Draytek Vigor2100 manual VoIP Settings for V models Hardware Connection, Calling via SIP Servers

4. VoIP Settings (for V models)

Hardware Connection

The Vigor2100VG/V 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

display name<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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