Re: "Soft Dial Tone" on Uuused lines

Nov 14, 2005 0 Replies


>> Some other posters mentioned that an unused land phone line may still


>> offer dial tone to provide for emergency 911 service. Is this a >> recent offering?
> It's actually relatively old. "Soft Dial Tone" (also known as "Quick
> Dial Tone") was trialed by most of the RBOCs back in the early 1990s
> (I think that it was a Telcordia/Bell Labs brainstorm), but was mostly
> abandoned due to the need for dedicated facilities (a completely
> connected line for every address served) and TNs (SDT/QDT is
> essentially a non-billed, restrictive voice type of service).

So the client uses VOIP and the RBOC supplies 911 access ?


I'd love to hear what the other RBOCs (Verizon, BellSouth,
> Qwest/USWest) experiences with SDT/QDT were/have been, as well as if
> any of the independents have experimented with it or are currently > offering it.

Curious too :-)


Kind regards,


Gerard Bok

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required