Transcript Data Centre location

DELIVERING BT’S
21ST CENTURY NETWORK
INDUSTRY WORKING
GROUP ON MSAN
ACCESS &
INTERCONNECTION
22 October 2004
AGENDA
• INTRODUCTIONS
• PURPOSE OF THE WORKING GROUP
• BACKGROUND, VIEWS SO FAR, ISSUES
• DISCUSSION
• SUMMARY OF ACTIONS / NEXT STEPS
BACKGROUND
• BT’s POSITION TO DATE
• INITIAL INDUSTRY FEEDBACK
- Metro-only interconnect could disadvantage PNOs who have built out
- Pressure for MSAN interconnect
• BT’s DISCUSSIONS WITH VENDORS
• QUESTIONS
- MSAN access or MSAN interconnect?
- voice-only or broadband only?
- all 5500 sites or just the 300 DLE sites?
- how many PNOs?
• EQUIVALENCE
- LLU
- broadband dial-tone
Conc
Tandem
DLE
~5500 sites
~300 sites
MSAN
~70 sites
Metro
~5500 sites
~120 sites
140
120
100
55
80
60
32
Neither
At other POC sites
At NGS Sites
40
20
42
0
For discussion purposes only.
No implementation assurance implied or intended
Conc
~5500 sites
MSAN
~5500 sites
Tandem
DLE
~300 sites
~70 sites
Metro
~120 sites
For discussion purposes only.
No implementation assurance implied or intended
Conc
Tandem
DLE
~5500 sites
~300 sites
MSAN
~70 sites
Metro
~5500 sites
~120 sites
MSAN
MSAN
Metro
MSAN ~120 sites
~5500 sites
MSAN
For discussion purposes only.
No implementation assurance implied or intended
THE FOLLOWING SLIDES SHOW SOME POSSIBLE
ACCESS AND INTERCONNECT SCENARIOS. THEY
ARE FOR DISCUSSION PURPOSES ONLY AT THE
WORKING GROUP LEVEL AND ARE NOT
PROPOSALS.
NETWORK CHANGES
Conc
Local
Tandem
Tandem
Local
Conc
PNO
Data Centre location
Ofcom
request
MSAN
PNO
Intelligence
Call agents
Metro
Node
Mgt
BT’s MPLS
core
For discussion purposes only.
No implementation assurance implied or intended
Metro
Node
MSAN
APPROACH 1 - IP CONNECT AT MSAN
Data Centre location
Intelligence
BT control
of H.248
Gateway
MSAN
PNO signalling
passed to BT CA.
Media direct to
MSAN LGW
Call agents
Metro
Node
PoP
Mgt
BT’s MPLS
core
Other operator’s
network
For discussion purposes only.
No implementation assurance implied or intended
Metro
Node
MSAN
PoP
Key:
Physical
BT Signalling
PNO Signalling
Media
APPROACH 2 - TDM CONNECT AT MSAN
Data Centre location
Intelligence
Call agents
Mgt
MSAN
MSAN
Metro
Node
MSAN sites which
were formerly
Concs parented on
DLE are grouped
together
PoP
BT’s MPLS
core
Other operator’s
network
For discussion purposes only.
No implementation assurance implied or intended
Metro
Node
MSAN
PoP
Key:
Physical
BT Signalling
PNO Signalling
Media
NETWORK TOPOLOGY – DLE EQUIVALENT
Data Centre location
Intelligence
Network may be subtended
anyhow (in some cases, if
cheaper – or needed for
resilience).
Subtending would be required
in “DLE replace” cases.
Call agents
Metro
Router
Mgt
Call Server partitioned to
match DLE. (Needed
anyhow for migration & OSS
support ?)
BT’s MPLS
core
MSAN
MSAN
MSAN
Lead MSAN at DLE (NonMetro) site providing PNO
Interconnect.
MSAN
PNO
MSANs at “Child”
Conc sites.
For discussion purposes only.
No implementation assurance implied or intended
IP CONTROL OF H.248 GATEWAY ?
Data Centre location
Intelligence
Call agents
MSAN
Metro
Node
PoP
PoP
Mgt
BT’s MPLS
core
Other operator’s
network
Metro
Node
MSAN
PoP
PoP
For discussion purposes only.
No implementation assurance implied or intended
Key:
Physical
BT Signalling
PNO Signalling
DELIVERING BT’S
21ST CENTURY NETWORK
THANK YOU
www.btwholesale.com/consult21