Here is the Unions guidance from Febuary.

"Contract Compliance Committee - Reserve
The Contract Compliance Committee wants to be abundantly clear on what is and isn't required of you while sitting RAP as a reservist.



First the not so obvious. There is no contractual requirement that you be in domicile (at the airport at which you are based) when sitting on a Reserve Availability Period. You are required to return a phone call, within 15 minutes per Section 12.C.3. This phone call in turn must comply with the requirements set forth by Section 29.R, which states:



When contacting a pilot, Crew Scheduling must include the reason for the call and any assignment, to include the sign in time and duration of the sequence, when leaving a voice message for a pilot. Example: Crew Scheduling is calling to notify a reserve for a three-day trip assignment that signs in at 9am, or a change in sign-in time, or a cancelation of a flight, or an involuntary junior man overnight trip that signs in a 4 pm.



So long as scheduling's message complies with Section 29.R, you are subject to receiving a missed assignment should you fail to comply with the 15-minute call back window, or report time applicable to your domicile.



Again, there is no contractual or FM1 requirement that you live in domicile. Additionally, neither the contract nor FM1 specify what mode of transportation is utilized to satisfy the 2-hour (or 3-hour) callout. Should you choose to sit in Boston airport at Legal Seafood for any one of the 30 daily flights to NY, as long as you make the callout time, there is absolutely no basis for management concern, nor is there any.



As an additional note, if you are released for the day at noon, and receive a phone call to confirm your next day proffer or assignment at 8pm, you are not required to answer that phone or return their call. Once you are released that is your time off, and your time to rest. It belongs to you to do with what you please.



That said, please be cognizant of your CBA and its requirements."