Route Pattern meaning

[happyatuni]

Dear NetPro gurus,

I notice on the Cisco CallManager's Route Pattern, i can set different types of symbols other than X or numerical numbers.

Can someone please kindly explain to mean what are the differences between the following symbols and would be greatly appreciated if you could provide some examples also.

Symbol 1 for Route Pattern -     ?

Symbol 2 for Route Pattern -     !

Symbol 3 for Route Pattern -     +

Cheers,

Hunt

[Robert Thomas]

Hi Hunt,

A brief breakdown of what those patterns mean.

? 0 or more occurrences of [0-9]. Like 911? Could Match, 911, 9110, 91100... This is a weird one, not commonly used.

! 1 or more occurrences of [0-9]. Like 900! Could match 90044, 90044124564, This is very commonly used for variable length patterns like international calls.

+ is one or more ocurrences from the last ditit. Like 55+ Could match 555, 5555, 555555

[happyatuni]

Hi Robert,

Thanks so much for your detailed explanation. 

May i ask what's the difference between ? or !

They seems very similar.

Cheers,

Hunt

[Robert Thomas · Accepted solution]

! requires at least one instance or more, ? matches also 0 instances or more.

911? would cause interditgit timeout if you dial 911, but it would match once the timer expires, because it can match 0 instances.

911!  would cause interditgit timeout if you dial 911, but it would NOT match once the timer expires, because it needs to match at least one digit.

[Jonathan Schulenberg]

FYI- This is also well-covered in the product documentation:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_6_1/ccmsys/a03rp.html#wpxref11697