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Overview 
The LIPZ4 is a soft phone that runs on the Linux operating system. By using SIP for the call control, the LIPZ4 is
compatible with other soft phones, IP phones, and IP phone systems or networks. When used with a speaker or headset and a microphone on your PC, the LIPZ4 is a cost efficient and
convenient way to provide telephone communication. Use it within the enterprise to turn Linux desktops into telephones. Use it over the Internet to save money on long distance
calls. The LIPZ4 can communicate point to point with another SIP endpoint or with a SIP application server or gateway.
Making and Receiving Calls
The LIPZ4 has four call appearances, allowing you to maintain four voice conversations. Each call appearance is
treated as a separate call, giving you the power to make and receive multiple simultaneous calls. You can specify destinations by IP address, SIP address, or regular telephone
number.
The software includes a wide selection of standard ring tones, or you can configure custom tones by specifying the URL of a WAV file. You can also specify a second call tone, which is
played when a subsequent call arrives while you are on an existing call.
Instant Messaging
With the LIPZ4, you can send and receive instant messages with other SIP soft phones, applications, or devices. Incoming messages are
queued and deleted as desired. Outgoing messages can be queued for sending later. There is instantaneous indication of an new incoming messages, which is
removed after you review the message. Instant messaging on the LIPZ4 This can significantly increases your productivity and saves on bandwidth whenever a full voice conversation
is not required.
Handling Calls
The LIPZ4 provides standard PBX functionality. You can transfer a call, put a call hold, forward all calls, or recall a number from
the call log. When used within the enterprise with a SIP based system, the LIPZ4 provides you with a fully functional phone. When used to communicate point to point with other
soft phones (mesh configuration) you can obtain basic PBX functionality with a community of users.
Address Book
The address book holds 100 addresses that can be IP addresses, SIP addresses, or phone numbers. Quick access to these addresses
provide a convenient dialling option. The call log presents a list of the last 32 numbers dialled out and the last 32 calls received. Each entry in the log displays the date and
time stamp and the caller ID.
Voice Mail Indication
When used with a SIP based phone system, the LIPZ4 provides message waiting indication for new voice
messages. The indication is removed whenever you save or delete all your new messages.
Other Functions
You can dial and control functions using the keyboard or the mouse. Quick access to mute and volume control adds flexibility for personal preferences. The calculator mode provides a convenient tool for use
when idle or on a phone call.
Compatible Operating Systems
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