NZQA registered unit standard
27970 version 1
Page 1 of 6
Title
Demonstrate knowledge of telecommunications core networks
theory
Level
3
Purpose
Credits
15
This unit standard covers basic underpinning knowledge for
people engaged in the provisioning and restoration of
telecommunications core networks (fixed networks and mobile
networks).
People credited with this unit standard are able to demonstrate
basic knowledge of:
–
regulations and standards impacting on core technology
equipment installation;
–
safety considerations when installing core technology
equipment;
–
analogue and digital transmission for core networks;
–
analogue and digital signalling, multiplexing and
hierarchies;
–
fixed and mobile TDM networks; and
–
core network test and measurement equipment and
procedures.
Classification
Telecommunications > Telecommunications - Service Delivery
Available grade
Achieved
Entry information
Recommended skills
and knowledge
Unit 27972, Provision, commission, diagnose and restore
telecommunication core network technology and services.
Explanatory notes
1
Evidence against this unit standard may be demonstrated through either knowledge
assessment or practical assessment. The use of diverse forms of evidence in
assessment against this unit standard is encouraged. Evidence must be in
accordance with industry practice and, where appropriate, must reflect environmental
considerations.
2
The term basic knowledge is used to describe the underpinning knowledge required
by candidates to support the range of practical installation and maintenance activities
assessed by Unit 27972, Provision, commission, diagnose and restore
telecommunication core network technology and services.
The Skills Organisation
SSB Code 100401
New Zealand Qualifications Authority 2016
NZQA registered unit standard
27970 version 1
Page 2 of 6
3
References
Electricity Act 1992;
Electricity (Safety) Regulations 2010;
NZS 2772.1:1999, Radiofrequency fields - Maximum exposure levels - 3 kHz to 300
GHz;
Resource Management Act;
Resource Management (National Environmental Standards for Telecommunication
Facilities) Regulations;
Search and Surveillance Act 2012;
Telecommunications Act 2001;
and all subsequent amendments and replacements.
4
Definitions
3G – Third Generation cellular services.
ATM – Asynchronous Transfer Mode.
CDMA – Code Division Multiple Access.
CWDM – Coarse Wave Division Multiplexing.
DECT – Digital Enhanced Cordless Telecommunications.
DMR – Digital Mobile Radio.
DWDM – Dense Wave Division Multiplexing.
EAS – Dense Wave Division Multiplexing.
EDGE – Enhanced Data rates for GSM Evolution.
eDMR – Ethernet Digital Mobile Radio (IP Radio).
EST – Electrical Service Technician Registration (EWRB).
EVDO – Evolution Data Optimised.
FDMA – Frequency Division Multiple Access.
FR – Frame Relay.
FTTH – Fibre To The Home.
FTTN – Fibre To The Node.
GPRS – General Packet Radio Service.
GSM – Global System for Mobile communications.
HSPA – High Speed Packet Access.
LTE – Long Term Evolution (4G).
MPLS – Multi-Protocol Label Switching.
NTU – Network Terminating Unit.
OSI – Open Systems Interconnect Model.
PCM – Pulse Code Modulation systems.
PDH – Plesiochronous Digital Hierarchy.
xPON – Passive Optical Networks, where x=variable.
SDH – Synchronous Digital Hierarchy.
SIP – Session Initiation Protocol.
SONET – Synchronous Optical Network.
TCP – Transmission Control Protocol.
TDM – Time Division Multiplex.
TDMA – Time Division Multiple Access.
UDP – User Datagram Protocol.
UMTS – Universal Mobile Telecommunications System.
WDM – Wavelength Division Multiplexing.
The Skills Organisation
SSB Code 100401
New Zealand Qualifications Authority 2016
NZQA registered unit standard
27970 version 1
Page 3 of 6
xDSL – digital subscriber line. Where x =
A – asynchronous,
H – high bit rate,
S – synchronous,
SH – synchronous high bit rate,
V – very high bit rate.
5
Range
The use of mathematics is not required except where calculation is specifically
mentioned.
Outcomes and evidence requirements
Outcome 1
Demonstrate basic knowledge of regulations and standards impacting on core technology
equipment installation.
Evidence requirements
1.1
Identify legislation impacting on core technology equipment installation.
Range
1.2
Identify company requirements and procedures to ensure compliance with
legislation, regulations, and standards and industry practice.
Range
1.3
Electricity Act, Electricity (Safety) Regulations, Resource
Management Act, Resource Management (National Environmental
Standards for Telecommunication Facilities) Regulations, NZS
2772.1:1999, Telecommunications Act and amendments.
may include but is not limited to – site access procedures, arrival
procedures, permit to work, work restrictions.
Define limits of work imposed by the Electricity Act.
Range
unregistered persons, trainee, EAS registered, EST registered.
Outcome 2
Demonstrate basic knowledge of safety considerations when installing core technology
equipment.
Evidence requirements
2.1
Explain hazards and health and safety considerations when working on core
network sites and equipment.
Range
The Skills Organisation
SSB Code 100401
electrical, optical, working at heights, fire, seismic, chemicals, site
access, security.
New Zealand Qualifications Authority 2016
NZQA registered unit standard
27970 version 1
Page 4 of 6
Outcome 3
Demonstrate basic knowledge of analogue and digital transmission for core networks.
Evidence requirements
3.1
Explain Layer 1 to Layer 4 hierarchies.
3.2
Explain basic concepts of data transmission.
Range
basic information theory, typical analogue and digital data
transmission systems, synchronous and asynchronous data
transfer, typical transmission levels and their adjustment,
handshaking, simplex, half duplex, full duplex, modulation
techniques.
3.3
Explain analogue to digital media converter principles with respect to function
and operation.
3.4
Identify commonly used data interfaces with reference to their key features and
applications.
3.5
Explain a current New Zealand digital service transmission network with
reference to purpose, operation, major hardware components, and interfaces.
3.6
Explain the function and operation of a NTU for the network identified above in
evidence requirement for 3.5.
Range
NTU, basic router, media converter.
Outcome 4
Demonstrate basic knowledge of analogue and digital signalling, multiplexing and
hierarchies.
Evidence requirements
4.1
Outline the principles of digital multiplexing with reference to creating a 2Mb/s
PCM frame and higher order PCM multiplexing systems.
Range
4.2
includes but is not limited to – sampling, quantising, encoding of
analogue signals.
Outline and compare SDH and PDH hierarchies in terms of what they are,
application, and configurations. The digital hierarchies are developed from lower
order to higher order MUX.
Range
The Skills Organisation
SSB Code 100401
SDH – DS1, STM1, STM4, STM16, STM64;
PDH – North American Signal Hierarchy, European Signal
Hierarchy.
New Zealand Qualifications Authority 2016
NZQA registered unit standard
4.3
Outline the principles of operation of different types of digital multiplexing
systems.
Range
4.4
xDSL, xPON.
Outline the principles of WDM systems.
Range
4.5
27970 version 1
Page 5 of 6
may include but is not limited to – CWDM, DWDM.
Explain the concepts of self-healing and hitless switching with reference to
diversity routing.
Outcome 5
Demonstrate basic knowledge of fixed and mobile TDM Networks.
Evidence requirements
5.1
Explain the function and associated features of fixed and mobile network
technologies with reference to standards and protocols.
Range
may include but is not limited to – MPLS, H.248, SIP, IP, TCP,
UDP, Ethernet, ATM, FR, xPON, FTTH, FTTN, xDSL, FDMA,
TDMA, CDMA, SONET, PDH, SDH, DMR, eDMR, GSM, UMTS,
GPRS, 3G, EVDO, DECT, EDGE, WiMAX, HSPA, LTE.
5.2
Outline with the aid of a labelled block diagram indicating major functions the
operation of any digital (TDM) exchange used in New Zealand.
5.3
Outline the functional and physical elements of core networks, access
(aggregation) networks, transport networks, and customer networks with
reference to the OSI model.
5.4
Explain with reference to functions and features basic principles of signalling
systems used across core networks.
Range
5.5
one in band signalling system, one out of band signalling system.
Explain network synchronisation principles with respect to function and
operation.
Outcome 6
Demonstrate basic knowledge of core network test and measurement equipment and
procedures.
Range
systems – fixed and mobile core switching, fibre optic systems, radio systems,
transmission systems.
The Skills Organisation
SSB Code 100401
New Zealand Qualifications Authority 2016
NZQA registered unit standard
27970 version 1
Page 6 of 6
Evidence requirements
6.1
Identify testing equipment to suit particular applications and environments.
testing environment – centralised, point, and handheld.
Range
6.2
Identify units of measure for given equipment.
6.3
Describe test equipment and tools used for commissioning of core network
technology and services with reference to environment, features and operation.
6.4
Describe test equipment and tools used for diagnosing faults in core network
technology and services with reference to environment, features and operation.
6.5
Explain testing methods and procedures for fault location and commissioning.
Planned review date
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
18 July 2013
Consent and Moderation Requirements (CMR) reference
0003
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact The Skills Organisation reviewcomments@skills.org.nz if you wish to
suggest changes to the content of this unit standard.
The Skills Organisation
SSB Code 100401
New Zealand Qualifications Authority 2016