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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

Splittting 'pipe-capacity'?



 
 
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  #1  
Old June 12th 04, 10:58 PM posted to uk.telecom.broadband
robert w hall
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Posts: 242
Default Splittting 'pipe-capacity'?

I've seen a couple of references recently to exchanges waiting on the
installation of either an 'ESE switch' or an 'ASDH2 unit' at an existing
enabled-exchange. As I understand it both these units perform a similar
function, and enable BT to
'aggregate network traffic from a number of exchanges within an area
and pipe it back to the core network.'

Questions
1) Is this a correct description of the role of both devices.

2) These devices appear to be relatively new - what did BT do
previously?

3) My impression is that up until recently, any exchange which 'made the
cut' (apart from a few small ones which were 'subtended'), got a full
170Mbps pipe to the core network. Now it appears, many of the existing
links will be shared using these devices. Is this a sign that BT
believes that the actual capacity of the full pipe is not needed at many
of these exchanges, (some of them medium-sized market-towns of 10,000
subscribers apparently).

--
robert w hall
  #2  
Old June 13th 04, 06:03 AM posted to uk.telecom.broadband
Sunil Sood
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Posts: 1,590
Default Splittting 'pipe-capacity'?

"robert w hall" wrote in message

I've seen a couple of references recently to exchanges waiting on the
installation of either an 'ESE switch' or an 'ASDH2 unit' at an
existing enabled-exchange. As I understand it both these units
perform a similar function, and enable BT to
'aggregate network traffic from a number of exchanges within an area
and pipe it back to the core network.'

Questions
1) Is this a correct description of the role of both devices.


You can read about the "ESE" that BT are likely to be deploying at
http://www.alcatel.de/doctypes/opgda...ESE_R22_ds.pdf

They are also deploying
http://www.alcatel.de/doctypes/opgda...esPlatform.pdf
within their network

Its all part of what is called moving the network intelligence to the "edge"
of the network

2) These devices appear to be relatively new - what did BT do
previously?


BT used to deploy similar devices but many more of them - these new ones
consolidate many tasks into one unit

3) My impression is that up until recently, any exchange which 'made
the cut' (apart from a few small ones which were 'subtended'), got a
full 170Mbps pipe to the core network.


155Mbps?

Now it appears, many of the
existing links will be shared using these devices. Is this a sign
that BT believes that the actual capacity of the full pipe is not
needed at many of these exchanges, (some of them medium-sized
market-towns of 10,000 subscribers apparently).


No, its a sign that BT have been planning/following their "21C Network"
plan - officially launched publically last week - for quite a while

These new boxes allow BT:

- to use the new equipment for multiple tasks, rather than as in the past
when they would have a different "box" per task
- to have the same/more functionallity then previously
- make future upgradability easier (upgrading the network to VoIP etc)

Regards
Sunil


 




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