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TRANSCRIPT
2005-06-08 1
Ericsson NGN Solution
Presentation to ALTTC on BSNL Network ModernizationAugust 26, 2006
Pankaj [email protected]
Jaswant [email protected]
2006-08-26 2
Ericsson NGN – overview– Ericsson’s strategy– Next generation network architecture– Engine The Soft Switch Solution for Telephony and Multi-media
NGN Solution – ToIP– Signalling protocols, compression, interoperability and standards– Key issues for Network design – capacity, redundancy , design and
dimensioning– Carrier class Telephony over IP – just VoIP not good enough– Customer Cases– Recommendation for BSNL
Agenda, August 26
2005-06-08 3
Ericsson NGN - overview
Ericsson’s strategy
Next generation network architecture
Engine – The Soft Switch solution for telephony and multi-media
2006-08-26 4
Ericsson’s converged systems architectureLayered architecture based on 3GPP
GSM/EdgePSTN access
IP BB access
WirelineWirelineaccessaccess
IP Core
FixedTelephony
MobileTelephony
InteractiveMultimedia
TeS MSCSrv
PSTNPSTN GSMGSM
3GWLAN
AS-X AS-Y
SIP - interface
Application layer
Control layer
Connectivity layer
Access layer
POTS and multi-media supplied over one broadband access
CDMA2000®
Convergent Servicesover common IP core!
2006-08-26 5
Network overview – voice and data
ISUP
xDSL
H.248 UNI
LegacyCS
PublicEthernet
IP-MSAN
Eth
voice data
MSG/TAG
IP-MSAN
Eth
voice data
IP-MSAN
Eth
MSG/TAG
H.248 CL
VideoSPISP
IP/MPLS
V5.2
IP
IP
National IP
voice & dial-up
H.248 UNISIP
MGW-TAG
H.248 UNI
CE
CO
DEC
IP
TAG
CS
DTSDLS
TeS
AN/RSSAN/RSS
PBXPBXPRA
prop.V5.2
BRASBRAS
BRAS
POTS
2006-08-26 6
Evolution of telephony and multi-media services
LegacyCS
CS
CurrentCS/TDM
Complicated structureAgeing HWGrowing OPEX
LegacyCS
CS
MGW MGW
TGW TeS
H.248
Introduction ToIP
Migrate transit traffic to NGNRehome RSSConvert CSS to RSS
ToIP
ISUP
Other NetworksVoIP
SIP, H.323
BB and multi-media servicesContinued migration class 4 and 5 traffic
POTS+DSL
H.248
POTS
TeS
MGW
TeSMGCF
MGW MGW
SIPH.248CS
SIP
IP
TDM
ISUPToIPMMoIP
IMS
SIP
2006-08-26 7
Evolution of telephony and multi-media services
POTS+DSL
H.248
POTS
TeS
MGW
TeSMGCF
MGW MGW
SIPH.248
CS
SIP
IP
TDM
ISUP
BB and multi-media servicesContinued migration class 4 and 5 traffic
TeSMGCF
IMSSIP
2 to 1 strategy
POTS+DSL
H.248
POTS
AGC
MGW
TeSMGCF
MGW MGW
SIP
H.248 CS
SIP
IP
TDM
ISUP
BB and multi-media servicesContinued migration class 4 and 5 traffic
TeSMGCF
IMS
SIP
2006-08-26 8
SIP/H.323SIP/H.323VoIPVoIP
Wireline IMS architecture
EAB/ OX Lennart Norell
MPLS/ IPPBN Telephony
PSTN
CCS H.248
ISUP
MSG
Broadband access Router/
BRAS
MGC/MGC/SGWSGW
RTP
RTP
RTP
AGCAGC
PBX MSG
EARTDM
TDM
MSAN
H.248
IUA
H.248 (AGW)
RSS
Q.931
V5.2
Telephony provided by IMS also for legacy telephony access
TeSEngine Engine
SoftswitchSoftswitch
DSL
ScenarioScenario
TeSEngine Engine
SoftswitchSoftswitch
MSG
SIP-T
MSG MSG
ISC~SIP
PresenceServer
FeatureServer
SIPSIP
SIP
IMS control
HSS
Diameter
ABG
CSCF SIP
SIP
MRFP
MRFCH.248
SIP-T
SIPSIP-T
SIP
SIP+RTP
IAD
TeSAGC TeSNGC
EngineMultiMedia
2006-08-26 9
Service Network
Evolved telephony based on IMS
SIP CSCFCSCF
P2PP2PMultiMulti--mediamedia
ASASPresencePresence
ASAS
IP access &network
L
DSL
DSL
DSL
MSANMSAN
IMSIMSTeSAGCFAGCFTeSAGCFAGCF
2006-08-26 10
New wireline architecture
MPLS/ IP
TeS
POTS
Multi-media
PSTNPSTN
PublicEthernet
PublicEthernet
PublicEthernet
TeS TeS~101
~102
~106
~103 -104
POTS
MSG/TAG
IP-MSAN
BRASBRAS
2005-06-08 11
EngineThe softswitch solution for telephony and multi-media
2006-08-26 12
Telephony Softswitch Solution (TSS)
TelephonySoftswitch
Telephony Softswitch
Service Control Point (IN)
Local Exchange
Transit Exchange
PBX
Engine Integral - Telephony Softswitch Solution Solution overview and main building blocks
Other Networks
EAR
LE
TE
ApplicationServer
Packet BackbonePacket Backbone
Media Gateway
Media Gateway
IP-MSAN
TeS TeS
Operations and Management
Managem
ent for TSS
Separation of call and connection control
SignallingConnection
2006-08-26 13
Telephony Softswitch Solution (TSS)
TelephonyServer
TelephonyServer
Service Control Point (IN)
Local Exchange
Transit Exchange
PBXPBX
Softswitch – Telephony Server (TeS)
Other Networks TeS TeS
EAR
LE
TE
ApplicationServer
Packet BackbonePacket BackboneMedia
GatewayMedia
GatewayTelephony Server (TeS)Engine Integral SoftswitchCall control & call logic Uses proven TechnologyGlobal Class 4 and Class 5 feature setCarrier Class HW and SW implementation
2006-08-26 14
TelephonyServer
TelephonyServer
Service Control Point (IN)
Local Exchange
Transit Exchange
PBXPBX
Media Gateway – AXD 301
Other Networks TeS TeS
EAR
LE
TE
ApplicationServer
Packet BackbonePacket BackboneMedia
GatewayMedia
GatewayMedia Gateway - AXD 301 Media Gateway for telephony servicesMultiple IP and TDM interface optionsMultiple codec support Carrier Class HW and SW implementation
Telephony Softswitch Solution (TSS)
2006-08-26 15
TelephonyServer
TelephonyServer
Service Control Point (IN)
Local Exchange
Transit Exchange
PBXPBX
Other Networks TeS TeS
EAR
LE
TE
ApplicationServer
Packet BackbonePacket BackboneMedia
GatewayMedia
Gateway
PBN – Cisco Core & Edge RoutersCisco 12000 and CRS-1Provides the IP/MPLS transportCarrier-class implementation meetingthe telephony requirements
Telephony Softswitch Solution (TSS)
PBN – Cisco IP Core and Edge Technology
2006-08-26 16
IP-MSAN
Telephony Softswitch Solution (TSS)
TelephonyServer
TelephonyServer
Service Control Point (IN)
Local Exchange
Transit Exchange
PBXPBX
PSTN access node - Engine Access Ramp (EAR)
Other Networks TeS TeS
EAR
LE
TE
ApplicationServer
Packet BackbonePacket BackboneMedia
GatewayMedia
GatewayEngine Access RampSolution for ISDN and PSTN Copper ConcentrationCarrier Class
2006-08-26 17
Telephony Softswitch Solution (TSS)
Operations and Management
TelephonyServer
TelephonyServer
Local Exchange
Transit Exchange
PBXPBX
Operations and Management – MN OSS
Other NetworksTeS TeS
EAR
LE
TE Packet BackbonePacket BackboneMedia
Gateway Media Gateway
Managem
ent for TSS
MN-OSSNetwork Management and Service AssuranceA complete operational support solution defined specifically for multi-service networksDesigned to improve the solutions performance and reduce cost of operations
EARPacket BackboneMGW MGW
MN-OSS Service Activation
Billing Mediation
EMS
Cisco/Juniper EMS
TeS
2006-08-26 18
Engine Multi-Media Softswitch Solution
2006-08-26 19
Engine Multi-Media network solution3GPP architecture based om IMS
IP ConnectivityIP ConnectivityNetworkNetwork
IPIPAccessAccess
SessionServer
SubscriberManager
ApplicationServers
PSTNPSTN
MGWBRAS
Service
s
Service
s
Home Subscriber Server• Holding user profiles • Authenticating a user• Authorising user requests• Binding a user and a session
Session server (CSCF)• Routing of SIP messages• Triggering of services• Session control function • Bearer authorisation and policing
MediaManager
The MGC/MGW provides:Interworking with ISUP/TDM, SIP & H.323 NWs
Application Layer
Control Layer
Connectivity Layer
2006-08-26 20
Engine multi-media solution - 3GPP architectureDetailed view
Application Layer
Control Layer
Connectivity Layer N
etw
ork
& S
ervi
ces
Man
agem
ent
Provisioning
SNM
ChargingMediation
DNS / ENUM
RTPSIP
UE
RTPABG TDM
SIP
ISUP
MGCP
MGCF/SGSIP
MG
H.323
SIPNBG
SIP
DIAMETER
SIP
HSS
CSCF
CS-AS PS
SIP
CS-MS CS-CS AS
2006-08-26 21
Value of Engine Multimedia
IMS Architecture
• First or second line replacement
• Several phone lines• Video call• Instant messaging• Presence• Buddy lists
IP Telephony• Hosted PBX• One network for voice and data
• Complete service set for the enterprise
• Easy management of subscribers
• Multimedia services
IP Centrex
•The only standardized architecture for SIP based multimedia services •Open architecture – enables multivendor deployment•Modularity – add functionality •Fixed mobile convergence – common core network
IMS Architecture
Engine Multimedia
2005-06-08 22
NGN Solution – ToIP
Signalling protocols, compression, interoperability and standards
Key issues for Network design – capacity, redundancy , design and dimensioning
Carrier class Telephony over IP – just VoIP not good enough
Customer cases
2006-08-26 23
Signalling protocols, compression, interoperability and standards
2006-08-26 24
Telephony Softswitch Solution (TSS)
Local Exchange
Transit Exchange
PBX
Signalling overview in Telephony Softswitch SolutionsBasic operation
Other NetworksPSTN
EAR
AS
Packet BackbonePacket BackboneMedia
GatewayMedia
Gateway
IP-MSAN
Other NetworksVoIP
V5.2
DSS1PRA
ISUP
ISUP
ISUP
SIP, H.323
H.248
H.248/SCTP
TeS TeS
SIP-T/BICCSigtran
LE
TE
AN
PBX
IMS
SIP
Codecs:G.711G.723.1G726G.729
InteroperabilitySIP-T ”ISUP over IP” well defined by IETF RFCH.248 being standardised by ETSI/Tispan
2006-08-26 25
ISUP signalling – two basic alternatives
Channel associated signalling
POI EAR
INAP/CS1
TeSBICC
POI V5.2
SCPSCP
INAP/CS1
MGWMGW
ISUP
MGWMGW
ISUP
RPG
ATM/IP
STP - signalling
POI EAR
TeSBICC
POI V5.2
SCPSCP
MGWMGW
ISUP
MGWMGW
ISUP
RPG
ATM/IP
Secure signalling transportRedundancy
Reduced need of RPG
2006-08-26 26
Ericsson’s view on signalling in NGN
SIP-T or BICC for interconnect with other telephony softswitches (Sigtran)
H.248/SCTP for gateway control
H.248 access signalling for POTS and SIP for multi-media over a common broadband access.
– Operators see H.248 as the “next-gen. V5.2” for VoIP– Based on operator feedback Ericsson has decided to implement
H.248 signaling for POTS, rather than “SIP”
IP-MSAN (AGW) controlled by H.248 (ETSI Tispan)– Implementation in two phases
2006-08-26 27
IP-MSAN in two phases
PSTN/ISDNNetwork
TeSH.248 CL
MSG
IP
H.248 UNI
ABG/TAGEDA Combo
H.248 UNI IP
V5.2
Public Ethernet
phase 1AXE
based on the evolving H.248 standardizationin ETSI Tispan.
H.248 CL
V5.2
Public Ethernet
PSTN/ISDNNetwork
H.248 CL
MSGIP
H.248 CL
MPLS/ IPPBN Telephony
IP to IP gatewayEDA MSAN
phase 2TeS
AGW
AGW
H.248 UNI
H.248 CL
AXE
AXE
2006-08-26 28
Key issues for Network design CapacityRedundancyDesignDimensioning
2006-08-26 29
Redundancy for transit applications
50%
100%
30%
20%
10%
40%
20% 40% 60% 80%
loss
Redundancy
MGWMGW
MGWMGW
LX
MGWMGW
MGWMGW
LX
partitioning
two separate MGW
50%
50% 50%
50%
TeS
TeS
2006-08-26 30
Redundancy for local applicationsTwo options
MSGMSG MSGMSG MSGMSG
TeSTeS “Cold” stand-by
N+1 protection
AdvantagesCost-efficient, 1 redundant TeS can support may working TeS
Option 1: N+1
MSGMSG MSGMSG
TeS
AdvantagesHot stand-by, no traffic disturbance in case of a failure
“Hot” stand-by1+1 protection
Option 2: Mated pair, 1+1
ps
Mated pair
MGWMGWMGWMGW
RSS
Dual-homing
2006-08-26 31
Redundancy for local applicationsTwo options
MSGMSG MSGMSG MSGMSG
TeSTeS “Cold” stand-by
N+1 protection
AdvantagesCost-efficient, 1 redundant TeS can support may working TeS
Option 1: N+1
MSGMSG MSGMSG
TeSAdvantages
Hot stand-by, no traffic disturbance in case of a failure
“Hot” stand-by1+1 protection
Option 2: Mated pair, 1+1
Xdeactivation
activationX
2006-08-26 32
QoS
Availability Network mgmt
Security
It is not only about IP – it is about carrier-class IP
Carrier class IP is about network design and management!
Network architecture
Network economics
6 key issues Guiding principlesNetwork architecture
Multi-service, Multi-vendor Support MPLS/Pure IPSeveral hundreds MGW
QoSMouth-to-ear delay < 150 msecVoice packet loss < 1%MOS-value > 4
Availability – better than “5 nines”Back-up linksLink restoration time < 1 sec
SecurityProtect the telephony nodes from different kinds of attacks
ManagementProactive monitoring of voice traffic in IP network
MOS=Mean opinion score
2006-08-26 33
Packet BackbonePacket Backbone
Media Gateway
Media Gateway
Local Exchange
LE
Prop. delay (5 ms/1000 km)~10 ms (2000 km)+ IP Core network
Encoding delay
Decoding Delay
JitterBufferDelay
LE
Local ExchangeTDM
TDM
IP-MSAN IP-MSAN
Access networkdelay
Access networkdelay
~15 ms
Sampling: 5-20 msEncoding algoritm: ~10 ms ~20 ms
~10 ms (G.711/5 ms)~25 ms (G.729/20 ms)
~15 ms
Mouth-to-ear budget: 100-150 msec
Ethernet Ethernet
Delay budget
Delay contribution from IP-core network could safely be ignored
Our tests average0,650ms12 hops
Allow longer sampling time – if voice quality MOS>4
TeS
2006-08-26 34
Engine Softswitch Networks
your comm
unications
your comm
unications
In commercial service Contract
Contracted In Service
Softswitches 103 69
Media Gateway 316 223
Customers 33 24
2006-08-26 35
Network development - Phase 1ENGINE for the growing interconnect traffic to other operators
TX
TX
LS
TX
TX
LS
Other operators
Other operators
1 2 13
MGWMGW
MGWMGW
TelephonyTelephonyServerServer
MGWMGW MGWMGWMGWMGW
MGWMGW MGWMGW MGWMGW
MGWMGWMGWMGW
MGWMGWMGWMGW
TelephonyTelephonyServerServer
2 Tes26 MGW
packet core
4000 E1
2006-08-26 36
Network development - Phase 2Replacement of analogue local switches
MGWMGW
MGWMGW
TX
TX
TelephonyServer
TelephonyTelephonyServerServer
MGWMGW MGWMGWMGWMGW
MGWMGW MGWMGW MGWMGW
MGWMGWMGWMGW
MGWMGWMGWMGW
TX
TXTelephonyServer
TelephonyTelephonyServerServer
packet core
1 2 13
LS
New access nodes
TeSTeSTeS
MGWMGW MGWMGW MGWMGW
XXX
TeSTeSTeS
MGWMGW MGWMGW MGWMGW
X
Max. 125k
2006-08-26 37
ENGINE in MexicoStarting point
R2
PBX
RSS
RSS
PBXRSSRSS
CSS
R2
E10
Telmex PSTN
AXE
AXE AXE AXEImpossible!Growth
V5.2
AN
2006-08-26 38
Engine in MexicoStep 1 – introduce Engine softswitch
R2
PBX
RSS
RSS
PBXRSSRSS
CSS
R2
E10
GrowthV5.2
Telmex PSTN
AXE
AN
AXE AXE AXEMGW
TeS
2006-08-26 39
Engine in MexicoFuture steps – expansion and network consolidation
R2
PBX
RSS
RSS
PBXRSSRSS
CSS RSS
R2
E10
V5.2
Telmex PSTN
AXE
AN
X
AXE AXE AXEX X XMGW MGW
TeS
Growth
2006-08-26 40
Engine in MexicoFuture steps – grow with IP-MSAN
Telmex PSTN
AXE AXE AXEX X X
Growth with IP-NAM´s, reduced OPEX through node reduction
R2
PBX
NAM
RSS RSSRSS
CSS RSS
Growth V5.2
AXE
AN
X
MGW MGW
ETH
IP-MSAN
ETH
IP-MSANIPIP
TeS
2006-08-26 41
BT 21C aims
Revolutionise customer experience– Make it easier to buy and use services– Enable customers
Deliver innovative products more rapidly– Rapid service creation & implementation– With more people creating new services
Make it simpler to deliver and maintain service– Process, systems & network automation
Transform the cost base of the Company– Enabler of whole life cost reduction (Capex & Opex)
2006-08-26 42
What is the overall architecture?
A converged network based on IP and an MPLS core
An Intelligence layer that is mobile enabled based on 3GPP concepts
OSS systems controlling the complete network
An open applications layer
2006-08-26 43
21st Century Network structure vision
BeginFibre to thePCP
~30,000Multi-ServiceAccessDevices
~100MetroRouters
~10CoreRouters
End Customer
InternetPeering
DataCentre
InternationalNetworks
LogicalNodes
~80,000PCPsin the AccessNetwork
~100,000RemoteConcs,DLAMS& Data Muxes
~1000 +Voice Switchesand Data CrossConnects
~170 CoreSwitches(DMSU / NGS)
DataCentre
LogicalNodes
Today
Aggregation Service Edge CoreFuture
2006-08-26 44
Network areas & Selected partners
I-Node
Core
Transmission
Metro
Access
2006-08-26 45
Recommendation for BSNL Network
2006-08-26 46
“Rome was not built in a day”
2006-08-26 47
Recommendations for BSNL Network
Introducing NGN (TSS) Solution in International Gateway , Class 4 and Tandem Network.Migration of BSNL Local Access Nodes (RSS & V5.2 Nodes) to TSS based Network .Strengthening the IP access and IP Core Network.Increasing the Broadband Penetration.Introducing IMS Solution in Class A and Class B cities seeking Multimedia application.Evolving the mobile network under IMS umbrella providing feature transparency and true Fixed Mobile Convergence.
2005-06-08 48