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| VoIP Settings
SIP Settings
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SIP Registrar/Domain Name
Enter the IP address or server
domain name of the SIP server.
SIP Registrar Port
Enter the port associated with SIP server traffic.
SIP
Proxy Address/Domain Name
Address of the VoIP service
provider SIP proxy server.
SIP
Proxy Port
The TCP port number used by the VoIP service
provider
s SIP proxy server.
Reg Keep Alive I/O Period
The maximum time (in seconds)
between keep-alive messages sent to the SIP register server.
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The SIP Setting page allows you to configure RTP, DTMF, and FAX settings.
Figure 46: SIP Settings
The following items are displayed on this page:
RTP Port
The Real-time Transport Protocol (RTP) and Real-time
Control Protocol (RTCP) do not use specified port numbers. You can
specify a port base that the RTP and RTCP traffic can use.
DTMF Key Pad
Enables the sending of dual-tone multi-frequency
(touch tone) phone signals over the VoIP connection. There are two
methods to choose from:
In-band
The DTMF signals are sent over the RTP voice stream.
In the case when low-bandwidth codecs are used, the DTMF signals
may be distorted.
RFC2833
Uses the RFC 2833 method to relay the DTMF signals
over the RTP voice stream without any distortion.