Chapter 21 Voice
VMG8924-B10A User’s Guide
259
•Call Return
•Call Hold
• Call Waiting
• Making a Second Call
• Call Transfer
• Call Forwarding
• Three-Way Conference
• Internal Calls
• Call Park and Pickup
• Do not Disturb
•IVR
•Call Completion
•CCBS
• Outgoing SIP
Note: To take full advantage of the supplementary phone services available through the
Device's phone ports, you may need to subscribe to the services from your VoIP
service provider.
21.10.2.1 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. With manual tapping, if the duration is too long, it may be interpreted as
hanging up by the Device.
You can invoke all the supplementary services by using the flash key.
21.10.2.2 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.
Table 122 European 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.
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