remote start/ alarm identification

I bought a used car from a dealer today and was told that the car has a remote start installed, but the remote was lost.  I know I could tell the brand/model by taking apart the panels under the dash but I thought it would be easier to identify it by the antenna.

The antenna is a box with a plastic(not the skinny metal kind) 3" receiver coming out of it, and it has a blue LED that turns on when the car is off. It also says "call" on the unit.   Any ideas what brand this could be to point me in the right direction? I need to buy the remote for it.. Thanks

Sounds like an Auto-Page 2-way...And if the LED is on solid,it sounds like it is in Valet Mode...For the most part...Remote starts usually are not hidden under the dash...Soooo...a quick gander under the dash for the model # might be the best plan of attack...The call button is like a pager for the inside of the car...Lets say you left your friends in there...They could hit the call button and it alerts you on the remote...!