ZyXEL Communications PX7511-B0, User Manual

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Chapter 1 Introducing the Zyxel Device
PX7511-B0 User’s Guide
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1.2.3 VoIP Application
The Zyxel Device’s VoIP function allows you to register up to 2 SIP (Session Initiation Protocol) accounts
and use the Zyxel Device to make and receive VoIP telephone calls. The Zyxel Device sends your call to
a VoIP service provider’s SIP server which forwards the calls to either VoIP or PSTN phones.
Figure 3
VoIP Application
1.3 Ways to Manage the Zyxel Device
Use any of the following methods to manage the Zyxel Device.
• Web Configurator. This is recommended for management of the Zyxel Device using a (supported)
web browser.
• Simple Network Management Protocol (SNMP). Use for collecting and organizing information about
the Zyxel Device and for modifying that information to change the Zyxel Device behavior.
• Secure Shell (SSH), Telnet. Use for troubleshooting the Zyxel Device by qualified personnel.
• FTP. Use FTP for firmware upgrades and configuration backup/restore.
1.4 Good Habits for Managing the Zyxel Device
Do the following things regularly to make the Zyxel Device more secure and to manage the Zyxel
Device more effectively.
• Change the WiFi and Web Configurator passwords. Use a password that’s not easy to guess and that
consists of different types of characters, such as numbers and letters.
• Write down the passwords and put it in a safe place.
• Back up the configuration (and make sure you know how to restore it). Restoring an earlier working
configuration may be useful if the device becomes unstable or even crashes. If you forget your
password, you will have to reset the Zyxel Device to its factory default settings. If you backed up an
earlier configuration file, you would not have to totally re-configure the Zyxel Device. You could
simply restore your last configuration.