Patent 7242760 was granted and assigned to Intel on July, 2007 by the United States Patent and Trademark Office.
An arrangement is provided for enhancing the operational capabilities of a call center by automatically detecting when an agent is available. When an agent answers a routed call, corresponding to a call-back request, the agent enters an agent ID, representing the agent. The entered agent ID is encoded into DTMF tones. A telephony server detects the DTMF tones.