Prestige 100 and 100IH ISDN Router and Router/Hub

7.3The Flash Key

Flashing means to press the hook for a short period of time (a few hundred milliseconds) before releasing it. On newer telephones, there should be a “flash” key (button) that generates the signal electronically. If the flash key is not available, you can tap (press and immediately release) the hook by hand to achieve the same effect. However, using the flash key is preferred since the timing is much more precise. With manually tapping, if the duration is too long, it may be interpreted as hanging up by the Prestige.

7.4Call Waiting

ISDN Call Waiting allows you to place a call on hold while you answer another incoming call on the same telephone (directory) number.

By default call waiting is enabled on both telephone ports (except France where the default is disabled), but can be toggled on either port from Menu 2.1.

7.4.1 How to use call waiting

The Call Waiting feature on your ISDN line works in exactly the same way as it does on a regular analog line (which almost everyone is familiar with). To put the current call on hold and answer the incoming call, press the flash key after hearing a call waiting indicator tone.

Dropping current call to switch to incoming/holding call.

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.

7.5Three Way Calling

Three Way Calling allows you to add a third party to an existing call. This service must be subscribed from your telephone company.

Advanced Phone Services

7-3

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ZyXEL Communications 100IH manual Flash Key, Call Waiting, Three Way Calling, How to use call waiting