Additional FTTC CAB

Just seen an additional 288 port FTTC CAB being installed close to the existing 128 port that we are connected to. I wonder if this will complement the existing arrangement's or replace the existing CAB all together?

The additional cabinet has likely been installed due to the 128-line cabinet being full and customers on the PCP still looking for FTTC products (To increase capacity).

It would mean a serious misjudment of the take-up of FTTC if BTO installed a 255 FTTC CAB in addition to a 128 CAB already commisioned!

The logical options are a second 128 CAB, replace the 128 with a 255 288 (both giving twice the capacity) or an additional 255 288 CAB which would triple the original capacity!

Obviously depends on the number of lines supported by the PCP and the distance from the exchange (easier to sell FTTC in areas with 1Mb/s or less than those who already receive 20Mb/s via ADSL!).

EDIT: replace 255 with 288

Edited by greenglide (Mon 14-May-12 16:37:47)

Theirs a local cab near me that has both a 128 and 288 line cab installed next to it for extra capacity.

It is in a VM area, which could be why only the 128 was installed initially and then the larger 288 when demand increased.

I have also see 2 288 cabs next to one pcp but this is due to cab placement as another pcp is under 50 meters away on a small path.

Edited by deleted (Mon 14-May-12 16:33:06)

What make is the 255 cab? The big Huawei is 288.

Have edited my post, should have put 288 instead of 255.

In reply to a post by RobertoS:

What make is the 255 cab? The big Huawei is 288.

I made the mistake of stating 255 - the OP correctly said 288

128 is logical in computer terms, 255 would be (1 less than 256) but 288 seems a strange number

Post deleted by ukp

Had me wondering if there was a 255 ECI .

greenglide
288 is 6 cards of 48 ports each.

Cards sizes often move from 16 ports to 32 ports to 48 ports to 64 ports. Huawei seem to have 48port ones at present

With 4 Ge ports and a minimum 15Mb giving 264 ports. the dimensioning works out about right. Some ports will have products with less than 15Mb minimum on making it possible to use all 288 with a bit of luck. I wonder if the ECI 128 port cabs are 4*32port cards or 2*64 port cards ?

Roberto

I suspect that there is a 256 ECI cabinet out there, look for a bigger cabinet in an ECI area. Someone should be able to get a picture for you.

I assume that each supplier has seperate geographical areas as the head ends in the handover sites are unlikely to be compatable with each others equipment.

I thought it was strange that my second line (homeworking line) when I checked for FTTC availability said 31st May 2012. Never thought about extra capacity being needed to provide it. My existing 80Mbps line has more than enough bandwidth to allow me to work from it as well as the normal domestic usage.

The original FTTC CAB was a 288 port however, about 3 weeks after it was installed, it was removed and replaced with a 128 port one!! Being a rural area, they must have thought that take up would have been very slow but with around 250-330 houses being served by the PCP, take up of fibre services must be quite high if they are going to the expense of installing another one.

In reply to a post by kitcat:

I assume that each supplier has seperate geographical areas as the head ends in the handover sites are unlikely to be compatable with each others equipment.

All the cabs in my area, well the ones I've seen which is probably the majority are ECI 128 cabs

They have had install another cab by us, as the first 1 was full, it was only a small 1 (200 slots I was told), So it does look like BT may have got the demand wrong in some area's.
iechyd da

I vaguely remember there being cab shortages from the supplier a while back, if I'm not remembering wrong, they could of been installing the smaller ones where they would of otherwise put a bigger one in had they had stock.

In reply to a post by kitcat:

greenglide
288 is 6 cards of 48 ports each.

Cards sizes often move from 16 ports to 32 ports to 48 ports to 64 ports. Huawei seem to have 48port ones at present

With 4 Ge ports and a minimum 15Mb giving 264 ports. the dimensioning works out about right. Some ports will have products with less than 15Mb minimum on making it possible to use all 288 with a bit of luck. I wonder if the ECI 128 port cabs are 4*32port cards or 2*64 port cards ?

The result of too many years spent in computing expecting everything to be a multiple of 2 6 * 48 doesnt compute for no real world reason

In reply to a post by greenglide:

The result of too many years spent in computing expecting everything to be a multiple of 2

You mean a power of 2?

1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536, 131072, etc.

These are the only numbers that exist. Anything inbetween is an illusion...

I've not yet seen any ECI 288 capacity cabinets yet! I've only seen the small 96 ones which they appear to be using in most newly commissioned areas now.

Thanks