Monday, 1 December 2014

CSS & Partition



 
Hi All,

  The most basic and complicated topic in CUCM dial-plan is CSS &Partition. When I look at this topic I compare it with Lock (partition) and Key (CSS) and Route Pattern or a DN as a door. Assume CSS as a key chain with different keys as partition.

·        A door without a lock can be accessed by anyone which means: A DN without a partition can be called by anyone.
·        Person with a key can access only doors without lock: A CSS with no partition can call only numbers with no partition.
·        For a lock if you have a key in you keychain you can access that door: If you have partition for a dialed number in your CSS only then you can dial that number.  

Example: 1
DN: 1000
Partition: None
Access: This number can be dialed by anyone, including CSS containing None partition.

Example: 2
DN
Partition
  1000
None
2000
Internal
707-1234
Local
215-783-1234
National
002-213-852-1234
International

User
CSS
Partition
Lift Phone
None
None
Security
CSS_Internal
Internal
Interns
CSS_Local
Internal , Local
Employees
CSS_National
Internal , Local, National
Exicutives
CSS_Long_Distance
Internal , Local, National, International

In this example :
Lift phone can call DN 1000 only.
Security can call 1000, 2000.
Interns can dial 1000, 2000, 707-1234.
Employees can call 1000, 2000, 707-1234, 213-783-1234.
Executives can call 1000, 2000, 707-1234, 213-783-1234, 002-213-852-1234.

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