This route point should be in a special partition created for this purpose. The partition should only be accessible by the calling search space created for and assigned to the CTI ports for Mobility Manager. Sounds like you have the route point in a partition that is accessible by all phones. Take a look at the following doc.
http://www.cisco.com/en/US/products/ps6567/products_installation_guide_chapter09186a0080645bc0.html
Hope this helps. If so, please rate the post.
Brandon