narrowband & ip strategy steve wickenden & dave hughes 12 november 1999
TRANSCRIPT
Narrowband & IP Strategy
Steve Wickenden & Dave Hughes
12 November 1999
Objectives
Explain issues for UK in current deployment of Narrowband Networks
• Describe NB capacity demand and supply
• Identify drivers for change
• Provide an overview of BT’s 2 year plan
Inform OPF of our Dial IP proposals
• Provide an overview of Products and Pricing
• Provide an overview of deployment plans
Narrowband Core Network Topology
795 DLEs
74 DMSUs(71 Sys X & 3 NGS)
33 DJSUs/WATs(32 Sys X & 1 NGS)
DLE DLE
WAT/DJSU
DMSU DMSU DMSU
DLE
BT Plans to increase Narrowband Capacity
• Next Generation Switch
• Wide Area Tandems
• DLE Tandems
• Virtual Switch Location
Next Generation SwitchReplace System X DMSU/DJSU/WATs in fully interconnected single tier network.
• First switch operational 9/99
• 3 switches now operational
• 6 switches operational 11/99
• 11 switches operational 3/00
• 39 switches operational 3/01
Wide Area Tandems
• 16 operational at 10/99
Provide access to/from directly connected BT Local Exchanges
DLE TandemsProvide access to/from directly connected BT Local Exchanges
• First switch operational 4/00• 80 switches operational 9/00
Virtual Switch Locations
POC
BT Switch A
BT Switch B
OperatorNetwork
Standard Interconnect Link
Temporary Extension Circuit
Operators will interconnect temporarily with a switch other than that requested - switch B rather than switch A
• BT meets costs of extending the Operators interconnect link to the offered switch
• BT meets costs of connecting Operators to requested switch when this is replaced by NGS
BT Narrowband Demand Drivers
• Future demand is not “more of the same”
• PSTN future demand mix will be increasingly dominated by interconnect calls
• Interconnect demand is being dominated by Internet calls
Core Network “In Use” Capacity Growth
0
10000
20000
30000
40000
50000
60000
70000
80000
90000
100000
Aug-9
8
Sep-9
8
Oct-98
Nov-9
8
Dec-9
8
Jan-
99
Feb-9
9
Mar
-99
Apr-9
9
May
-99
Jun-
99
Jul-9
9
Aug-9
9
Sep-9
9
Oct-99
Nov-9
9
Dec-9
9
Jan-
00
Feb-0
0
Mar
-00
Apr-0
0
May
-00
Jun-
00
Jul-0
0
Aug-0
0
2Mbits
BT to BT OLO Internet Other OLO
OLO Forecasts of Interconnect Capacity for Internet Calls
0
5000
10000
15000
20000
25000
30000
Dec-98 Mar-99 Jun-99 Sep-99 Dec-99 Mar-00 Jun-00 Sep-00
2 m
bit
s
06/98 Forecast 10/98 Forecast 03/99 Forecast
06/99 Forecast 09/99 Forecast 09/00 Projected Outturn
Narrowband Switch Limitations
• Not appropriate for long duration calls
• Inefficient transport for IP calls
• Higher unit costs compared to equivalent IP technology
• Narrowband solution may not deliver the optimum consumer prices
Summary 1. BT’s plans will meet immediate demands on the narrowband network
2. Calls to the internet are driving the expansion of the BT and Operator Narrowband networks
3. Narrowband switches are not the best technology to use for volume growth of Dial IP traffic
4. The Internet explosion could drive IP investment to support Broadband Britain