Phone Features; Algorithms; Other Features - D-Link DPH-80 User Manual

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Dial tone
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Call progress tone
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Ring back tone
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Busy tone
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Call alert (ringing) tone
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Error tone
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DTMF tones for all numeric keys

10.4.3. Phone Features

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MUTE: When pressed the H.323 phone turns off the microphone signal from
the handset but still play voice from other party.
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HOLD: When pressed, the H.323 phone disconnects both microphone and
speaker while connection is kept alive. No voice packets are transmitted from
the D-Link DPH-80 phone. Hold LED is on. User may press again to release
the call. This feature requires support from the remote phone for proper
functioning.
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REDIAL: When pressed, redials last dialed number.
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TRANSFER: Toggle the hook-switch quickly to flash the call. The phone plays
the dial tone. Then dial the new party's number to transfer the call. The H.323
phone transfers the call and plays busy tone. Flashing the hook twice before
dialing the number will restore the call to normal state (to call-active state).
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SPEAKER: One-touch dialing key. When pressed, speaker LED is on and
speaker itself is on while on-hook. If the user off-hooks after dialing or presses
the button again, one-touch operation is terminated, LED and speakers turn
off.

10.4.4. Algorithms

Codecs:
D-Link H.323 phones supports G.711 U/A law, G.723.1, and G.729AB. The
browser configuration allows selecting the codec and their priority.
Voice activity det ction, sil nce suppr ssion, and comfort noise generation. e
can be disabled in the configuration irrespective of the codec being used.
Adjustable Jitter Buffer:
algorithm. It can be disabled and a fixed size jitter buffer can be used instead through
configuration.

10.4.5. Other features

Remo e software upgrade: t
software and restart the phone. The DPH-80 should have been configured with right
TFTP server IP address.
Phone book:
This feature allows the phone to be used without a H.323 server. A set of
10 numbers can be programmed to the phone and the phone will directly contact these
numbers without the help of H.323 server.
Remote diagnosis:
The H.323 will send status and other messages to the log server
configured in the DPH-80. The remote log server should run the server application from
e e
D-Link H.323 phones uses a robust adaptive jitter buffer
A predefined key sequence will download the H.323 phone
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