A feasible idea on paper but less so in reality. Reasons:
1. Hand over label and wait for acceptance. Phone rings or attention is diverted to something else on screen. Acceptance of label not noticed. Call from receiving sector, "Got the label, can I have the comms?"; "Oh sorry, Ok."
2. Hand over label and wait for acceptance. Flashing label is outside of (very quiet) accepting sector's screen view. (Range settings). Call to receiving sector, "You doing nothing, take the damn label."; "Oh sorry, Ok."
3. Sector is very busy. Traffic from adjoining FIR/APP (no label handover function) checks in. Self explanatory.
Solution: Get rid of the label and voice at same time, if receiving unit is busy he/she will do one of two things. Ignore or "Standby". Pretty much what happens during point 3 above.
The actual reason for the label handoff denotes transfer of
control. In the absence of a fixed 'transfer of control' point, the handoff and acceptance of the radar label indicates a relinquishing and acceptance of control over the traffic. So, if the pilot calls you and no label was received it will indicate an erroneous call and should not be viewed as a handoff before establishing the intentions of the previous sector.
Caveat: ATC101. Clean handoffs. No exeptions.
On a side note ref. procedures. Never write a procedure to protect the weakest link. Otherwise, great job dude
.