DSL modem

[Donovan Chun]

Warren Togami wrote:
> 
> ----- Original Message -----
> From: "Jimen Ching" <jching at flex.com>
> To: "Linux & Unix Advocates & Users" <luau at list.luau.hi.net>
> Sent: Wednesday, May 09, 2001 2:59 PM
> Subject: [luau] Re: DSL modem
> 
> > On Tue, 8 May 2001, Warren Togami wrote:
> > >line. Obviousdly this ain't gonna happen. The DSLAM shelf controller will
> > >DROP PACKETS somewhat randomly from everyone's feed. When packets get
> >
> > Curious, doesn't the A in DSLAM mean ATM?  Also, doesn't the M in DSLAM
> > mean multiplexor?  Can multiplexors drop packets?
> 
> I have no clue.  I was just quoting Del Wong.

Digital Subscriber Line Access Multiplexer 

> >
> > Also, last I checked, the bandwidth in the DSL package is guaranteed
> > bandwidth between you and your CO.  If your switch is dropping packets,
> > then that is false advertisement.  Are these ISP's allowed to do that?

Bandwidth only guaranteed to the CIR level.

> 
> I once remember either Del Wong or Bill Wiecking at MHPCC say that DSL is
> comparable to T-1, except you get a much lower Committed Information Rate
> (CIR) which I think is the actual "guaranteed" rate.  If I remember
> correctly you have a CIR of 64kbit/sec with all lines except for Platinum
> Plus, which is 128kbit/sec.  DSL speed is also heavily influenced by
> distance and line quality.
> 

The following is what I have been told by a reliable non-Verizon 
source.

Service Level	 Down/Up	 CIR
Bronze Plus	768K / 128K	10Kbps
Silver		384K / 384K	32Kbps
Gold		768K / 768K	64Kbps
Platinum	1.5M / 768K	192Kbps
Platinum Plus	1.5M / 768K	384Kbps

Donovan