The GEOTEK Phone Book software is not only an ergonomic phone book application, but also contains a web dialer, caller history, voice mail and applications for Pocket PC or other mobile devices. It installs in minutes on any Asterisk VoIP server and does not interfere with management software, such as Trixbox, PBX Manager, FOP or other popular management tools. It has a cute, ergonomically designed web interface that allows to look up phone numbers and to modify and update the Asterisk caller database, so that callers can be identified by name on all SIP telephones. The most recent incoming calls are listed with caller names up front. Phone numbers may be imported from other applications or even retrieved online via LDAP from Microsoft Exchange or Novell eDirectory servers. By clicking on the telephone number a call can be initiated without the need for MS-TAPI or any client software.