Re: DB vs NP
- --- In coldwarcomms@y..., "Bober, David" <boberd@c...> wrote:
> > American telco tech's have always worked with power & voltageratios
> > expressed in Decibels(DB), usually referenced to 1 milliwatt in600
> > ohms(DBM)at voice frequencies.However,when working oninternational
> > circuits, especially private line,they encountered more than ain
> > language barrier; many European countries measure level & power
> > Nepers(NP),named for Napier,the inventer of logarithms,who oftenmeasure
> > spelled his name Neper.(1 NP equals 8.685 DB). This was often
> > frustrating as the foreign countries were not inclined to
> > in DB while troubleshooting, their position was the USAcontrolled
> > the circuit & therefore up to us to convert & determine any levelPerhaps
> > problems.
> As a European (ex-BT) I'd have to say that I always worked in dB.
> that's an Anglo-American thing that the "metric" side of Europechose not to
> adopt.My comments(my own & mostly from colleagues more involved than I)
were really addressing some continent countries such as
Germany,France,Italy,Spain;and the issues were mainly addressing the
late 1950's-1970's when the circuits were analog with lots of trouble
prone toll terminal equipment and carrier systems.
> > Another impediment to resolving problems overseas was the
> > bureaucratic & paroichial attitude of the government's Posts &
> > Telephone/Telegraph(PTT) personnel.They did'nt have the
> > customer service or sense of proprietorship that AT&Thad,especially
> > toward foreign interests.( AT&T was nationalized briefly in WW1,but
> > kept the incumbent personnel thank goodness).same
> I was third generation GPO/BT. I'd say that in Britain we had the
> "family business" tradition as AT&T, and *certainly* the same prideand
> professionalism in our network. By way of modern comparisson, I'dalso say
> that standards at both AT&T and BT have dropped considerably sinceI would agree since I never heard any significant negative
> respective deregulation.
experiences with the UK;and standards have indeed been dropped since
then;one would think with the competition customer service should be
paramount,but cost cutting compromises everything.
> > Compounding overseas troubleshooting was the wide variety of
> > unfamiliar carrier & terminal equipment in foreign countries, so
> > techs were unable to guide,prompt or assist an incompetant ornovice
> > tech as they could in the USA.of the
> An incompetent engineer is an incompetent engineer, whatever his
> nationality. I suspect some of this may have been more a question
> language barrier, rather than a technical one. My lastinternational project
> with BT was working on putting a cable through the service tunnelof the
> Channel Tunnel. You could fit my knowledge of the French languageonto the
> back of a postage stamp. How we ever managed to measure the loss onthose
> pairs is still a complete mystery!This is true & we had our fair share of incompetance;but my point was
that one can walk such a person through testing,patching
off,adjusting,and work arounds to restore service, if the equipment &
carrier was known to you; if it was not you were in the dark and had
to wait until someone at the distant end could fix the problem.
BTW my 1st experience with a UK service was in 1957 when Queen
Elizabeth visited Williamsburg,Va; a Morse telegraph circuit was
ordered for a news agency(maybe one of the last Morse services)
covering the event.I was'nt involved with the circuit itself but
assigned to assemble a key & sounder on a board sent to the site.