Cisco Voice Routing Center Version 1.2.1 adds the following features to existing VRC functionality
N-tier hierarchical directory gatekeeper (DGK) configurations - N-tier DGK configuration refers to the ability to configure the H.323 network so that there can be several levels of DGKs in the LRQ forwarding path.
VRC supports N-tier DGKs by using multiple levels of LRQ transit regions.
Enhanced usability - Improvements in usability and responsiveness to the VRC user interface. Improvements include meaningful route descriptions, route reports in text format, automated dial plan cleanup after a delete operation, validation indications for all dial plan entities. Other enhancements include preservation of route names and route scope names after discovery, and the ability to create single dial peer routes.
Data migration for VRC 1.1 to VRC 1.2.1 upgrades - Allows VRC users to retain existing dial plan data through a software upgrade.
Gateway applications - Support for the configuration of call applications and voice dnis-maps on gateways and the configuration of dial-peers to utilize voice applications.
VRC 1.2.1 continues to support integrated operation with Packet Telephony Center (PTC).