D-Link DPH-80 Manual - Page 28
Calling Features, REDIAL, TRANSFER, SPEAKERPHONE, CALL WAITING
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Using Media Gateway Control Protocol (MGCP) Using the MGCP Phone Calling Features MUTE: When pressed, the MGCP phone turns off the microphone signal from the handset but still plays voice from the other party. HOLD: When pressed, the MGCP phone disconnects both microphone and speaker while the connection is kept alive. No voice packets are transmitted from the D-Link MGCP phone. The hold LED is on. The user may press the button again to release the call. This feature requires support from the remote phone for proper functioning. REDIAL: When pressed, the phone redials last dialed number. TRANSFER: Toggle the hook-switch quickly to flash (transfer) the call. The MGCP phone plays a dial tone. Then enter the party to transfer the call by the general dialing method. The MGCP phone transfers the call and plays a busy tone. Flashing the hook twice before dialing the number will restore the call to the normal state (to call-active state). SPEAKERPHONE: One-touch dialing key. When pressed, the speaker LED is on and speaker itself is on while on-hook. If user off-hooks after dialing or presses this button again the one-touch operation is terminated,and the LED and speaker are both turned off. Note: This is not a true speakerphone, but is designed to allow one-touch dialing. Although the other party can hear through the speakerphone, the voice quality is very poor. CALL WAITING: The call-waiting tone will be played whenever a new party calls while a call is in progress. By pressing the hook-switch the MGCP will switch to the incoming call. Pressing again will switch between two parties. 28
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