D-Link DVG-1402S manual Home VoIP Telephony, Index DTMF Method Payload Type VAD

The Router can be configured to handle voice signals over the Internet Protocol (Voice Over IP − VoIP).

Index

DTMF Method

Payload Type

VAD

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Use this field to assign line 1 or line 2 telephone sockets (on the back of the router) to the information entered in the User Agent.

Out-of band Dual Tone Multi-frequency -The Dual Tone Multi-frequency (DTMF) mode sets how the router will handle the tones that your telephone makes when you push its buttons. It is recommended that you use the same mode that your VoIP service provider uses. Select RFC 2833 to send the DTMF tones in RTP packets. Select Inband to include the DTMF tones in the voice data stream. This method works best when you are using a codec that does not use compression (like G.711). Select INFO to transmit DTMF tones out-of-band.

A payload type is a number from 96 through 127 that identifies the type of payload carried in the packet. For example, a payload type of 122 denotes a fax payload. This field is only active when the DTMF method is set to RFC 2833.

Voice Activity Detection (VAD) -detects whether or not speech is present. This reduces the bandwidth that a call uses by not transmitting “silent Packets” when you are not speaking.

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