The Telecom Digest for December 02, 2010
Volume 29 : Issue 325 : "text" Format
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Date: 1 Dec 2010 02:38:15 -0000
From: John Levine <email@example.com>
Subject: Re: Mobile Phone Forwarding Question
>>My wife owns an AT&T mobile phone. This weekend she'll get a T-Mobile
>>phone at LAX before she flies to Australia with Oprah Winfrey. Her
>>existing number is and her new number will be +1-512 numbers. I'm
>>considering forwarding her AT&T phone to her T-Mobile phone so she can
>>receive calls at her known, existing number while in Australia. My
>>question is which phone will take the hit on the bill? The AT&T or
As far as AT&T is concerned, the forward is just a domestic call. Any
call your wife answers in Australia on her T-Mo phone, whether
forwarded from the AT&T phone or otherwise, gets charged T-Mo's
roaming rate which their web site says is $1.69 per minute.
Getting a prepaid phone in oz with an Australian phone number is not a
bad idea. If you get the World Connect add-on to her AT&T plan for
the period when she's away ($4/mo, prorated to the number of days you
have it active) forwarded calls to her mobile are only 24 cents/min.
Australian mobiles don't charge for incoming calls, so that's the only
cost for the call. If you have a decent long distance plan on your
landline, their rate for calling her mobile should be about the same
Date: Wed, 01 Dec 2010 13:58:37 +1100
From: David Clayton <firstname.lastname@example.org>
Subject: Re: Mobile Phone Forwarding Question
On Tue, 30 Nov 2010 18:01:23 -0600, Robert Bonomi wrote:
> NOTE: If, as you indicated, the T-Mobile phone will have a U.S. phone
> number calls to it, when in Australia will be charged international
> 'roaming' rates. These rates can be, depending on carrier, etc,
> described as 'extortionate'. as in multi-dollar _per-minute_. It may
> make good sense to wait until arrival in AU, and buy a local phone
> once there. Then forward the AT&T phone to the AU number. Ideally,
> you'll only get hit for the 'basic' international call rate to AU, that
> way, because there is no 'roaming' involved. The -possible- 'gotcha' to
> that arrangement is if AU is "Caller pays" to cell numbers, and they
> charge excessive premiums for foreign origins.
Calls from Australian networks to US numbers seem to be charged at the one
rate regardless of the destination.
Looking at the T-mobile site is says roaming in Australia costs $1.69/min
with "*Roaming charges do not include local tolls or long distance
charges." (whatever that actually means).
The T-mobile rates to Australia are 25c/min, so the call forwarding option
may well be the better option. Mobile call rates from Australia to the US
from a mobile are around $A0.29c/min + 40c flagfall (Optus).
This website can help in finding a cheap mobile pre-paid service in
Melbourne, Victoria, Australia.
Knowledge is a measure of how many answers you have, intelligence is a
measure of how many questions you have.
Date: Tue, 30 Nov 2010 22:37:43 -0800
From: Richard <email@example.com>
Subject: Re: US may disable all in-car mobile phones
On Tue, 30 Nov 2010 11:02:56 -0800 (PST), Lisa or Jeff
>On Nov 23, 4:54 pm, Stephen <stephen_h...@xyzworld.com> wrote:
>> >It's not holding the cellphone, but the conversastion itself. Thus,
>> >hands-free phones are not the answer.
>> If this is true (rather than shades of gray) then it isnt the
>> cellphone that is the problem, but the distraction.
>> time to ban talking in cars, kids in the back seat and all the other
>> distractions that have caused accidents.........
>Those distractions you mention are separate issues.
>The issue at hand is cell phone conversations while driving a car.
No, the issue is the distraction from the main task of driving,
whether it's talking on a cell phone, changing the station of the
radio, or scolding the kids. There may be different levels of
distraction, but they all impact negatively on driving ability.
Date: Wed, 1 Dec 2010 06:44:07 +0000 (UTC)
From: "Adam H. Kerman" <firstname.lastname@example.org>
Subject: Re: Screw terminals (was: How Ma Bell Shelved the Future for 60 Years)
Robert Bonomi <email@example.com> wrote:
>Adam H. Kerman <firstname.lastname@example.org> wrote:
>>Robert Bonomi <email@example.com> wrote:
>>>Not those specific deficiencies, as much as inductive pick-up due to the
>>>lack of 'twist'.
>>>Some years back I lived in a 1964 construction 32-unit (8 units/floor, 4
>>>floors) apt building, about 6,000 wire-feet from the C.O.. One 50-pair
>>>drop to the building, terminated on screw terminals. The 'house' wiring
>>>was "quad" (J-K), _in_conduit_, with the 4 vertically aligned units sharing
>>>a common conduit.
>>In the days when I was more ignorant, I bought a spool of this kind of wire.
>>It was twisted. I have no idea if the twisting was tested and avoided any
>>kind of antennuation. Was it?
>'quad' wire has the four conductors stacked in a square arrangement, with
>a gradual (guessing at circa 1 'turn' per 8",-- don't have any handy to
>check) twist of all 4 wires as_a_unit -- a 4-strand helix, as it were.
>Thus, with respect to the other wires in the cable, its just as if it
>was absolutely straight conductors. Even if there is 'nothing' on the
>other wires in the cable, you've got inductive coupling from the linear
>'single- turn transformer".
I take it that's for nothing more than preventing kinks when going around
corners inside walls. I sort of assumed that it didn't address interference
>>Is there an actual problem with screw terminals, other than the amount of
>>space the consume versus a punch-down block? Is oxidation a concern?
>It is, as they say "performance limiting". when the "terminals' for a 'pair'
>are more than an inch apart, it is very difficult to maintain, say, the
>Cat 5 required 'twist rate' to within 1/2" of the connection point (which
>_has_ to be an 8P8C, per the standard). <wry grin>
But that standard is for data, not voice. I figured it would work for voice.
>Also, "as installed", the cross-connects between the termination of the
>50-pair drop to the building and the termination block for the 'house'
>wiring was all _single-strand_ hook-up cable. easily 6'-plus lengths.
That's what I figured.
>Oxidation, as such, was not an issue. While the feed cable was underground
>all the way from the C.O., each pair went through a 'protector' before
>reaching the cross-connect terminals.
>>A friend says he used to have a DSL line at his house to help him monitor
>>computer networks at his business on this kind of ancient inside wiring.
>It's -not- all that 'ancient'. I don't have a hard date for when the
>industry shifted to using 'twisted pair' for most/all _residential_ wiring,
>but 'quad' was still being commonly installed in the mid- to late- 1980s.
>_Commercial_ installations had -- mostly, if not entirely -- cut over to
>'twisted pair' in the prior decade, for wiring installs, driven by digital
>phone systems, the explosion of computer terminals that could use a
>'common' structured wiring system -- e.g. IBM 3270 over twisted-pair, vs.
>dedicated coax. The cost advantage of 'structured' wiring in a commercial
>environment was a very "compelling" argument.
It's interesting that AT&T didn't switch over early for residential. After
all, in the quanties they consumed, that would have driven down the per unit
cost right off.
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End of The Telecom Digest (4 messages)