nanog mailing list archives
RE: dry pair
From: "Randy Neals (ORION)" <randy.neals () orion on ca>
Date: Fri, 29 Aug 2003 18:29:55 -0400
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
Current thread:
- Re: dry pairs, (continued)
- Re: dry pairs David Meyer (Aug 29)
- RE: dry pair Ejay Hire (Aug 29)
- RE: dry pair Austad, Jay (Aug 29)
- RE: dry pair Temkin, David (Aug 29)
- RE: dry pair Ejay Hire (Aug 29)
- RE: dry pair Mark Segal (Aug 29)
- RE: dry pair Randy Neals (ORION) (Aug 29)
- Re: dry pair Patrick Felt (Aug 29)
- Re: dry pair Joel Jaeggli (Aug 29)
- Re: dry pair Ian Mason (Aug 29)
- RE: dry pair Randy Neals (ORION) (Aug 29)
- Re: dry pair Patrick Felt (Aug 29)
- RE: dry pair Dr. Jeffrey Race (Aug 29)