The current system uses existing Cat3 (two pair) to get to the digital telephone set in each office. Some offices have an additional pair which is used for fax (and DSL). I belive this fax line is a POTS line from the telco.
The owners would like to replace the existing telephone system, but they are adamant that the exsiting wiring be reused. They would like to provide a LAN connection to each office for both data and voice. (They would also like to install cable TV in each office, but cable install costs would be $80,000+.)
The owners are concerned about frequent power failures and keeping the telephones operational. Whatever equipemnt and telephone sets we put in the offices will have to be powered from a central UPS (PoE).
So how can I do this? Can I use RS485 adapters to get ethernet to each office via the two pair? What kind of data rate can I get with RS485, and would it be half- or full-duplex? Would wireless work in a steel building? Is there some other technology that can be used?
Ideas, anyone?
Thanks, Mike
-- Michael Welter Introspect Telephony Corp. Denver, Colorado US +1.303.674.2575 [EMAIL PROTECTED] www.introspect.com _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users