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.