6. Using Additional Features76 ICX (International), issued March 1999 ICX-35-750USING ZIP MODEThe Zip mode feature (CPC version 3.5 or higher) automatically answers calls whenoperating a Key Telephone in headset mode.1. Press the ON/OFF key.2. Press the PROG key and dial 80.ORPress the ZIP key.3. Press the ON/OFF key.To enter or cancel Zip mode