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Figure 2 VoIP advanced configuration - physical Port parameters (SIP protocol)
2. Click Apply.
Table 1 describes the advanced parameters used for configuring a VoIP interface based on the SIP protocol.
Table 1 Advanced parameters used for configuring a VoIP interface based on the SIP protocol
Parameter Description
Advanced Profile Parameters(SIP)
Enable Echo
Cancellation
Enables or disables echo cancellation. By default, echo cancellation is enabled.
Enable Subscribe Enables or disables subscription of user rights. When the server type is NGN SIP, this function is disabled.
Silence detection Indicates a silence detection method for a network call. This method is used to detect silence in full-duplex and half-duplex modes,
isolates voice from background noise, and filters out redundant audio data.
Silence detection function controls the global mode in silence compression mode.
Silence compression
mode
Supports 2 modes:
Codec mode: In Advanced User Parameters(SIP), select Silence compression . Then, you can set G.711MuLaw,
G.711ALaw, G.729 and G.722.
Global mode: Select Silence detection, and you can configure all coding/decoding modes.
Fax Transmode Indicates the fax mode, including pass-through and T.38.
Pass-through: The MG encodes the fax signals transmitted by a fax machine according to the voice codec (G.711), and then
coverts such signals into the RTP data packets for real-time transmission over an IP network.
T.38: The MG, through ITU-T T.38, converts the T.30-compliant fax signals transmitted by a fax machine into the T.38
packets for transmission over an IP bearer network.
Fax Switch Mode Indicates the fax switching mode, including negotiation and self-switch. The fax switching mode is selected according to the customer
requirements.
Profile Parameters Indicates the control point parameters. Such parameters are selected according to the softswitch. Generally, the default settings are
adopted.
Software Parameters Indicates the software parameters. Such parameters are selected according to the softswitch. Generally, the default settings are adopted.
Digitmap Short Timer Indicates the short timer of the digitmap. This timer starts up if a number that matches digitmap A is dialed and then matches digitmap
B.
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