Mission Focus: "Break on Through" focuses on infiltrating a Soviet base in Laos. There's no in-game mechanic for transferring calls between characters. Communication happens through dialogue and cutscenes.
Gameplay Mechanics: Afghanistan Phone Number List You control Bell or Adler directly, engaging in combat and completing objectives. No phone calls are involved.
Possible Misunderstanding:
There might be some confusion due to the mission offering choices where you disobey Adler's instructions. Perhaps you're wondering if that could be seen as a metaphor for a "cold transfer" of control.
However, this is more a case of player agency within the story than anything related to phone calls.
Overall:
"Cold transfer" is a real-world phone communication practice not relevant to the gameplay or story of "Break on Through" in Black Ops Cold War.