ISP DSLAM Equipment - How Does it help?

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1080p

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#62836 15-Jun-2010 21:23

I was wondering about this today; assume I have an ADSL2+ connection wired directly into my local exchange. By my understanding I am connected to Telecom (or is it Chorus now?) DSLAM equipment which is in turn connected to national backhaul (rented by my ISP), then to the ISP server/datacentre and from there to international links/peering points etc...

If I were to sign up with an ISP who has taken advantage of the unbundling legislation and installed DSLAM equipment into my exchange; what exactly would that give me as a customer?

From what I understand the ISPs DSLAM must still be connected to its rented national backhaul link and then its server(s) and international link (assuming international traffic).

From my limited understanding, it would seem that whether I am connected to Telecom (Chorus) equipment or [Insert ISP Here] equipment my connection would remain the same at least speed-wise.

Are the current Telecom (Chorus) DSLAMs incredibly old and decrepit making the upgrades necessary or is there something I do not understand in the connection process?

DjShadow

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#342101 15-Jun-2010 21:30

The ISP offering internet via its own gear may have backhaul provided by someone else.
e.g I believe Vodafone uses Vector Fibre for their backhaul from the Auckland exchanges to their HQ (correct me if I'm wrong).
Basically the ISP can be in 100% control of the quality of the service provided whereas everywhere else they are relying on Telecom Wholesale to provide a good/reliable service.

johnr

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#342104 15-Jun-2010 21:34

Your right

1080p

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#342158 16-Jun-2010 04:15

Ah, that does make more sense. So for example, if an ISP in Wellington was to use a different backhaul provider they might choose Citylink or FXNetworks or some other fibre provider to give backhaul from their DLSAMs in the exchange to their datacentre rather than the Telecom wholesale product.