[comp.dcom.modems] Using US modems in Japan

Richard.Milward@samba.acs.unc.edu (Richard Milward) (03/13/91)

Someone in the computer center here wants to know if he'll have
any problems using a US-made modem in Japan.  Other than possible
power-line differences, what are the gotchas?
--Richard Milward / network tech / UNC-CH
  Networking Systems office / 919-962-0002

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davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) (03/15/91)

Richard.Milward@samba.acs.unc.edu (Richard Milward) writes:

> Someone in the computer center here wants to know if he'll have
> any problems using a US-made modem in Japan.  Other than possible
> power-line differences, what are the gotchas?
> --Richard Milward / network tech / UNC-CH
>   Networking Systems office / 919-962-0002

What US-made modem? 

One thing for sure, it should be able to handle CCITT answer tones
as well as Bell. Another thing to consider is whether it is in the
Tokyo area (100 V 50 Hz) or the Kyoto-Osaka area (100 V 60 Hz). For
what it's worth, I'm running a Telebit Trailblazer T2500 and a
USRobotics Dual Standard with 100 V 60 Hz power without any problem.

Another consideration is service: my experience has been that
modems are the weakest part of the system and have replace/upgraded
quite a few. If you only need up up 2400 BPS MNP 5 I would suggest
the OMRON MD24FS5. Goes out the door for 40,000 yen (about US$300)
and works well. 

OMRON also makes a 9600 BPS V.32 model but it goes
out the door for about 150,000 yen; expensive but not as much as
the T2500, which go for 300,000 yen here in Japan...

Hope that helps,

--Dave McLane <davidg%aegis.or.jp@kyoto-u.ac.jp>

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necka@motcid.UUCP (William J. Necka) (03/16/91)

In article <2949@beguine.UUCP> Richard.Milward@samba.acs.unc.edu (Richard Milward) writes:
>
>Someone in the computer center here wants to know if he'll have
>any problems using a US-made modem in Japan.  Other than possible
>power-line differences, what are the gotchas?
>--Richard Milward / network tech / UNC-CH
>  Networking Systems office / 919-962-0002
>
	Here at Motorola, we have engineers going to Japan regularly
  to support our products in the field. They are equiped with Lap Top
  PCs, which are used for communications. They regularly call in to
  our Host Network at 2400bps from Japan. The phone Jacks there are
  RJ11 compatable and the AC power lines are 104v. Since the Lap Top
  is rated for 100v min, 240v max, they have no problem recharging their
  batteries.
	It is highly recommended that the modems have MNP or LAP. The
  lines are usually very bad. Often either the high band or low band of
  the 2400bps connection experiences errors. MNP or LAP would correct
  many of these errors. They do have to do blind dialing, because the
  dial tone and ring are not allways recognized. This is solved by setting
  the modem to X1.

______________________________________________________________________________
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futoshi@sra.co.jp (Futoshi Miyamori) (03/17/91)

In article <i4mVy8w163w@aegis.or.jp> davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) writes:

 >out the door for about 150,000 yen; expensive but not as much as
 >the T2500, which go for 300,000 yen here in Japan...

T2500's price is 248,000 yen. I got a T2500 at 165,000 yen.
My T2500 has 100V AC-adapter, mybe It's for Japan.
--
futoshi
E-Mail:futoshi@{sra.co.jp,jh1afn.e-tokyo.prug.or.jp}

davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) (03/17/91)

futoshi@sra.co.jp (Futoshi Miyamori) writes:

> In article <i4mVy8w163w@aegis.or.jp> davidg%aegis.or.jp@kyoto-u.ac.jp (Dave M
>
>  >out the door for about 150,000 yen; expensive but not as much as
>  >the T2500, which go for 300,000 yen here in Japan...
>
> T2500's price is 248,000 yen. I got a T2500 at 165,000 yen.
> My T2500 has 100V AC-adapter, mybe It's for Japan.

Hmmmm, well, I didn't actually buy one at that price; that was the
price that was quoted me before I got one from the States for
what came out to 150,000 yen, including Fed Ex.

I'd be interested in knowing where you got the T2500 in Japan if
they have T1600s as well.

--Dave

futoshi@sra.co.jp (Futoshi Miyamori) (03/17/91)

In article <DTNZy8w163w@aegis.or.jp> davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) writes:

 >I'd be interested in knowing where you got the T2500 in Japan if
 >they have T1600s as well.

Oh!, It's a top secret :-) sorry ...

--
futoshi
E-Mail:futoshi@{sra.co.jp,jh1afn.e-tokyo.prug.or.jp}