ZyXEL VMG4927-B50A User Guide - Page 211
Before You Begin, SIP Account
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Chapter 21 Voice the network. For example, when you dial a number on your VMG, it sends a SIP message over the network asking the other device (the number you dialed) to take part in the call. SIP Accounts A SIP account is a type of VoIP account. It is an arrangement with a service provider that lets you make phone calls over the Internet. When you set the VMG to use your SIP account to make calls, the VMG is able to send all the information about the phone call to your service provider on the Internet. Strictly speaking, you don't need a SIP account. It is possible for one SIP device (like the VMG) to call another without involving a SIP service provider. However, the networking difficulties involved in doing this make it tremendously impractical under normal circumstances. Your SIP account provider removes these difficulties by taking care of the call routing and setup - figuring out how to get your call to the right place in a way that you and the other person can talk to one another. How to Find Out More See Chapter 4 on page 39 for a tutorial showing how to set up these screens in an example scenario. See Section 21.8 on page 224 for advanced technical information on SIP. 21.2 Before You Begin • Before you can use these screens, you need to have a VoIP account already set up. If you don't have one yet, you can sign up with a VoIP service provider over the Internet. • You should have the information your VoIP service provider gave you ready, before you start to configure the VMG. 21.3 SIP Account The VMG uses a SIP account to make outgoing VoIP calls and check if an incoming call's destination number matches your SIP account's SIP number. In order to make or receive a VoIP call, you need to enable and configure a SIP account, and map it to a phone port. The SIP account contains information that allows your VMG to connect to your VoIP service provider. See Section 21.3.1 on page 212 for how to map a SIP account to a phone port. Use this screen to view SIP account information. You can also enable and disable each SIP account. To access this screen, click VoIP > SIP > SIP Account. Figure 125 VoIP > SIP > SIP Account VMG4927-B50A / VMG9827-B50A User's Guide 211