CTI Route Point Failure when calling from a PSTN phone

Unanswered Question
Aug 19th, 2009

CTI Route Point Failure when calling from a PSTN phone but works fine when calling from an internal IP phone.



The CUCM version is:

The UCCX Version is:7.0(1)SR03_Build011

Failure Reason:


See attachments for the log of a failed call from PSTN phone and a working call from an IP Phone.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 4.5 (2 ratings)
astanislaus Wed, 08/19/2009 - 22:33

CSS and Partitions have been elimintaed as being the reason already. These are all setup correctly.

The Voice Gateway is a Cisco 3825 and I am trying to get the show tech for that router.

I can call an IP phone from a PSTN phone without any problem, but I when I call the CTI Route Point - Route Port from a PSTN phone I get busy tone.

As I said before IP phone to the same CTI Route Point - Route Port works fine.

Riccardo Bua Thu, 08/20/2009 - 00:20

Hi there,


CallManager believes that either

1) the number you're redirecting to is not in the dial plan or

2) the CTI Port the call is on does not have a proper Calling Search Space to allow it to "see" that number.

I highly suspect the latter. Ensure that all of your CTI Ports have the proper CSS.

If you still have issues after checking that, please open a TAC case for

further analysis.



bastienbertout Tue, 11/09/2010 - 01:22


I meet the exact same problem.

Did you have any help from the TAC ?



astanislaus Tue, 11/09/2010 - 01:42

I will dig up my old cases and see what the resolution was, but no guarantees.

astanislaus Tue, 11/09/2010 - 14:43

The problem turned out to be a CSS issue (Calling Search Space Issue).

The CSS on the gateway couldn’t directly see the partition that the UCCX trigger point was in.

There was a translation pattern in between.

Once the CSS was updated to include the partition of the UCCX trigger points all worked fine.

bastienbertout Tue, 11/09/2010 - 23:52

Thanx a lot for taking the time to bring me this answer.

I met exactly the same problem.

Everything is working great now.




vicen.giles Thu, 11/10/2011 - 03:54

Hello Astanislaus

I had the same problem as you, and yes, the CSS on the gateway ports needs to have the CTI route points partition included. You say there were a translation pattern in between.

If the CSS on the gateway includes more than an single partition the translation pattern (that we use to add a digit prefix on the calling party number) do not work on my system.

Did your translation pattern still works?



This Discussion