04-20-2008 08:31 AM - edited 03-15-2019 10:10 AM
We are testing an AT&T PRI (Gateway is a 2821) which is controlled by UCM 6.0 via MGCP. We are sending the correct digits - verified by a debug isdn q931 - but get the following error: "Cause i = 0x83E020 - Mandatory information element missing". Anyone seen this error or have an idea of what to look for. We have tried a couple different protocols
NI2 and 4ESS along with various parameters on the gateway with no sucess. Thanks!
Solved! Go to Solution.
04-20-2008 09:05 AM
can u post the debug isdn q931 to look at all the IEs you're sending?
javalenc
04-20-2008 09:05 AM
can u post the debug isdn q931 to look at all the IEs you're sending?
javalenc
04-20-2008 09:28 AM
Correction, this is what we're seeing:
Apr 20 03:53:59: ISDN Se0/0/1:23 Q931: TX -> SETUP pd = 8 callref = 0x0009
Bearer Capability i = 0x8090A2
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98397
Exclusive, Channel 23
Calling Party Number i = 0x2181, '3037928854'
Plan:ISDN, Type:National
Called Party Number i = 0xA1, '6126643270'
Plan:ISDN, Type:National
Apr 20 03:53:59: ISDN Se0/0/1:23 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x8009
Cause i = 0x83E020
Sorry, This is all I captured...We tried ISDN, National, International IE's
04-20-2008 10:02 AM
try unknown, unknown
if still no avail id recommend to give a call to the telco to find out what they want. some telcos expect a specific plan and type for the calls
javalenc
04-20-2008 10:07 AM
Thanks. That's just what we'll do tomorrow!
04-20-2008 08:34 PM
Hi,
Have a look at these [might give some clue] -
http://www.cisco.com/en/US/docs/ios/12_2/dial/command/reference/drfisl2.html#wp1017973
>> Sushil
04-30-2008 07:37 PM
Thanks! We tried the "isdn nsf-service sdn" command under the serial interface of the router, but this didn't help with outbound calls. Then we configured the "PRI 4ESS" switch type and "sdn" under the ISDN Parameters [in the long distance route pattern]. That fixed it!
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: