Re: The development trend for optical transmission equipment

Hi There,


First of all, let me tell you that there is absolutely nothing new in
what you do claim to be "development trend" in optical networking.
Every single newcomer in this industry should at least get a short
overview of the past 30 years, for them to discover that every single
technic which they claim to be "new" or "trendy" is actually 30 or 25
or 20 years old... Like, the first large scale field trial, back in
1973, when AT&T came up with a high-count ribbon-fiber cable,
supporting voice, data, and images (if you ever thought 'TriplePlay' is
a new stuff, think again !), in a metro network !

Second : you guy should keep in mind that advertising is strictly
forbidden on Usenet, even when hidden behind nice blahblah...

Last : the next time you post an URL web link, please make sure there
is no automatic download attached to it. I personaly don't mind, thanks
to Mac OS X, but I'm affraid some of "standard" PC users will be badly
surprised...

Thanks for applying the rules next time you come here,
_Marc




nonford a écrit :

> Optical transmission equipment with broadband access and comprehensive
> service access has become the cosset in the most recent trend of
> development. On the one hand, products based on the PDH technique,
> which cost less than nine hundred USD, exhibit supreme inexpensiveness;
> on the other, the optical transmission equipment that develops on the
> basis of SDH technique, more often than not, is required by customers
> to be equipped with Ethernet interface or video frequency interface.
> As a typical PDH equipment, OM8E1PCM, produced by Heng Guang
> Technologies, Co., Ltd in Tianjin, China has integrated eight E1
> channels, one 10/100BASE-T Ethernet channel, one NX64bps, V.35 channel
> and PCM30 with 30 channels. However, the exquisite equipment featured
> by its 2U height and 19- inch width costs only 1000 odd USD. (For more
> information about this equipment, please login www.pcm30.com .)
> Sometimes, the designer may consider to realize the functions of VDF,
> DDF and ODF on the PCM, so as to provide the most customized and
> convenient product to clients. Such equipment is various and multiform
> in configuration and modality, which includes the European 7R series
> and 19-inch configuration.
> At the same time, SDH equipment with E1 channel, 1000M Ethernet
> interface and multi-channel 100M Ethernet interface has been more and
> more popularized. The broadband interface usually will adopt automatic
> and dynamic distribution manner, such as RPR technique.
> >From the discussion above, we can safely draw the conclusion that,
> low-priced optical equipment will be developed to include the
> comprehensive service access system. In addition to
> 10Base-T,100Base-T,1000Base-T with E1,E2,E3,T1,T2,T3 channels, 10/100
> auto-adaptation Ethernet, G.703 V35 interface, V11/V24 interfaces,
> video frequency, even the SCADA system is about to be able to
> transmitted in one or two optical fibers.

.

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