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Introduction to Telecom OSS/BSS and frameworksPart -1
Ashutosh Tripathy (Solution Designer – British Telecom)
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By Ashutosh [email protected]
Agenda Short history of Telecommunications
Evolution Telecom Frameworks
TM Forum Frameworx
2G/3G Network Architecture
Network Elements
Customer L2C Journey
Why do we need support systems
OSS and BSS
Fulfilment Process
Order management system
Provisioning system
Inventory management system
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The history of Telecommunications Prehistoric Era: Fires, beacons, smoke signals, communication drums, horns
BC - Mail, Pigeon post,
1672 - First experimental acoustic (mechanical) telephone by Robert Hooke
1844 - Electrical telegraph by Samuel B. Morse
1876 - Telephones by Alexander Graham Bell
1893 - Wireless telegraphy by Nikolai Tesla
1895 - Radio by Marconi
1927 - Television by Phillip T. Farnsworth
1969 - Computer networking by ARPANET
1973 - First modern-era mobile phone by Martin Cooper
1982 - Email by Shiva Ayyadurai
1983 - Internet by ARPANET
2003 - VoIP Internet telephonyInteresting Watch:- https://www.youtube.com/watch?v=dLzgRU25tXM
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Evolution Telecom Frameworks4
Before 1970 OSS activities were performed by manual processes
1970 Onwards -ComputerizedLegacy Applications
1990s - TMN
2000 - Next Gen O/BSS
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Telecom Management Network(TMN)
BML
SML
NML
EML
NEL
Business Management Layer:-To manage the overall business. E.g. Achieving ROI, market share, employee satisfaction etc.
Service Management Layer:-Manage the service offered to the customer. E.g. Service quality, Cost, Time to market etc.
Network Management Layer:-Manage the network and the systems that deliver the services. E.g. Capacity, Diversity, Congestion etc.
Element Management Layer:-Manage the elements comprising the network.
Network Element Layer:-Switches, Transmission, disruption etc.
5• The TMN reference model refers to a set of standards by the International
Telecommunications Union (ITU-T) for the specification of a Telecommunications Management Network
• The TMN hierarchy, is a reference model that specifies a set of management layers that build on top of each other and address different abstractions of the management space.
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Challenges with legacy OSS:- Fast changing service
Multimedia, gaming, Content
Competition Wireline, MVNO, ISPs
New Networks FTTP, 4G, All IP
New technologies and standards SIP, XML, IMS, NGOSS
Formation of TM Forum in 1988. TM Forum is a non-profit industry association for service providers and their suppliers in the telecommunications industry. Members include communications and digital service providers, telephone companies, cable operators, network operators, software suppliers, equipment suppliers, systems integrators and management consultancies.
6Nextgen OSS/BSS
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Introduction of TM Forum FrameworxFrameworx is a suite of best practices and standards that when adopted enable a service-oriented, highly automated and efficient approach to business operations. Frameworx provides hundreds of standardized Business Metrics that have been embraced by the industry and allow for benchmarking, as well as a suite of interfaces and APIs that enable integration across systems and platforms. Frameworx also includes adoption best practices to help companies implement and use the standards and management best practices to ensure ongoing conformance.
Advantages:- Innovate and reduce time-to-market with streamlined end-to-end service management
Create, deliver and manage enterprise-grade services across a multi-partner value-chain
Improve customer experience and retention using proven processes, metrics and maturity models
Optimize business processes to deliver highly efficient, automated operations
Reduce integration costs and risk through standardized interfaces and a common information model
Reduce transformation risk by delivering a proven blueprint for agile, efficient business operations
Gain independence and confidence in your procurement choices through conformance certification and procurement guides
Gain clarity by providing a common, industry-standard language
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2G/3G Network Architecture18 Mobile Station
SubsystemBase Station Subsystem
Network Subsystem (Switching System)
Other Networks
SIM ME BTS BSC
NodeB
RNC GGSNSGSN
GMSCMSC/VLR
EIR HLR AUC
PSTN
PLMN
InternetSIM ME
SMSC
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Network Elements BTS Base Transceiver System – Handles the transmission of signal and data(2G).
BSC Base Station Controller – Controls the BTS (2G)
RNC Radio Network Controller – Controls NodeBs(3G)
EIR Equipment Identity Register – Maintains the active IMEIs (Whitelist, Black List and Grey List)
AUC Authentication Centre – Performs authentication
HLR Home Location Register – Maintains all the subscriber data for an operator
MSC Mobile Switching Center – Routes the voice calls to the intended BSC/RNC to connect
GMSC Gateway MSC – For routing the inter MSCs
VLR Visitor Location Register – Maintains the subscribers currently connect to a MSC (Including In Roamers)
SMSC Short Message Service Centre – Equivalent of MSC for SMS
GGSN Gateway GPRS Support Node – Gateway between SGSN and Internet. Handles connection to external world(Internet).
SGSN Serving GPRS Support Node – Handles data sessions for browsing, video calls etc.
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Customer L2C Journey20
•Walk in•Self-care Portals•SMS/APP•Call Centers
Customer Contact
•Feasibility Check•Order validation•Order Submit
Order Placement
•Customer problem Management
•Performance Mgmt•Quality Mgmt
Assurance
•Order Orchestration•Service Provisioning •Inventory Management
Order Fulfilment
•Usage Tracking•Mediation•Rating•Charging•Billing•RA & FM
Billing & Revenue
Mgmt
•Invoice Dispatch•Payment Collection•Dunning•Settlement
Payments
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BSS
OSS
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CRM
Order Fulfilment System
Provisioning System
Inventory Mgmt System
Billing System
Rating System
Mediation System
Online Charging
System(OCS)
Core Network
Device Mgmt System
Product catalogue
Network MgmtSystem
FM
RA
Fault Mgmt System
Customer Contact
Order Placement
Order Fulfilment Assurance Billing Payments
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OSS Landscape
The support systems handle the customer, the services that are offered to the customer and the resources that offer the services.
Support Systems to Manage the Customers:-
Support Systems to Manage Service:-
Support Systems to Manage Resources:-
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Why do we need support systems?
OSS/BSS
Infrastructure Service Delivery
Manage Service & BusinessOperation Support
System(Resource OSS)
Operation Support System(Service OSS)
Business Support System(BSS)
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OSS and BSS OSS (Operational Support System):- Also described as the “Network System”
is the combination of systems dealing with the telecom network itself, supporting operational work. Broadly the following sub systems. NW mgmt.
Service Delivery
Service Fulfilment
Service Assurance
BSS (Business Support System):- System that support business to directly serve customers. Broadly the following subsystems. Revenue mgmt. – Billing, Charging, Settlement, payment, Mediation, RA, FM
Customer mgmt. – CRM, PRM
Product mgmt. – Service Creation, Product Catalogue, Marketing Solutions
Order mgmt. – Order Orchestration system
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Fulfilment Process24
Sales Management
Inventory Management
Order Management
Service Planning & Dev
Service Provisioning
Network Planning & Dev
Network Development
Customer
Service
Network
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Order management systemWhat is an order management system? Order Management systems are complex systems that allow customer or customer
service representatives to capture and process new orders, modify existing orders, process customer moves and changes, price quotes and orders, validate orders, etc., while supporting multiple channels such as Web, Order template documents and partner applications as well as multiple lines of businesses.
A simple Order journey:-1. A customer goes to a service provider’s portal to add converged services to his or her
existing/new account.2. The order management system verifies and processes the order based on its product
catalog (which is in sync with the product control center) and service catalog, then decomposes and sends a service order to inventory system. The inventory system allocates resources.
3. The order management system submits the order to an activation system. 4. The service activation system provisions the service and sends activation data to the
order management system. 5. The order management system notifies the simulated billing system that the new
product has been purchased by the customer and its services activated. The service activation system also notifies the subscriber portal and CRM about a new subscription to the service.
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Order management system26
Call Center
Web PortalWalk In
Ord
er
Order Management
System
Billing system
Inventory systemService
Activation
Product control center
CRM
1
23 4
2
5
5
5
Customer places order
Notifies that the new product purchased is services activated to CRM
Processes order based on product catalogue
Notifies that the new product purchased is services activated to billing system.
Notifies that the new product purchased is services activated
SMS/APP
Assign Resources
Activation Request is placed
Returns Activation Data
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Provisioning System Provisioning in the process of preparing and equipping a network to allow it to
provide services to the customers.
Provisioning system decomposes and translates the request to MML(Man Machine Language) commands and sends them to the respective network elements for activation of service.
The responsibility of a provisioning system includes Configuring an application, Setting up parameters for security, Connectivity setup between elements, Associating storage with server or application, configuring of network for dynamically oriented transactions like authentication, accounting, and authorization etc.
To summarize, the provisioning system can do application provisioning, service provisioning, resource/element/server provisioning, network provisioning, storage provisioning, security provisioning, dynamic SLA-based provisioning, monitoring provisioning and any other setup activities.
Typically as OSS consists of multiple provisioning module, each specialized for a specific activity. The goal of a good provisioning system is to minimize the manual intervention as much as possible.
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Provisioning System Architecture28
NW and Element
Manager
Provisioning System
Management Plane
Wireless Components
Access Components
Transport Components
Infrastructure Plane
NW and Element
Manager
NW and Element
Manager
Provisioning Commands(MML)
Communication with Component APIs
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Inventory management System The inventory management system supports and interacts with multiple modules
relevant to fulfillment by keeping track of all the physical and logical assets and allocating the assets to customers based on the services requested.
Tracking inventory involves tracking equipment, facilities and circuits. Some examples of information tracked are: the location and quantities of the equipment, how a piece of equipment is configured and its status, etc.
Broadly there are 2 types of assets that the inventory management systems track. Physical assets – Devices, Switches and other equipment
Logical assets – Ports, circuit ids, ip addresses etc
Systems interacting with Inventory management system:- Order manager interacts with inventory manager (IM) to check if sufficient inventory
exists to complete an order. The purchase and sales module updates the IM with new assets added, old assets sold,
assets given to an outside party on rental, and assets that were borrowed from a third-party vendor
Provisioning module interacts with IM to work on allocated resources and also for updating the status of allocated resources.
The network manager contacts the IM to get static information on the resources being monitored and managed by the network manager.
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Inventory management System30
Purchase & Sales Mgmt. System
Provisioning System
Order Mgmt. System
Inventory Mgmt. System
Network Mgmt. System
Element Manager
Element Manager
Element Manager
Transport Elements
Access Elements
Circuit Elements
By Ashutosh [email protected]
References https://www.tmforum.org/
Fundamentals of EMS, NMS and OSS/BSS by Jithesh Sathyan
OSS/BSS FOR CONVERGED TELECOMMUNICATION NETWORKS: A PRACTICAL APPROACH, 1st Edition (English, WARGAD)
https://www.tutorialspoint.com/telecom_tutorials.htm
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Thank You“Our doubts are traitors, and make us lose the good we often might win, by fearing to attempt.” ― William Shakespeare
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