This guide includes the AXL, AXL serviceability, extension mobility,
Cisco Web Dialer, and Cisco Routing Rules APIs.
The Cisco Unified Communications Manager AXL implementation allows
applications to modify the Cisco Unified Communications Manager system
Cisco Unified Communications Manager Real Time Monitoring Tool
information, performance counters, and database information exposure occur
through the AXL serviceability API.
The Cisco Extension Mobility Service provides a rich API, which
enables extension mobility on IP phones and allows applications to control
authentication, scheduling, and availability.
The Cisco Web Dialer application enables click-to-dial functionality
by creating hyperlinked telephone numbers in a company directory.
The Cisco Unified Routing Rules XML interface provides an eXtensible
Access Control Markup Language (XACML) based interface for configuring call
routing rules for the Cisco Unified Communications Manager external call
The document is found here: