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CUCM 8.6 can't get inbound and outbound calls

Hi everyone. We have cisco CUCM 8.6 and C2951 router for gateway. We also have E1 for the telco line. It worked perfectly before. But now it can't call outside from the CUCM and also can't call from outside to CUCM. When i call to CUCM main number (telco number) it tells "The number you dialed doesn't dxist". What can i do right now? Where can i start? Could you guys please help

Thanks in advance,

32 REPLIES

CUCM 8.6 can't get inbound and outbound calls

Hi,

Please check the controller & isdn status first. if both are up, collect debug isdn q931 to see who is disconnecting the call.

URL to understand the ISDN disconnect cause codes:

http://www.cisco.com/en/US/tech/tk801/tk379/technologies_tech_note09186a008012e95f.shtml#topic1

in case if the disconnect is not from provider side, we may need to collect other debugs depends on GW type (SIP/H.323/MGCP) and CCM traces

//Suresh Please rate all the useful posts.

Re: CUCM 8.6 can't get inbound and outbound calls

Telco says that it is all working normally at their side. So how can i collect debugs for h323 gateway?

Re: CUCM 8.6 can't get inbound and outbound calls

Hi

Really thanks for your reply. I attached debug output for "debug isdn q931". There are no problem at l1 and l2 level. Could you please check our debug output.

Thanks again

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

Hello

How your GW is being Controlled? Are you using H.323 or MGCP?

What is number is registered at your Call Manager ?


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

We are using H323. From the debug we collected gateway can receive calls from outside and can't forward it to CUCM. So we think it can't connect CUCM via H323. We also delete and reconfigure H323 Gateway on Callmanager. But issue still same. Do you need to check GW configuration?

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

Yeah Sure , Please post Router Config, let me the number range of Extn PHones are registered.

Looking at the Debugs which you have shared Seems like "7676" is not there on your call manager.Do you have this range of number configured and registered?

Dec 17 09:09:14.907: ISDN Se0/0/0:15 Q931: RX <- SETUP pd = 8  callref = 0x0789

        Sending Complete

        Bearer Capability i = 0x8090A3

                Standard = CCITT

                Transfer Capability = Speech 

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA18392

                Preferred, Channel 18

        Calling Party Number i = 0x2183, '94990125'

                Plan:ISDN, Type:National

        Called Party Number i = 0xC1, '70117676'

                Plan:ISDN, Type:Subscriber(local)

Dec 17 09:09:14.907: ISDN Se0/0/0:15 Q931: Received SETUP  callref = 0x8789 callID = 0x329A switch = primary-net5 interface = User

Dec 17 09:09:14.911: ISDN Se0/0/0:15 Q931: TX -> CALL_PROC pd = 8  callref = 0x8789

        Channel ID i = 0xA98392

                Exclusive, Channel 18

Dec 17 09:09:29.911: ISDN Se0/0/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x2 0x1, Calling num 94990125

Dec 17 09:09:29.911: ISDN Se0/0/0:15 Q931: Sending SETUP  callref = 0x0F91 callID = 0x8E94 switch = primary-net5 interface = User

Dec 17 09:09:29.911: ISDN Se0/0/0:15 Q931: TX -> SETUP pd = 8  callref = 0x0F91

        Sending Complete

        Bearer Capability i = 0x8090A3

                Standard = CCITT

                Transfer Capability = Speech 

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA9839B

                Exclusive, Channel 27

        Calling Party Number i = 0x2183, '94990125'

                Plan:ISDN, Type:National

        Called Party Number i = 0xC1, '7676'

Dec 17 09:09:29.971: ISDN Se0/0/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0x8F91

        Channel ID i = 0xA9839B

                Exclusive, Channel 27

Dec 17 09:09:29.975: ISDN Se0/0/0:15 Q931: RX <- DISCONNECT pd = 8  callref = 0x8F91

        Cause i = 0x8281 - Unallocated/unassigned number


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.
Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

Also Let me know the number that you are making a call

1) Outbound Call (Calling and Called number) from CUCM ----GW---PSTN.

2) Inbound Call (Calling and Called number)  from PSTN---GW---CUCM.

Can you please collect one more debug and make one outbound and inbound call specify the calling and called number.


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

Here is our Router config (attached). No we don't have extension number 7676

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

so what is the number ?


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

now we are collecting debug again. Please wait a moment. Thanks for your reply

Re: CUCM 8.6 can't get inbound and outbound calls

Dear Nadeem,

Sorry for late. We collect the new debug (attached). Here calling number is '94990125' and called number is 70117676 (it's telco number for our cucm).

There is no call has received by gateway from CUCM.

Re: CUCM 8.6 can't get inbound and outbound calls

it seems the problem is with

dial-peer voice 11 pots

trunkgroup dealer

destination-pattern 7011T

!

call is received and forwarded again to PSTN this time only 7676

Delete dial-peer or modifiy patern to

destination-pattern 07011T

If you use 0 as a scape pattern for calls to pstn I think you can sumarize all paterns starting with 70 in only one dial-peer which routed to CUCM.

I suppose to you have the gw defined twice, one as MGCP controlled gw and one as sip gw or sip trunk. review incoming calling search spaces

if you can not dial out from cucm side it also must be a css problem.

I don´t understand why you are using MGCP for one e1.

regards

CUCM 8.6 can't get inbound and outbound calls

hi

first of all, check if isdn l1, and l2 layers are up

show controller e1 ( check that it l1 is up an without errors)

show isdn status ( check that l2 is up looking for multiframe stablished)

if both test were fine do the following

terminal monitor

debug isdn q931

make a call from cucm side an verify it is received in gw

make a call from provider side an verify it is received in gw.

also check the DSP status with show voice dsp voice

Re: CUCM 8.6 can't get inbound and outbound calls

Really thanks for your reply. I attached debug output for "debug isdn q931". There are no problem at l1 and l2 level. Could you please check our debug output.

Thanks again

Re: CUCM 8.6 can't get inbound and outbound calls

Hi Fuko,

I think It can receive calls from outside and can't transfer it to CUCM. Also it can't receive any calls from inside of the CUCM side. So where can i start to fix this problem. If you know anything that can help please share. Thanks

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

simply adding no digit strip or forward digit all will do under this dial-peer, since it telco has 70117676, it match destination patter with number 7011T and strip explict match and send reset digit to far end (ie telco).

dial-peer voice 11 pots

trunkgroup dealer

destination-pattern 7011T


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

i just changed the dial-peer to destination-pattern 07011T as fuko said. But it's still same. So how can i change this dial-peer? Could you guys please describe step by step.

Thanks for your kind support

Re: CUCM 8.6 can't get inbound and outbound calls

Also there is still can't call outside (from the CUCM). Do you think this dial-peer causes this?

Re: CUCM 8.6 can't get inbound and outbound calls

I suppose to you want 70117676 reach a cucm extension, at this moment, it seems dial-peer 11 is matched and call is forwarded again to PSTN.

Modify dial-peer 11, both options provided are valid.

disable debugs with undebug all

enable debug ccsip messa

make a call from pstn side

check if sip signaling is displayed and disconnetion cause

check config in cucm side.

how did you configure the gw?

as sip trunk or a sip gw?

As i mentioned before, check incoming calling search spaces

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

for outbound call to PSTN, having said that it matches this dial peer 11 and strip first 4 digit and send 7676 to Telco and where Telco does not have this number, this could be the reason you are getting unallocated and unassigned number.

dial-peer voice 11 pots

trunkgroup dealer

destination-pattern 7011T

no digit-strip or forward digit all   will work in this sceanrio

make this change and test the call.


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

Tried that. But it we got another answer from Telco. Before we changed it Telco says unassigned number. But now it says number you dialed can not be reached at the moment (out of service area or shut down). Just for remainder when we call 70117676 it must connect trunk group main. but dial-peer 11 is for trunk-group dealer.

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

Ok perfect, which mean now calls are hitting to PSTN but to the wrong one. as per th configuration you do not have any dial-peer which pointing out to trunkgroup main.

are you using this dial-peer which is point to trunkgroup dealer for any calls for destination 7011T if not you can change it

dial-peer voice 11 pots

trunkgroup dealer ======> trunkgroup main (and make a test)

destination-pattern 7011T

no digit-strip

or other way would be create another

dial-peer voice XXX pots

trunkgroup main

destination-patter 70117T

no digit-strip

that will also do


Br,
Nadeem 

Please rate all useful post.

Br, Nadeem Please rate all useful post.

Re: CUCM 8.6 can't get inbound and outbound calls

Dear Nadeem,

I just changed dial-peer voice 11 pots to trunk group main. But it is still same.

Re: CUCM 8.6 can't get inbound and outbound calls

I also tried to delete dial-peer 11 pots. But it still says that :

number you dialed can not be reached at the moment

Cisco Employee

Re: CUCM 8.6 can't get inbound and outbound calls

Hi Ayushjav,

Can you share the latest running config of GW ? As rightly said by Nadeem, you are getting disconnect from PSTN for outgoing calls. You are sending called number as 7676 to PSTN.. I think you need to check with PSTN what number do they expect (like 7 digits, 10 digits) and according to that we need to change the dial-peer?

For incoming calls, you can collect below debugs:

debug h225 asn1

debug h245 asn1

Regards,

Piyush

Re: CUCM 8.6 can't get inbound and outbound calls

hi Piyush Jain,

Here is latest sh run for our router.

Re: CUCM 8.6 can't get inbound and outbound calls

which is the cucm ip addres?

192.168.5.1

192.168.1.37

Re: CUCM 8.6 can't get inbound and outbound calls

192.168.5.1

CUCM 8.6 can't get inbound and outbound calls

Dear Fuko,

Very thanks to you for helping me. We restarted the CUCM and it works perfectly. So it is not any configuration related error. But I still don't know what causes this kind of problem. So could you please tell me why it works fine after only restart?

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