ZyXEL P-128 User Guide - Page 125

Prestige 128IMH ISDN Modem/ Router/Hub After hearing a Call Waiting indicator tone, simply hang up the telephone and wait for the telephone to ring before answering the incoming/holding call. Notes: An incoming caller receives a busy signal if ♦ You have two calls active (one active and one on hold, or both active using Three Way Calling) already. ♦ You are dialing a number on the B-Channel the incoming caller is attempting to reach, but have not yet established a connection. 9.5 Three way calling The Three Way Call feature allows you to add a third party to an existing call. This service must be subscribed from your telephone company. 9.5.1 How To Use Three Way Calling If you wish to call someone and conference him/her in with an existing call: ♦ Press the flash key to put the existing call on hold and receive a dial tone. ♦ Dial the third party's telephone number. ♦ When you are ready to conference the calls together, press the flash key again to establish a Three Way Conference Call. Note: If you wish to cancel your attempt to establish the conference call because the third party's line in busy or if they don't answer, simply hang-up the telephone and pick it back up after it starts ringing to return to the first caller. To drop the last call added to the three-way-call: Simply press the flash key. The last call that was added to the conference is dropped. To drop yourself from the conference call: Advanced Phone Services 9-3