SIP Advance
□SIP Port Number - Assign the SIP port number of R7141-L1/R7121-L1/R7111-L1., default setting is 5060.
□Media Port Start - The starting range of port for RTP . Port number for initial of sending RTP packet.,
default setting is 9000.
□Packetization: Select the voice codec packetization interval in milliseconds. The default is 20 ms. This is
used to minimize loss that happens during transmission of voice data over the network.
□DTMF Setting - you can setup the RFC2833 Out-Band DTMF, Inband DTMF and Send DTMF SIP Info in this
page. To change this setting, please follow your ISP information. When you finished the setting, please
click the Submit button.
□RFC2833 Payload Type - Sending the DTMF tone as a RTP payload signal. The RFC2833 signaling
□SIP INFO Payload Type - Sending the DTMF tone as a RTP payload signal. The SIP INFO signaling
□PCM Type - Sending the DTMF tone as a RTP payload signal. The Inband DTMF signaling
□SIP INFO Duration (ms) - Modify SIPINFO duration time.
□Call Waiting - Call Waiting Setting function: If user doesn’t want to be inform there is a new incoming call,
user can set the function off.
□DNS Server: Select Enable to have the R7141-L1/R7121-L1/R7111-L1 Device query your ISP’s DNS server
for a list of any available SIP servers that it maintains. This is useful if your static SIP server exercise
difficulties, making it hard for you to make SIP calls.
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