When a call arrives at an agent telephone, the agent hears either ringing or zip tone. What the agent hears depends on how you administer the telephone. Administer the telephone for ringing when an agent uses the handset to answer calls. When a call connects to the telephone of the agent, the telephone rings, and the agent picks up the handset to answer the call. Administer the telephone for zip tone when the agent uses a headset to answer calls. When a call connects, the agent hears one burst of zip tone for calls that are dialed directly to the split extension or the agent extension. The agent can then greet the caller without the need to first push any buttons. You can also administer zip tone for use with a handset, but the agent must hold the handset and listen for the zip tone. Ringing or zip tone is established for each telephone as part of the switch administration process. For more information, see DEFINITY ECS Administrator’s Guide.