Draytek Vigor 2200V, User Manual

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VoIP Setup
9-2
better the voice quality, however the CODEC used must be appropriate for
your Internet bandwidth.
The VoIP facilities of Vigor2200V/VG series can provide a cost-saving
alternative to having an additional fixed-line. By using the ITSP (e.g.
DrayTEL , www.draytel.org ) you can also make calls to any regular phone
line too, including mobiles, as well as receive calls from anyone - the call is
carried to your phone via your internet connection so your regular phone
line remains free for other people/calls.
There are two ways for you to make a call to other Vigor VoIP router users;
by dialling their IP address directly on the phone handset or using a SIP
registrar. A SIP server on the Internet enables your router to log its
current location (IP Address) and availability so that other users can call
you on your SIP address (e.g.
98141@draytel.org )
Before you can set up the router for SIP you need to open an account
with a SIP registrar [e.g. IPTEL, DrayTEL (www.draytel.org)].
Our Vigor2200V/VG series firstly apply efficient codecs designed to make
the best use of available bandwidth, but Vigor2200V/VG series also equip
with
automatic QoS assurance . QoS Assurance assists to assign high
priority to voice traffic via Internet. You will always have the required
inbound and outbound bandwidth which is prioritized exclusively for Voice