Dial Plan Support for Overdial
SIP Server provides the ability for internal and inbound calls coming to a Routing Point to remove overdialed digits from DNIS when the dnis-max-length dial-plan rule parameter is specified. Overdialed digits are added to the DNIS_OVER key of AttributeExtensions in T-Library events EventQueued and EventRouteRequest.
Example 1
dial-plan-rule: 0800xxxxxxx!=>1000; dnis-max-length=11
Called number: 080012345670123
Then EventQueued and EventRouteRequest will contain the following attribute values:
AttibuteThisDN: 1000
AttibuteDNIS: 08001234567
AttibuteExtensions 'DNIS_OVER': 0123
Example 2
The dial-plan-rule parameter does not modify the DNIS, except when the dnis-max-length is set.
dial-plan-rule: 5566=>1111
Called number: 5566
Then attributes ThisDN and DNIS in T-Library events will contain the following values:
AttributeThisDN: 1111
AttributeDNIS: 5566
EventQueued and EventRouteRequest will not contain the DNIS_OVER in AttributeExtensions.
Example 3
dial-plan-rule: 5566=>1111;dnis-max-length=2
Called number: 5566
Then attributes ThisDN and DNIS in T-Library events will contain the following values:
AttributeThisDN: 1111
AttributeDNIS: 55
EventQueued and EventRouteRequest will contain the following attribute value:
AttibuteExtensions 'DNIS_OVER': 66
Feature Limitations
- This feature applies to the Dial Plan feature configuration. Configuration with the SIP Feature Server Dial Plan is not supported.
- This feature is not supported for Outbound Predictive calls.
Feature Configuration
To enable this feature, specify the dnis-max-length parameter when you configure the dial-plan rule for your environment.
Parameter: dnis-max-length
Type: Integer
Valid values: 1-22
Description: Defines the maximum length of DNIS in the dial-plan rule. The digits that are in position past the specified length are considered overdialed and removed from DNIS. Overdialed digits are included in the DNIS_OVER key of AttributeExtensions in EventQueued and EventRouteRequest. Any invalid value disables this feature.