ZyXEL Communications P2000W - Manual (Page 25)

P-2000W_V2 User’s Guide
Chapter 1 Getting To Know Your Prestige 25
You don’t need to know if the recipient’s connection type is an IP, cellular or landline based
service. Your Prestige can call any landline or mobile telephone that a traditional PSTN
telephone can connect to as well the IP telephone network. Calls received from IP telephones
works exactly as you would expect from the traditional telephone service.
Figure 1 SIP Proxy Server Application
The Prestige registers with a SIP proxy server in the following circumstances:
• Your connection uses an IP Telephony Service.
• Your connection is based in a corporate VoIP environment.
1.2.2 Direct IP to IP Calling
Use the Prestige to make a call to the recipient’s IP address without using a SIP proxy server.
Figure 2 IP to IP Calling
1.2.3 Ad-Hoc (Wireless Intercom)
Ad-hoc mode does not require an AP or a wired network. Two or more wireless clients
communicate directly with each other.
• There is no intermediate SIP proxy server
• Use the phone book to directly call to the recipient’s IP address.
• The wireless mode is set to “Ad-hoc”, with the same SSID and channel
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