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5 February 2003 Softswitch - Reality and FutureReality and Future
Softswitch - Reality and FutureReality and FutureNikolay Ilyin
Chief Technical Officer
RealEast [email protected]
ITEXPO |Session: Focus on Softswitch|ITEXPO |Session: Focus on Softswitch|
5 February 2003 Softswitch - Reality and FutureReality and Future
Contents
Main stagesMain stages Problems Problems solved by solved by softswitchessoftswitches Proposed solutionsProposed solutions New tNew trendsrends
5 February 2003 Softswitch - Reality and FutureReality and Future
Softswitch Evolution –Main Stages
SIP/H323 converterSIP/H323 converter Class 5 platformsClass 5 platforms Distributed universal systemsDistributed universal systems
5 February 2003 Softswitch - Reality and FutureReality and Future
NAT/firewall, Security requirementsNAT/firewall, Security requirements Productivity/no bottlenecksProductivity/no bottlenecks Easy to introduce servicesEasy to introduce services Sophisticated billingSophisticated billing Total system control and monitoringTotal system control and monitoring
Problems to be solved
5 February 2003 Softswitch - Reality and FutureReality and Future
Problems - NAT/firewall,Security Requirements
Now most of the end-users are behind the Now most of the end-users are behind the firewall/NAT. That makes RTP traffic flow firewall/NAT. That makes RTP traffic flow provisioning more complicated.provisioning more complicated.
In some circumstances clients do not want to In some circumstances clients do not want to provide their identity to other users.provide their identity to other users.
5 February 2003 Softswitch - Reality and FutureReality and Future
Problems - Productivity/No Bottlenecks
The systems should be designed in such a way that The systems should be designed in such a way that do not have bottleneck point.do not have bottleneck point.
Softswitch’s capacity should be easily upgraded as Softswitch’s capacity should be easily upgraded as the business grows.the business grows.
5 February 2003 Softswitch - Reality and FutureReality and Future
Problems - Easy to Introduce Services
TELCOs/system integrators want to have an ability TELCOs/system integrators want to have an ability for the quick introduction of new Revenue for the quick introduction of new Revenue Generation Services.Generation Services.
New Service introduction should not require New Service introduction should not require changes in the many parts of the system, just few changes in the many parts of the system, just few slight changes acceptable. slight changes acceptable.
5 February 2003 Softswitch - Reality and FutureReality and Future
Problems –Sophisticated Billing
Billing requirements became more complicated.Billing requirements became more complicated. Requirements:Requirements:
– Realtime billingRealtime billing– Multi-Service based billingMulti-Service based billing– Web portal for customers & resellersWeb portal for customers & resellers
5 February 2003 Softswitch - Reality and FutureReality and Future
Problems –Total Control and Monitoring of Money Making System
System owners (administrators) want to control the System owners (administrators) want to control the infrastructure systems 24x7infrastructure systems 24x7
Easy-to-use and at the same time powerful control Easy-to-use and at the same time powerful control mechanisms are required to manage highly mechanisms are required to manage highly distributed solutions.distributed solutions.
Open standards provide multi vendor supportOpen standards provide multi vendor support
5 February 2003 Softswitch - Reality and FutureReality and Future
Proposed Architecture
OverviewOverview PrinciplesPrinciples
5 February 2003 Softswitch - Reality and FutureReality and Future
Architecture – Overview
H323 GK
SIP
H323
H.323 Gateway
Mail Messaging Serv er
DataAccess Serv er
Application Serv er
Authentication Serv er
Notif y Serv erSchedule Serv er
CDR Serv er
Billing Serv er
SIP Gateway
Proprietary Interf aces
Proprietary Interf aces
Data Repository / Billing Sy stem
Statistics Serv er Rev iv er
SIP Proxy
ISDN Gateway
ISUP Gateway
RTP Proxy Serv er
RTP
PSTN Signalling &Media
Signalling and MediaProxies/Gateways
Infrastructure Servers
VoIP Media
Gateways
CORBA
Proprietary Interf aces
VoIP Signalling
RADIUS
5 February 2003 Softswitch - Reality and FutureReality and Future
Architecture – Principles
The switching is distributed among the number of The switching is distributed among the number of dedicated modules (no central unit)dedicated modules (no central unit)
Separation of service logic from the Separation of service logic from the signaling/media handlingsignaling/media handling
Is not tied to the particular signaling/media typeIs not tied to the particular signaling/media type Does not rely on the particular media server Does not rely on the particular media server
platform’s vendorplatform’s vendor IP-centricIP-centric
5 February 2003 Softswitch - Reality and FutureReality and Future
the Problems Solutions
Smart signaling/RTP NAT agents, RTP Smart signaling/RTP NAT agents, RTP proxying/scriptingproxying/scripting
Distributed architecture/clusteringDistributed architecture/clustering Application servers/totally web enabledApplication servers/totally web enabled Integrated billingIntegrated billing Realtime SNMP monitoringRealtime SNMP monitoring
5 February 2003 Softswitch - Reality and FutureReality and Future
Solutions - Smart Sign./RTP NAT Agents, RTP proxying/crypting
CPE1
CPE2
CPE3
CPE4
CPE5 RTP NATAgent
SIP NATAgent
5060
9000
RTP Proxy
SIP Proxy
RTPMultiplexed
RTP
RTP
RTP
RTP
RTP
Fire
wal
l with
NA
T
Interaction between CPEs and Softswitch modules
5 February 2003 Softswitch - Reality and FutureReality and Future
Solutions - Distributed Architecture/clustering
Software side – processing is spread out among Software side – processing is spread out among the different software serversthe different software servers
Hadware(low level) side – clusteringHadware(low level) side – clustering
5 February 2003 Softswitch - Reality and FutureReality and Future
Solutions – ApplicationServers/totally Web Enabled
Scenarios handlingScenarios handling Voice/fax/e-mailVoice/fax/e-mail Events schedulingEvents scheduling
Mail Messaging Serv er
Application Serv ers
Service SupportServers
CORBA
Schedule Serv er
5 February 2003 Softswitch - Reality and FutureReality and Future
Solutions – Integrated Billing
It requires integration of the billing with other components It requires integration of the billing with other components of Softswitch.of Softswitch.
CDR Serv er
Billing Serv er
Proprietary Interf aces
Data Repository / Billing Sy stem
CORBA
RADIUS
Bill ing support
CDR Server
LocalStorage
Application Server
Script
Script
Script
Billing Server
Data Repository
StartSession
CloseSession
StartCDR
CloseCDR
Interaction with the Billing system
5 February 2003 Softswitch - Reality and FutureReality and Future
Solutions - Real time SNMP Monitoring
SNMP is common standard, supported by a number SNMP is common standard, supported by a number of known tools such as HP OpenView and etc.of known tools such as HP OpenView and etc.
SNMP is combined with extention standards, like SNMP is combined with extention standards, like AgentX.AgentX.
5 February 2003 Softswitch - Reality and FutureReality and Future
Current Applications
IP-Centrex (IP-Office)IP-Centrex (IP-Office) Advanced calling cardsAdvanced calling cards VoIP exchange/Clearing houseVoIP exchange/Clearing house ASP/outsourcingASP/outsourcing
5 February 2003 Softswitch - Reality and FutureReality and Future
Applications –IP-Centrex (IP-office)
5 February 2003 Softswitch - Reality and FutureReality and Future
Applications –Advanced calling cards
Online billingOnline billing SS7, PRI ISDNSS7, PRI ISDN LC/COS/QoS/channel load routing, LC/COS/QoS/channel load routing, Authentication by trunk Authentication by trunk
group/DNIS/ANI/prefixgroup/DNIS/ANI/prefix Remote control on the WebRemote control on the Web
5 February 2003 Softswitch - Reality and FutureReality and Future
Applications - VoIP exchange/Clearing house
Clearing houses become common and convenient Clearing houses become common and convenient tools for a number of the customer types – small tools for a number of the customer types – small sized carriers, end-users.sized carriers, end-users.
5 February 2003 Softswitch - Reality and FutureReality and Future
Applications - ASP/outsourcing
ASP based business model – can be provided by ASP based business model – can be provided by outsourcing of full range of the Softswitch services outsourcing of full range of the Softswitch services to a number of customers – authentication, routing, to a number of customers – authentication, routing, billingbilling
In strongly competitive economy ASP-model reduces In strongly competitive economy ASP-model reduces financial risks for carriers.financial risks for carriers.
5 February 2003 Softswitch - Reality and FutureReality and Future
Trends
Wireless support (Wi-Fi, other)Wireless support (Wi-Fi, other) New mediaNew media VoIP houses - direct access to traffic sellersVoIP houses - direct access to traffic sellers UM applications utilizing speech technologiesUM applications utilizing speech technologies
5 February 2003 Softswitch - Reality and FutureReality and Future
Trends –Wireless Support
Next generation end users will have just simple Next generation end users will have just simple PDAs with IP-phones installed and use full range of PDAs with IP-phones installed and use full range of the services that the Softswitch can providethe services that the Softswitch can provide (IP-(IP-Centrex, etc.)Centrex, etc.)
5 February 2003 Softswitch - Reality and FutureReality and Future
Trends –New media
Support of live mixed media traffic Support of live mixed media traffic (video/audio/graphics/text)(video/audio/graphics/text)
Content-on-demandContent-on-demand Video-conferencingVideo-conferencing IMIM
5 February 2003 Softswitch - Reality and FutureReality and Future
Trends –VoIP houses
VoIP houses will allow for the customers to directly VoIP houses will allow for the customers to directly access to the actual traffic sellers, avoiding the access to the actual traffic sellers, avoiding the costs associated with ‘intermediate’ carrierscosts associated with ‘intermediate’ carriers
Sophisticated routing schemes will be implemented Sophisticated routing schemes will be implemented – dynamic QoS (policy agents)– dynamic QoS (policy agents)
Combination a variety of telecom services on Combination a variety of telecom services on demand (not just traffic termination)demand (not just traffic termination)
5 February 2003 Softswitch - Reality and FutureReality and Future
Trends –UM applications
UM applications will utilize intellectual voice UM applications will utilize intellectual voice gateways to provide fully automated service gateways to provide fully automated service generation frameworksgeneration frameworks
UM applications will combine more media types: UM applications will combine more media types: including live video, audio, textincluding live video, audio, text
5 February 2003 Softswitch - Reality and FutureReality and Future
Tasks to resolve
Security – CPEs do not support encryptionSecurity – CPEs do not support encryption Minimization of the bandwidth utilization for some Minimization of the bandwidth utilization for some
applications (IP-Centrex)applications (IP-Centrex) WEB telephony support (mobile IP, DHCP, etc.)WEB telephony support (mobile IP, DHCP, etc.)
5 February 2003 Softswitch - Reality and FutureReality and Future
Contacts
RealEast Networks, LLCRealEast Networks, LLC
www.realeastnetworks.comwww.realeastnetworks.com
[email protected]@realeastnetworks.com
Thank YouThank You