How to understand partitions and calling search spaces

reg_cisco · ‎09-03-2009

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

Ayodeji Okanlawon · ‎09-03-2009

Hi,

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.

CSS_int

PT_Long

PT_int.

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.

HTH

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Rob Huffman · ‎09-03-2009

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;

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/4x/42dialpl_ps556_TSD_Products_Implementation_Design_Guide_Chapter.html#wp1043737

and this one;

Understanding and Using Partitions and Calling Search Spaces with Cisco CallManager

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080094b53.shtml

Hope this helps!

Rob