VRC uses the Cisco IOS version to determine what command line interface (CLI) it needs to generate to configure a network element. VRC applies the term feature set to capture the dial plan capabilities of a Cisco IOS version.
A VRC feature set is made up of a set of Cisco IOS features and a set of rules on how to apply the Cisco IOS features to the network elements to perform dial plan provisioning for the network.
The VRC 1.2 model supports the following feature sets:
dp1.0 - Supports prefix routing.
dp1.1 - Supports both prefix routing and carrier-sensitive routing. Devices that support dp1.1 support trunk and carrier-based routing enhancements for gateways and gatekeepers.
dp1.2 - Supports all dp1.0 and dp1.1 features plus hierarchical directory gatekeepers and gateway voice applications.
The feature set for the device depends on the Cisco IOS version running on the device.
The following table describes the Cisco IOS versions for gateways (GWs), gatekeepers (GKs), and directory gatekeepers (DGKs) and their corresponding VRC feature set.
Device Type |
VRC Feature Set |
Supported Cisco IOS Version |
GW |
dp1.0 |
Release 12.2(2)XB* |
GW |
dp1.0 |
Release 12.2(2)XA* |
GW |
dp1.0 and dp1.1 |
Release 12.2(2)XU* |
GW |
dp1.0 |
Release 12.2.7* |
GW |
dp1.0 and dp1.1 |
Release 12.2(11)T* |
GW |
dp1.2 |
Release 12.2(13)T* |
GK, DGK |
dp1.0 |
Release 12.2(2)T* |
GK, DGK |
dp1.0 |
Release 12.2(2)XA* |
GK, DGK |
dp1.0 and dp1.1 |
Release 12.2(2)XU* |
GK, DGK |
dp1.0 and dp1.1 |
Release 12.2(11)T* |
GK, DGK |
dp1.2 |
Release 12.2(13)T* |
*Denotes all releases of this Cisco IOS version. For example, Release 12.2(2)XB* means that the network element supports the following Cisco IOS versions: Release 12.2(2)XB1, Release 12.2(2)XB2, Release 12.2(2)XB3, Release 12.2(2)XB4, and all releases following.
Note: If the Cisco IOS version of your device does not match this list, VRC assigns the default feature set dp1.0 to the network element.
Refer to the specific operation you are performing for more information on feature sets.