nanog mailing list archives
Re: DSL line stealing when there is no tone - DANGER - Operational content
From: Alex Bligh <alex () alex org uk>
Date: Wed, 16 May 2001 22:03:30 +0100
Greg,
I predict great profits for the first person to duct tape 100 'tracer tone-generators' into a 23 inch rack with 48v DC power source.
Not *quite* sure what you mean here, but you only need one tone generator - all the rest can be done with passive components. See (for instance) how tones were generated in the days of mechanical exchanges (*not* one oscillator per line) I thought about this a bit later, and realised that on ADSL (at least) it would be worth looking at the CPE. This is busy generating a linecoding with nothing in the sub 8kHz range. At the other end, anything sub 8kHz is dropped. Getting the CPE (via firmware, or internally) to stick some tone on the line would be trivial. Of course you'd need it as a configurable option in case someone wanted to use it for voice too. -- Alex Bligh Personal Capacity
Current thread:
- Re: 2 Wire T1 - HDLC, (continued)
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- Re: 2 Wire T1 - HDLC Jared Mauch (May 15)
- Re: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS Dan Hollis (May 14)
- Re: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS John Payne (May 14)
- Re: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS Hunter Pine (May 14)
- RE: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS Joe Marr (May 14)
- RE: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS Steve Schaefer (May 14)
- The DSL business model Steve Sobol (May 14)
- DSL line stealing when there is no tone - DANGER - Operational content Alex Bligh (May 14)
- Re: DSL line stealing when there is no tone - DANGER - Operational content Steve Schaefer (May 17)
- Re: DSL line stealing when there is no tone - DANGER - Operational content Greg Maxwell (May 17)
- Re: DSL line stealing when there is no tone - DANGER - Operational content Alex Bligh (May 17)
- Re: DSL line stealing when there is no tone - DANGER - Operational content Daniel Senie (May 17)
- Re: DSL line stealing when there is no tone - DANGER - Operational content John Fraizer (May 17)
- Re: People who purchase unproven technologies to support their Business, and whine about it. RE: To CAIS Engineers - WAKE UP AND TAKE CARE OF YOUR CUSTOMERS Bill Woodcock (May 14)
- Re: People who purchase unproven technologies...DSL mike harrison (May 14)
- Re: People who purchase unproven technologies...DSL Shawn McMahon (May 14)
- Re: People who purchase unproven technologies...DSL Greg Maxwell (May 14)
- Re: People who purchase unproven technologies...DSL Daniel Senie (May 14)
- Re: People who purchase unproven technologies...DSL Wojtek Zlobicki (May 14)
- Re: People who purchase unproven technologies...DSL Alex Rubenstein (May 14)
- Re: People who purchase unproven technologies...DSL Dan Hollis (May 14)