virginia beach

Sat Dec 7 22:27:39 UTC 2019

Indeed.

Even if the PFE and SLTE are side-by-side inside a room at the CLS, the
physical connection between them typically happens inside the BMH (beach
manhole).

So provided you can run the Management traffic between the SLTE and PFE
optically, you can separate both devices as far as your optics can carry
the full channel payload toward the wet plant. That could be anywhere
between 80km - 120km, depending on your optics and Tx launch power
requirements.

Mark.

On 6/Dec/19 16:04, Mehmet Akcin wrote:
> Thank you
>
> I know SLTE can be further than 100m
>
> On Fri, Dec 6, 2019 at 06:26 Mark Tinka <mark.tinka at seacom.mu
> <mailto:mark.tinka at seacom.mu>> wrote:
>
>     If the SLTE and PFE are not going to be co-located next to each
>     other, the 2 main considerations are:
>
>       * The Management signal between the SLTE and the PFE, which is
>         generally ran over copper. So 100m becomes the distance limit.
>         However, you can mitigate this by doing media conversion
>         between optical and copper. Also, it's quite possible that
>         modern PFE's and SLTE's can run Management traffic over
>         optical signals. One would have to check with the vendors.
>
>       * The SLTE Launch Tx power into the wet plant toward the 1st
>         repeater. You'd have to design this for every specific case;
>         whether you want to co-locate the SLTE and PFE, or if you want
>         to separate them. This is critical so that all payload
>         channels are correctly balanced.
>
>     Mark.
>
>
>     On 5/Dec/19 05:53, Mehmet Akcin wrote:
>>     is there any limitation of where an SLTE can be placed in terms
>>     of distance from PFE?
>>
>>     I have looked in to usual palaces and i was unable to confirm
>>     there is any requirements for any distance. Any cons can you guys
>>     think of that you want to share would be appreciated.
>>
>>     here are places I have looked at
>>
>>     http://opticalcloudinfra.com/index.php/2018/03/28/whys-hows-open-subsea-cable-systems/
>>
>>     https://www.osa.org/osaorg/media/osa.media/OSAF/Banners/Cable_Powering.pdf
>>
>>     http://opticalcloudinfra.com/index.php/2016/02/27/why-open-subsea-cable-systems/
>>
>>     thank you
>>
>>     On Tue, Nov 26, 2019 at 1:03 PM Mark Tinka <mark.tinka at seacom.mu
>>     <mailto:mark.tinka at seacom.mu>> wrote:
>>
>>
>>
>>         On 26/Nov/19 18:47, Ben Cannon wrote:
>>
>>         > Nowadays however, the CLS is looked at more like an ILA
>>         shelter, or
>>         > when feasible cable landings are going directly into metro
>>         CNDCs as
>>         > the physical gear is getting smaller and smaller and more
>>         suitable for
>>         > colocation.
>>
>>         Nowadays, the SLTE sits in a proper data centre.
>>
>>
>>         >
>>         > There’s still the small matter of 11,000volts of power or more…
>>         >  That’s usually kept out towards the sea.
>>
>>         Yes, PFE's will generally live at the CLS.
>>
>>         Mark.
>>
>
> -- 
> Mehmet
> +1-424-298-1903

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