Draytek Vigor 2200VG - 4 Voip Settings

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4. VoIP Settings
Caution The FXS port can be connected to an analog phone only. Do not
connect the FXS port to the telephone wall jack. This connection might damage
your router.
The following is the menu tree of the VoIP configuration.
VoIP >> DialPlan
SIP Related Function
CODEC / RTP / DTMF
Voice Call Status
QoS