Ind i = 0x8183 - Origination address is non-ISDN
>>         Calling Party Number i = 0x2181, 'Snipped'
>>                 Plan:ISDN, Type:National
>>         Called Party Number i = 0xA1, 'Snipped'
>>                 Plan:ISDN, Type:National
>> 050314: *Jun  1 22:55:58.064 PDT: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd
>> = 8
>> callref = 0x8081
>>         Channel ID i = 0xA98381
>>                 Exclusive, Channel 1
>> 050315: *Jun  1 22:55:58.072 PDT: ISDN Se0/0/0:23 Q931: RX <- CALL_PROC pd
>> = 8
>> callref = 0x8081
>>         Channel ID i = 0xA98381
>>                 Exclusive, Channel 1
>> 050316: *Jun  1 22:55:59.864 PDT: ISDN Se0/0/0:23 **ERROR**: L2_AdvanceVA:
>> TX_ac
>> k_queue empty
>> 050317: *Jun  1 22:55:59.864 PDT: ISDN Se0/0/0:23 Q931: RX <- ALERTING pd
>> = 8  c
>> allref = 0x8081
>>         Progress Ind i = 0x8088 - In-band info or appropriate now
>> available
>> 050318: *Jun  1 22:55:59.864 PDT: ISDN Se0/0/0:23 Q931: TX -> STATUS pd =
>> 8  cal
>> lref = 0x0081
>>         Cause i = 0x80E0 - Mandatory information element missing
>>         Call State i = 0x01
>> 050319: *Jun  1 22:55:59.876 PDT: ISDN Se0/0/0:23 Q931: RX <- ALERTING pd
>> = 8  c
>> allref = 0x8081
>>         Progress Ind i = 0x8088 - In-band info or appropriate now
>> available
>> 050320: *Jun  1 22:55:59.912 PDT: ISDN Se0/0/0:23 Q931: RX <- DISCONNECT
>> pd = 8
>>  callref = 0x8081
>>         Cause i = 0x80EF - Protocol error; unspecified
>> 050321: *Jun  1 22:55:59.912 PDT: ISDN Se0/0/0:23 Q931: TX -> RELEASE pd =
>> 8  ca
>> llref = 0x0081
>>         Cause i = 0x80E0 - Mandatory information element missing
>> 050322: *Jun  1 22:55:59.964 PDT: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP
>> pd =
>> 8  callref = 0x8081
>>
>
>
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