Information Technology Reference
In-Depth Information
Digit Manipulation
Digit manipulation is the process of modifying the called or calling party number. It can be configured in many different ways at the
route pattern and route group level or by using the Translation Pattern Configuration screen in CUCM Administration.
Specific types of manipulation include the following:
■
Calling Party's External Phone Mask:
This modifies the calling party number (caller ID).
■
Calling Party Transform Mask:
This can be used to further manipulate the digits for the calling party number (caller ID).
■
Prefix Digits:
This can be used to prepend digits to a calling or called party number.
■
Discard Digits Instructions (DDI):
This can be used to discard dialed digits, such as a leading 9 in outgoing calls.
■
Called Party Transform Mask:
This can be used to change the called number.
Although digit manipulation can be done within a route group, it is applied when the route groups are added to a route list.
Although the configuration of digit manipulation at the route pattern and route group levels has already been discussed in earlier
sections, note that you can also configure calling and called party transformation by navigating to
Call Routing, Translation Pattern
within Cisco CUCM Administration.
Note that when digit manipulation is configured at both the route pattern and route group levels, the manipulation configured at the
route group level has priority over that configured at the route pattern level because it is processed later.
Translation patterns have certain similarities to route patterns and can be used to manipulate the calling or called party numbers prior
to call routing (matching a route pattern, DN, or even another translation pattern).
Translation patterns can also be used to modify other elements, such as calling search spaces.
