Maybe I misunderstood the statement you made... Let me
paraphrase your original statement...
During bad
weather, at certain periods of time you experience:
consistent 14.4Kbps connections using AT&T (ISP? or Long
distance?) Long distance from Coast to Coast???
Are you just dialing into your network?
Christopher Grupe
Sr. Sales
Engineer
Nortel Networks, Service Provider &
Carrier
[email protected]
I speak for myself!
-----Original Message-----
From:
Roeland Meyer [mailto:[email protected]]
Sent: Thursday, January 04, 2001 2:19 AM
To:
Grupe, Christopher [DPARK:9234:EXCH]; Roeland Meyer;
'[email protected]'; [email protected]
Subject: RE: Dialup congestion and winter weather (fwd)
1) I'm my own ISP, dialing into my own modem banks. I am
reasonably
confident that I know what my own systems
are doing. They are not
interacting as you
describe.
2) Local loop-back tests show that my servers see full
bandwidth, on their
last mile. Similar testing on the
NC "last mile" show the bandwidth
contraints.
Since the bandwidth is constrained on the "last mile", the LD
trunk behavior is irrelevent. Although, that was a probability, until I
did
the tests.
3) You really wouldn't believe the telco attachment equipment
I carry in the
*other* half of my lap-top case. On the
road, I can attach to the
tin-cans-n-string
communications network, if I have to. Even if it does add
15 pounds to the carry weight<g>.
-----Original Message-----
From:
Christopher Grupe [mailto:[email protected]]
Sent: Wednesday, January 03, 2001 7:56 AM
To: Roeland Meyer; '[email protected]'; [email protected]
Subject: RE: Dialup congestion and winter weather
(fwd)
He Sent,
>-----Original
Message-----
>From: Roeland Meyer [mailto:[email protected]]
>Sent: Wednesday, January 03, 2001 12:53 AM
>To: '[email protected]'; [email protected]
>Subject: RE: Dialup congestion and winter weather (fwd)
>
>
>
>That isn't the only issue. I've just
found that Southern Bell does
bandwidth
>limiting on their residential customers. Most
folks would never know the
>difference, but when
v.90 modems start consistantly connecting at 14.4K, or
>less, then I know that the telco is only allowing 32K per
voice channel
>(rather than the usual 64K). BTW,
that was using AT&T universal LD from
>Graham,
NC, to Livermore, CA. I only ever got full-speed late at night.
Come on,
The ISP is not going to write
an init script for their modems to permanently
have
them connect at 14.4. Telco's don't turn down the PCM rate on dial up's
to 32KBps either... Telco's (RBOC's) have a separate
(unregulated) ISP,
which handles dial up traffic. The
regulated side is the switched side
(voice switch)....
One has nothing to do with the other (usually union
workers on the regulated side, and non-union on the unregulated side).
So to
prove your point, the dial side (ISP non-union)
would call the CO's and have
the Switchman changed the
line card to an ADPCM (32Kbps) card at the switch,
and
the ISP sets their modems to connect at 14.4Kbps. No way Jose!
Some CLEC's are running their line cards using ADPCM (32Kbps)
and over an
ATM backbone. The RBOC's at this time are
still using typical PCM (64Kbps)
per channel, for the
line cards (unless using BRI).
The problem you may be
experiencing is with the inter switched trunks, or
coming in a span that has timing slips, Errored Seconds, and
severely
errored seconds, etc. Especially if you are
going LD from NC to CA.
Christopher Grupe
Sr. Sales Engineer
Nortel
Networks, Service Provider & Carrier
[email protected]
I speak for myself!