How to understand partitions and calling search spaces

Unanswered Question
Sep 3rd, 2009

I don't understand the difference between partions and calling search spaces in Cisco Call Manager 4. Anybody can explain me it?. Thanks.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Ayodeji oladipo... Thu, 09/03/2009 - 03:31


Simply put, PT is where you are and CSS is where you are allowed to go. For a DN to be able to call another DN it must have permission to call it and it is CSS that gives it that permission.

EG..DN 3002 with PT_int and CSS_int wants to call DN 5002 with Pt_Long and CSS_long.

The CSS on the DN 3002 which is CSS_int must have the partion of DN 5002 which is PT_long.

Hence the CSS on 3002 must look like this.




So essentially CSS controlles where you can go.

This is a very fundamental aspect of CCM. It affects evrything from IP phones to gateways to CTI ports used for UCCX etc.


rob.huffman Thu, 09/03/2009 - 04:43

Hi Rafael,

Just to add a touch to the great info from my friend deji (+5 points here buddy for this excellent info :)

Here is an excellent reference link;

and this one;

Understanding and Using Partitions and Calling Search Spaces with Cisco CallManager

Hope this helps!



This Discussion