SIP is the Session Initiation Protocol. Many VOIP phones use SIP. The other standard is H.323. You need a phone which talks SIP or H.323 to use VOIP. You have the following options: 1) Get an adapter like the Linksys PAP-2T (actually developed by Sipura which they bought). You connect the PAP-2T to your LAN switch. You connect your ordinary phones (max of 2) to the PAP-2T. You can then use your ordinary phones to do VOIP. 2) You can get a VOIP phone from Linksys and other vendors. 3) You can get a softphone -- that is a software based telephone. I use the Xten softphone on my Linux desktop. You can download it from http://www.counterpath.com/index.php?menu=download Now that you have your VOIP phone, you need to get a VOIP service. The Free World Dialup service (http://http://www.freeworlddialup.com) is OK. The great thing about it is that you can use any SIP phone to connect to it. You do need to sign up (for free) however. In PHNET's case, we have deployed Asterisk (http://www.asterisk.org), as our soft PABX. This PABX connects us to the VOIP world (except Skype) and to the PSTN. -- Bombim Cadiz ***************************************** * Free/Open Source Software (FOSS) -- * * No windows. No gates. It is open. * * No Bill. It is Free. * *****************************************