How to change forwarding number for a device?

Version 1
    This document was generated from CDN thread

    Created by: Eric Webb on 14-01-2013 04:07:25 PM
    I am new to development/automation with UC.   I would like to programmatically update a forwarding number tied to a UC device using a web services call.   Today, as a user, I am accessing the "Cisco Unified CM User Options" page (http://servername:8443/ccmuser/ on our 6.1.5 environment.   I go to User Options -> Device (a CTI Route Point) -> Line Settings and update the number that calls are being forwarded to.  The URL that seems to do the work is "/ccmuser/".
    Is there a web services API that I can use to accomplish this via automation?