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Ignition · 24-07-2004, 06:07

Option 1 = BT Videostream - 2.3Mbit ultra-low contention connections.
Option 2 = Local Loop Unbundling, provider places own kit in exchange and arranges own backhaul from it.
Option 3 = Datastream, provider uses BT DSLAM but takes an ATM handoff from BT network at each exchange and terminates customer connection completely themselves.
Option 4 = BT Central, provider uses BT DSLAM and BT BRAS (broadband remote access/aggregation server) to collect together subscriber connections and pays for links from these BRAS to their own LNS/NAS or BRAS (L2TP Network Server / Network Access Server).
Option 5 = BT Central Plus, as in option 4 except BT also own the LNS/NAS and give provider a pure IP feed.

24-07-2004, 06:07	#55
Ignition Permanently Banned Join Date: Jun 2003 Location: South-East London Age: 47 Services: Depends who's being serviced :p Posts: 2,588	Re: Offnet ntl ADSL BB Option 1 = BT Videostream - 2.3Mbit ultra-low contention connections. Option 2 = Local Loop Unbundling, provider places own kit in exchange and arranges own backhaul from it. Option 3 = Datastream, provider uses BT DSLAM but takes an ATM handoff from BT network at each exchange and terminates customer connection completely themselves. Option 4 = BT Central, provider uses BT DSLAM and BT BRAS (broadband remote access/aggregation server) to collect together subscriber connections and pays for links from these BRAS to their own LNS/NAS or BRAS (L2TP Network Server / Network Access Server). Option 5 = BT Central Plus, as in option 4 except BT also own the LNS/NAS and give provider a pure IP feed.