In case of threatening or abusive calls, the agent can see the trunk access code and trunk member number or the caller information on the phone display, unless the caller has presentation restriction enabled. When the agent presses the Emergency key, CS 1000 initiates a no-hold conference with the agent’s supervisor. The supervisor receives a notification about the emergency call and information about the calling agent and answers the call using the Answer Emergency key. To record the emergency call, a customer can configure a tape recorder or maintenance TTY, or both.