Change outgoing caller id on follow-me calls to a mobile cell from another sip extension?

This is when using a “follow-me” to an external cell phone…

Is there a way to change outgoing caller id on follow-me calls from an internal extension/number?
Example: Normal external caller calling my extension inbound, if I’m out of the office to go to follow-me to my cell, to go out the normal trunk. (works great currently)

What I’d like is that when an In-house caller (another sip phone on the same phone system) calls my extension and gets forwarded to my cell phone through my follow me to use a different trunk, or better year to have a special caller id # and/or name to be associated with it.

Anyone have any good ideas on a way I can accomplish this?