Lowly DSL poised for gigabit speed boost

bealtine

http://www.cnet.com/news/lowly-dsl-broadband-poised-for-gigabit-speed-boost/

ItHurtsWhenIP

bealtine wrote: »

http://www.cnet.com/news/lowly-dsl-broadband-poised-for-gigabit-speed-boost/

Unfortunately this will not likely do anything to help rural Ireland - not with those ridiculous distances to the cabinet.

Physics Smithwicks!!!

bealtine

MMFITWGDV wrote: »

Unfortunately this will not likely do anything to help rural Ireland - not with those ridiculous distances to the cabinet.

Physics Smithwicks!!!

Agreed not a lot of use past about 250 metres or so...

bk

We have discussed this technology a few times over on the Broadband forum.

G.Fast is the next generation of DSL technology. It is best used with FTTDp (Fibre To The Distribution point). So where we currently have VDSL/FTTC, the future of this technology would be G.Fast/FTTDp

The distribution point is usually the last pole or underground duct before the phone line enters your home. Usually the Dp is less then 100 meters away.

It is better to think of this as a variant of FTTH, rather then VDSL/FTTC. Really it is FTTH, where they don't want the hassle of digging peoples paths, etc. to run a new Fibre directly into peoples homes. It will only be 0 to 20% cheaper then full on FTTH, depending on the difficulty of the FTTH install. For difficult FTTH installs it can be 20% cheaper, but for standard FTTH installs (where you can use existing ducts, etc. to push the fibre) then there is no saving.

So unlike VDSL/FTTC which is about 1/5th of the price of FTTH, there isn't a major cost saving here. More a useful technology to use alongside FTTH.

watty

Hardly different to ethernet to box at your gateway.

Nothing really to do with DSL except in a very vague sense.

bk

Interesting quote from Eircoms submission to the NBP:

FTTDP refers to the deployment of optical fibre as far as the copper distribution point (DP) and connection from the DP to the customer’s premises via existing copper infrastructure. The DP could be located in a manhole, an enclosure on a pole or in the basement of a building. This architecture could support VDSL or G.fast technology for a short copper drop connection, normally less than 250m. G.fast is particularly appealing for drops of less than 50m but the disadvantage is that it requires a very significant number of active elements in the network (e.g. an element per 48, 32 or 16 users) which is operationally challenging. G.fast will be commercially available in late 2016, although pre-commercial and pre-standardised versions are currently available. eircom will be conducting a prototype trial of G.fast over the coming months to gain more experience. eircom would consider G.fast to have advantages in cases where the connection to the house is under- ground and has been obstructed preventing installation of a replacement connection to the house. However, as many rural homes are connected via overhead, eircom considers that it should be possible, in the majority of cases, to deploy fibre all the way into the home. Nonetheless, G.fast offers an additional technical option that will prove useful in an FTTH deployment.

So I was correct in what I said above. Eircom views G.Fast/FTTDp as part of a FTTH rollout (as opposed to an alternative to FTTH like VDSL/FTTC) and that they would only use it to enter a building if the underground duct had become obstructed, thus making the normal FTTH install too expensive. In other words a backup for FTTH installs rather then the norm.

jd

bk wrote: »

Interesting quote from Eircoms submission to the NBP:



So I was correct in what I said above. Eircom views G.Fast/FTTDp as part of a FTTH rollout (as opposed to an alternative to FTTH like VDSL/FTTC) and that they would only use it to enter a building if the underground duct had become obstructed, thus making the normal FTTH install too expensive. In other words a backup for FTTH installs rather then the norm.

Could be handy for apartment blocks as well, as you wouldn't need to liaise with an OMC/managing agent to get the fibre to each apartment!

bk

jd wrote: »

Could be handy for apartment blocks as well, as you wouldn't need to liaise with an OMC/managing agent to get the fibre to each apartment!

God yes, I forgot about that, yes that would be a major advantage.

I've personal experience if fighting with idiots in the management company (yes apartment owners) delaying UPC coming to my building for months, grrrrr.....

watty

VDSL+ from fibre at premises in Hotel/Apartments/guest houses etc that have copper but not Cat5e to each room.