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

[Steve G]

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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