1.1.4.2.3. Voice Mail
Message Waiting Indication
Service Providers may provide voice mail service to their subscribers. When voice mail is available
for a subscriber, a notification message will be sent from the Voice Mail server to the PHONE
ADAPTER. The PHONE ADAPTER indicates that a message is waiting by, playing stuttered dial tone
(or other configurable tone) when the user picks up the handset.
Checking Voice Mail
The PHONE ADAPTER allows the subscriber to connect to their voice mail box by dialing their
personal phone number.
1.1.4.2.4. Call Transfer
Three parties are involved in Call Transfer: The transferor, transferee, and transfer target. There are 2
flavors of call transfer: Attended Transfer (Transfer with consultation) and Unattended Transfer
(“Blind” Transfer).
Attendant Transfer
The transferor dials the number of the transfer target, then he hangs up (or enters some * or # code)
when the transfer target answers or rings to complete the transfer.
Unattended or “Blind” Transfer
The transferor enters some * or # code and then dials the number of the transfer target to complete
the transfer (without waiting for the target to ring or answer).
1.1.4.2.5. Call Hold
Call Hold lets you put a caller on hold for an unlimited period of time. It is especially useful on phones
without the hold button. Unlike a hold button, this feature provides access to a dial tone while the call
is being held.
1.1.4.2.6. Three-Way Calling
The subscriber can originate a call to a 3rd party while engaging in an active call.
1.1.4.2.7. Three-Way Ad-Hoc Conference Calling
The PHONE ADAPTER can host a 3-way conference and perform 3-way audio mixing (without the
need of an external conference bridge device or service).
1.1.4.2.8. Call Return
The PHONE ADAPTER supports a service that allows the PHONE ADAPTER to automatically dials
the last caller’s number.
1.1.4.2.9. Call Return on Busy
If the last called number is busy, the subscriber can order this service to monitor the called party and
to receive a notification from the PHONE ADAPTER (such as special phone ring) when that party
becomes available.
1.1.4.2.10. Automatic Call Back
This feature allows the user to place a call to the last number they tried to reach whether the call was
answered, unanswered or busy by dialing an activation code.
1.1.4.2.11. Call Forwarding
These services forward all the incoming calls to a static or dynamically configured destination number
based on three different settings. These services may be offered by the PHONE ADAPTER or by the
SIP proxy server. They can be activated by entering certain * or # code, followed by entering a
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