my partner is starting her own small business and I see Asterisk as a potential tool for providing her telephony requirements. At the moment we have a single PSTN for home and broadband, and we shall add a second PSTN line for the business. What I would like is to connect a server I have to the second PSTN line for incoming and outgoing calls/faxes, and then be able to access the Asterisk server via SIP phones over WLAN. Is this possible? What hardware would be required?