Free Linux Soft Phone Released

Linux users finally have a full-featured SIP soft phone of their own. Zultys Technologies' LIPZ4 is based entirely on open standards, possesses a slew of valuable features and, best of all, is free to download.

Linux users finally have a full-featured SIP soft phone of their own.

Zultys Technologies, a Sunnyvale, Ca.-based manufacturer of enterprise telecommunications products, has released the LIPZ4 SIP Soft Phone, a feature-rich Linux-based internet software phone the company says is compatible with any IP phone system.

The LIPZ4, which is available as a free download from the company's web site, is based entirely on open standards, and includes the following features:

  • Four call appearances;
  • Address book (100 entries);
  • Voice mail indication;
  • Dial by IP address, SIP address, or number;
  • Instant messaging;
  • Custom ring tones;
  • Separate ring tones for primary and subsequent calls;
  • Transfer, Hold, Forward, Redial;
  • Message waiting indication;
  • Mute and volume control;
  • Operate using keyboard or mouse;
  • Calculator;

Additional features, such as a low bandwidth codec (G.729), “do not disturb,” conferencing and AES compression, are available by purchasing a license from Zultys.

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