User manual

Http://www.hybertone.com HT-822P VoIP FXS+PSTN Gateway

DTMF Payload Type is used to carry telephony tones and telephony signals. By using

a distinct dynamic RTP payload type in the same RTP stream as the media, it is

possible to carry DTMF tones, fax-related tones, standard subscriber line tones,

country-specific tones and trunk events.

G） Signaling Qos

4.4.1.5 H.323 Direct Mode

This is the Point to Point mode.

4.4.2 SIP Phone

SIP (Session Initiation Protocol) is a relatively new Internet standard. It is a simple,

low-level protocol for initiating interactive communication sessions between users. These

sessions can involve two or more users. Such sessions include voice, video, chat,

interactive games, and virtual reality.

There are two configuration modes: 1) Single Configuration; 2) Configuration by Line