[cisco-voip] CUCM pattern matching logic

[Ryan Ratliff]

Likely a bug or typo and your 2XXX with urgent priority wasn't being matched at all.  Urgent Priority on a pattern will always route regardless of alternate matches (T302 will never kick in).

-Ryan

On Apr 25, 2011, at 12:38 AM, Cisco Voip wrote:

Hi all.

 
I am trying to understand call routing logic of cucm.

 
I created 2 route patterns in cucm 7

 
2!
2XXX (with urgent priority)

 
Now when i dialed 2001, i had to wait 15 seconds. The call wasnt routed as i expected. I opened up Troubleshooting cisco ip telephony book, and according to that, i must calculate the possible results each route pattern defines.

 
1) 2! for 2001 = 1000 combinations
2) 2XXX for 2001 = 1000 combinations.

 
Since they were equal, i can understand why urgent priority didnt work (pls correct me here if what i understood is wrong !!)\

 
Now i deleted the above and created 2 new patterns

 
1) 20!
2) 20XX (urgent priority)

 
Now when i dialed 2001, my call went immediately. Why is this so ?? if i calculate the combinations

 
1) 20! for 2001 = 100 combinations
2) 20XX for 2001 = 100 combinations

 
So why second route pattern was selected immediately ???

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