@uvatbc - You need to create a telepathy account before you can use your custom CM. You can do this manually for testing. Edit /home/user/.rtcom-accounts/accounts.cfg and add a section for your telepathy account similar to vicar. Reboot your device and if everything else is configured properly the button should come up in contacts.

You can automate installing/verifying/removing telepathy account by adding steps in postinst/postrm scripts. If you need the source code look in vicar-utils.