I am thinking about implementing an Asterisk Server and have a few questions. I am debating if I should use the real Asterisk, or Asterisk@Home, Asterisk@Home is easy to manage and comes with xPL for integration with automation controllers. Is asterisk@home asterisk plus aa nice Web GUI, or is it limited in some way. Also, What is the difference between FXO and FXS? I have two incomming POTS lines. Now, here is where I need some guidance. I have five employees that need to be mobile on site. We already have a Wi-Fi Network and I was wondering if I should use the new wireless VOIP handsets, or get some FXO (I think that is right) modules and get regular POTS cordless phones. Cost is a bit of an issue. Also, not including the wireless phones, thee would be a total of 3 or 4 IP phones, and 2 POTS phones, and one alarm system. I don't know the best way to configure the alarm. Should I put it through the PBX? I am wondering if I should because that is another point of failure. Should I wire it directly into the POTS lines bypassing the Asterisk system? Ok, to recap: if I go with using the POTS wireless handsets, then there is a total of 7 internal POTS extensions, and 3 or 4 IP. If I go with using IP wireless handsets, then there is 8 or 9 IP phones and 2 POTS. There are two incomming POTS lines with consideration for adding VOIP. As well, if I did add VOIP, I would want to make sure that any emergency calls would be going throught the POTS lines.