(keitai-l) History of telecoms

From: Gerhard Fasol <fasol_at_eurotechnology.com>
Date: 05/08/06
Message-Id: <9B3CE15F-2117-4472-BE37-3B5D9064FD1C@eurotechnology.com>
For those of you interested in the history of telecommunications
as it was last century:

DS0 64 kbps
ISDN 2xDS0 = up to 128 kbps
T1   24 DS0 = 1.544 Mbps
T3   28 x T1 = 43.232 Mbps
OC3 = 84 x T1 = 155 Mbps
OC12 = 4 x OC3 = 622 Mbps
OC48 4 x OC12 = 2.5Gbps
OC192 = 4 x OC48 = 9.6Gbps

Gerhard



> On May 8, 2006, at 03:18 , Shannon Jacobs wrote:
>
>>> From: Gerhard Fasol <fasol@eurotechnology.com>
>>> Subject: Re: Sharp Zero3 from WillCom
>>> Date: Fri, 5 May 2006 23:02:05 +0900
>>>
>>> 1, The W-ZERO Site is here:
>>> http://www.willcom-inc.com/ja/lineup/ws/003sh/index.html
>>
>> Thanks, though I've already spent a lot of time there and on other  
>> Japanese
>> pages. While I read Japanese, it's not like when I'm reading in  
>> English. In
>> bandwidth terms, I could describe my Japanese reading as a 300  
>> baud modem
>> versus my English T1.
>
> T1??? Why not ISDN?
>
> I'd recommend FTTH these days.
>
> Gerhard
Received on Mon May 8 05:23:19 2006