Question: What is a requirement for a Mobile Station (MS) in Group Receive Mode to perform transactions with the network, excluding short message reception, while adjusted to a Voice Group Call (VGCS) channel?
Option 1: The MS can perform transactions simultaneously while in Group Receive Mode.
Option 2: The MS must leave Group Receive Mode, perform the transaction, and then return to the VGCS channel.
Option 3: The MS is only allowed to perform transactions related to supplementary services without leaving Group Receive Mode.
Option 4: The network will automatically switch the MS to a different mode to facilitate the transaction without interrupting the VGCS.
Explanation: This requirement ensures that mobile stations prioritize the stability and continuity of the Voice Group Call Service. By mandating that the MS leave Group Receive Mode to perform other transactions, the network maintains control and minimizes potential disruptions to ongoing voice group calls, highlighting the importance of mode management in telecom networks for service integrity.