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

Index

DTMF Method

Payload Type

VAD

Home > VoIP > Telephony

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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D-Link DVG-1402S manual Home VoIP Telephony, Index Dtmf Method Payload Type
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DVG-1402S specifications

The D-Link DVG-1402S is a versatile voice gateway designed to empower small to medium-sized businesses with seamless voice over IP (VoIP) communication. This device integrates traditional telephony with modern Internet Protocol (IP) technologies, offering a significant upgrade from conventional phone systems.

One of the main features of the DVG-1402S is its dual functionality as both a VoIP gateway and a router. It enables users to connect standard analog telephones to a VoIP network, thus converting existing telephone systems into a more cost-effective solution. This feature is particularly beneficial for businesses looking to maintain their current telephony setup while transitioning to VoIP.

Equipped with two FXS (Foreign Exchange Subscriber) ports, the DVG-1402S allows connectivity to two analog phones, ensuring that users can make and receive calls through the VoIP service without the need for additional hardware. The device supports a variety of signaling protocols, including SIP (Session Initiation Protocol), enabling compatibility with a wide range of VoIP service providers.

The DVG-1402S also boasts advanced QoS (Quality of Service) features that prioritize voice traffic over data, ensuring clear and uninterrupted voice calls even during peak internet usage. This characteristic is crucial for businesses that rely heavily on VoIP communication, as it enhances call quality and reduces latency.

In addition, the device supports multiple codecs including G.711, G.723, and G.729, providing flexibility in bandwidth usage. Users can select the codec that best fits their internet connection and call quality requirements, optimizing performance based on their specific needs.

The DVG-1402S includes an easy-to-use web-based management interface for configuration and troubleshooting, making it user-friendly for both IT professionals and average users. Furthermore, it features built-in security measures such as encryption and firewall capabilities to protect voice communications from potential threats.

In summary, the D-Link DVG-1402S is a comprehensive VoIP solution that combines functionality, performance, and ease of use. With its ability to integrate with existing telephony systems, support for various protocols and codecs, and advanced QoS features, it stands out as a reliable choice for businesses looking to enhance their communication infrastructure with VoIP technology. Its versatility makes it a valuable asset for any modern office environment.
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