Draytek Vigor2830 Series User Manual page 301

Item
Phone List
RTP
Description
Port – there are two phone ports provided here for you to
configure. Phone1/Phone2 allows you to set general
settings for PSTN phones.
Call Feature – A brief description for call feature will be
shown in this field for your reference.
Tone - Display the tone settings that configured in the
advanced settings page of Phone Index.
Gain - Display the volume gain settings for Mic/Speaker
that configured in the advanced settings page of Phone
Index.
Default SIP Account – "draytel_1" is the default SIP
account. You can click the number below the Index field to
change SIP account for each phone port.
DTMF Relay – Display DTMF mode that configured in the
advanced settings page of Phone Index.
Symmetric RTP – Check this box to invoke the function.
To make the data transmission going through on both ends
of local router and remote router not misleading due to IP
lost (for example, sending data from the public IP of remote
router to the private IP of local router), you can check this
box to solve this problem.
Dynamic RTP Port Start - Specifies the start port for RTP
stream. The default value is 10050.
Dynamic RTP Port End - Specifies the end port for RTP
stream. The default value is 15000.
RTP TOS – It decides the level of VoIP package. Use the
drop down list to choose any one of them.
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Vigor2830 Series User's Guide