Voip Settings - Draytek Vigor2500V Series Quick Start Manual

3. VoIP Settings

Hardware Connection
The Vigor2500V/2510V series have one FXS port, the "Phone" port on the rear
panel. As mentioned in previous section 2.1 Hardware Installation, you will have
to connect it to a conventional analog telephone, either corded or wireless
(DECT).
Before you start to talk
SIP is an end-to-end, signaling protocol that establishes user presence and
mobility in VoIP structure. Every one who wants to talk using SIP protocol will
need a SIP Address. The standard format of SIP Address is
<username @ domain name of SIP Registrar >.
It is very similar to a URL so some may call it "SIP URL".
Usually there will be two types of calling scenario, as illustrated below:
1.Calling via SIP Servers
First, the Vigor VoIP routers of yours will have to register to a SIP Registrar by
sending registration messages. Then, both of your calls will be forwarded to
each other by SIP proxy.
If you both register to the same SIP Registrar, then it will be illustrated as below:
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