Undersea Cable STATS

[antowan]

General: SAT-3/WASC/SAFE

SAT-3/WASC

Alcatel Submarine Networks (France)
4-fibre cable using WDM and Optical Amplification
Cape Town to Portugal (14,279km)
Repeater Spacing = 70Km
10 Branching units
190 repeaters in line

Angola, Gabon, Cameroon, Nigeria, Benin, Ghana, Cote dvoire, Senegal, Canary Islands, Spain, Portugal

Initial Config:

8 x 2.5Gbps (techical symbols omited)
4032 x VC12
120,960 voice channels

Present config:
8 x 2.5Gbps plus 2 x 10 Gbps (techical symbols omited)
189 repeaters, 14 equalizers & 11BUs

System life expectancy of 25 years.

TOTAL CAPACITY: 120Gbps
MAX = 1,451,520 x 64kbps circuits

Power:

Full system voltage MLK to ABJ = 7.236V @ 900mA

MLK feeds 3,785V, ABJ feeds 3,453V



SAFE

Tycom Submarine Cable Systems (USA)

Cape Town to Malaysia (13,500km)
Repeater Spacing = 55km
4 branching units
229 repeaters in line

Mtunzini, Reunion, Mauritius, India


Initial config:

4 x 2.5Gbps (symbols omited!)
2016 x VC12
60,480 voice channels

Present config:

4 x 2.5Gbps (symbols omited!) plus 2 x 10Gbps
229 repeaters, 23 equalizers & 4 BUs

TOTAL CAPACITY: 130Gbps
MAX: 1,572,480 x 64 kbps circuits

Power:

Full system voltage MLK to MAU = 5,840V @ 920mA
MLK feeds 3,020V MAU feeds2,280V

 

[rpm]

Excellent information. Thanks Antowan.

 

[Vox Populi Vox Dei]

And Telkom are using such a tiny portion of that.

 

[bwana]

And Telkom are using such a tiny portion of that.

It would be nice to know for certain how much is being used. Damn cartels.

These stats are a nice bit of info to keep on hand.

 

[Gldm]

It would be nice to know for certain how much is being used. Damn cartels.

These stats are a nice bit of info to keep on hand.

25% is being used: http://strategis.ic.gc.ca/epic/internet/inimr-ri.nsf/en/gr117294e.html

Also, 100,000 DSL users with 3GB cap using pure 100% international traffic only could not reach 1% of the total available bandwidth, even if they all max their caps and use no local bandwidth at all.

 

[sunsoffun]

25% is being used: http://strategis.ic.gc.ca/epic/internet/inimr-ri.nsf/en/gr117294e.html

Also, 100,000 DSL users with 3GB cap using pure 100% international traffic only could not reach 1% of the total available bandwidth, even if they all max their caps and use no local bandwidth at all.

In theroy 1 million users will use 10%. What if we had 30 Gig caps, that would make the total 10 times higher?

 

[bwana]

25% is being used: http://strategis.ic.gc.ca/epic/internet/inimr-ri.nsf/en/gr117294e.html

Also, 100,000 DSL users with 3GB cap using pure 100% international traffic only could not reach 1% of the total available bandwidth, even if they all max their caps and use no local bandwidth at all.

Interesting read - thanks.

 

[pimal3]

So we can easily have 300gig caps for each user before the cable will be fully utilised. So much for international bandwidth shortage.