North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: dry pair
>How would an alarm company get around this? Would Qwest need >to run copper into the neighborhood if any one of the people >purchased an alarm? If not, how would the alarm company get >the signal pushed through the fiber, and could that be done >with the dsl signal? Most home/small business alarm systems use a digital dialer and use a regular dial up phone line. The alarm system dials the alarm monitoring station then uses a low speed data protocol to report the alarm. Of course if the line is cut the alarm can't get through. For businesses that are required to have a monitored/dedicated line on their alarm there is a newer technology called "DVACS" which uses a low speed Frequency Shift F1/F2 modem to communicate alarms over a voice-band private line. Voice-band (300-3000Hz) private lines as well as 56K/64K DDS and ISDN digital lines can be provisoned over most DLC/SLC fiber systems. -Randy
|