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Chapter 10 Phone
P-2304R-P1 Series User’s Guide
122
" To take full advantage of the supplementary phone services available though
the ZyXEL Device's phone ports, you may need to subscribe to the services
from your VoIP service provider.
10.1.3.1 The 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. The ZyXEL Device may interpret manual tapping as
hanging up if the duration is too long
You can invoke all the supplementary services by using the flash key.
10.1.3.2 Europe Type Supplementary Phone Services
This section describes how to use supplementary phone services with the Europe Type Call
Service Mode. Commands for supplementary services are listed in the table below.
After pressing the flash key, if you do not issue the sub-command before the default sub-
command timeout (2 seconds) expires or issue an invalid sub-command, the current operation
will be aborted.
10.1.3.2.1 European Call Hold
Call hold allows you to put a call (A) on hold by pressing the flash key.
If you have another call, press the flash key and then “2” to switch back and forth between
caller A and B by putting either one on hold.
Press the flash key and then “0” to disconnect the call presently on hold and keep the current
call on line.
Press the flash key and then “1” to disconnect the current call and resume the call on hold.
If you hang up the phone but a caller is still on hold, there will be a remind ring.
Table 50 European Type Flash Key Commands
COMMAND SUB-COMMAND DESCRIPTION
Flash Put a current call on hold to place a second call.
Switch back to the call (if there is no second call).
Flash 0 Drop the call presently on hold or reject an incoming call which is
waiting for answer.
Flash 1 Disconnect the current phone connection and answer the
incoming call or resume with caller presently on hold.
Flash 2 1. Switch back and forth between two calls.
2. Put a current call on hold to answer an incoming call.
3. Separate the current three-way conference call into two
individual calls (one is on-line, the other is on hold).
Flash 3 Create three-way conference connection.
Flash *98# Transfer the call to another phone.