Well, yeah, sorta. LifeSaver is dispatched through TCC, which is operated by BREMSS, which is owned by UAB.
I think it is both. Well, I'm not sure if it is a phone or what, but I believe they have some other means of actually waking up or alerting the lifesaver staff (whether intercom, phone, page, etc.) They also dispatch via southern link and radio: 155.3550
They use to only give out information via the 155.3550 once the helicopter was airborn, but as of a year or so ago, they started dispatching the call out via the radio as well (whether out of necessity or formality, I'm not sure). I'm also not sure if that is their primary means of notification/dispatch now, or if they still use other means. For a Birmingham call out, they usually start their dispatch on the radio "LifeSaver Birmingham scamble, LifeSaver Birmingham scramble.... on scene flight....." and then give details. Its very interesting to listen to. I haven't listend in a while though.
They opperate out of 3 bases. Birmingham (Carraway Hospital), Anniston, and I believe they just opened up a new base in Auburn/Opelika.
Here is their website:
http://www.alabamalifesaver.net
-William