1. Session 12
TMN
Adapted from Network Management: Principles and Practice © Mani Subramanian 2000 and solely used for Network Management course at Universitas Bina Nusantara

2. TMN Necessity for interoperability basis for TMN
Need for management of more than just the network components
Networks / subnetworks need to be managed
Services - internal and external need management
Business management needs to be addressed
TMN joint effort by ITU-T and ISO

3. TMN Conceptual Model Data Communication Network
Telecommunication Network
Voice
Data Communication Network
Operations
System
NMS
Workstation
Telecommunications
Management
Network
Transmission
Switching
Switching
System
Switching
System

4. TMN Conceptual Model Components Interfaces Customers
Services provided by
Telecommunications
Provider
Network
Operations Systems
System Operators OS X Q3 F
Workstation
Service provider A
Service provider B
Components
Interfaces

5. TMN Services & Functions
ACSE
ROSE
TMN Functional Components
TMN Management Services
Business
Management
Service
Network
Element
System Management Functional Areas
Configuration
Fault
Performance
Security
Accounting
TMN Function Blocks
System Management Functions
CMISE
QAF
NEF NM
Manager
Object
Alarm
M-GET /
GET-REQUEST
M-SET /
SET-REQUEST
M-CREATE
Communication Transport Service
(OSI Presentation Layer)
OSF
WSF MF
DCF
Presentation
Function
Remote Procedure Call

6. TMN Architecture Functional architecture: Functional modules or blocks
Physical
Informational
Architecture
Architecture
Architecture
Functional architecture:
Functional modules or blocks
Reference points between modules
Physical architecture:
Physical blocks
Physical interfaces between the blocks
Informational architecture:
Information exchange between entities
Object oriented

7. Functional Architecture
OSF MF
WSF
QAF
NEF q3 f qx x
TMN B
TMN A
MF Mediation Function
NEF Network Element Function
OSF Operations Systems Function
QAF Q Adapter Function
WSF Workstation Function

8. TMN Reference Point
Function Block
Function Block
Reference Point
Function blocks connected by conceptual interfaces, called reference point
Designated by lower case letters (upper case letter for physical interfaces)
x: Interface between operations systems that belong to different domains; e.g., interface between two NMSs belonging to two different domains
q3: Interface between two OSFs in the same domain
qx: Interface between mediation function such as RMON and agent in the network element
f: Interface to the workstation

9. Functional Architecture
OSF:
Functions performed by Operations systems: e.g., NMS, testing, accounting, trouble tracking
NEF:
Functions needed to support network elements;network elements themselves are not part of TMN: e.g., NM agent, MIB, collision rate
MF:
Operations on the information between network elements; e.g. filtering, protocol conversion. MF can be shared between multiple OSSs; e.g. RMON
WSF:
Human-TMN activities interface; e.g., GUI
QAF:
Adapter function to accommodate non-TMN entities; e.g. proxy server, SNMP-to-CMIP

10. Physical Architecture
Operations
System
(OS)
Data Communications Network
Q Adapter
(QA)
Network
Element
(NE)
Mediation
Device
(MD)
X/F/Q3
F/Q3 Qx Q3 X F
TMN
Workstation

11. Information Architecture
Manager
Agent
Operations / Requests
Responses
Notifications / Traps

12. Service Architecture Business Management q3 Service Management
Network Management
Element Management
Managed Network Element q3

13. OS: Trunk Testing System
Telecommunication Network
Public Switch
Transmission
Test System
Trunk
Voice
Nodes
Transmission Links
Trunk is a logical connection between two switching nodes
Periodic measurement of loss and S/N of all trunks
Failing threshold set for QoS; failing trunks removed out of service before the customer complains

14. OS: Telephone Switch Traffic
Figure 11.2 Operations System for Traffic Measurement
Data / Telecommunication
Network
Router / Switch
Traffic
Counter
Router / Switch
Measurement System
Transmission Links
Nodes
Traffic monitored at switch appearance
Call blocking statistics obtained
Traffic and call-blocking statistics provide data for planning
Importance of Operations, administration, maintenance, and provisioning

15. Example NMF Business Management Customer Service Service Mgmt
Tarif/Charging
Provisioning
Other
Network
Net Mgmt
Routing Admin
Traffic Admin
Restoration
Element
Net Element
Cust Admin
Switch Mgmt
Trans Eqpt
Mgmt
Details
Performance and
Billing Data
Configuration
Service-
impacting
Events
Equipment
Alarms Q3
TMN Logical
Layered Architecture
Physical Realization of
TMN Architecture q3
Ref. Point