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Title / Demonstrate knowledge of complex or non-standard telecommunications core networks technologies and architectures
Level / 4 / Credits / 10
Purpose / This unit standard covers knowledge for people engaged in installation and maintenance of complex or non-standard applications in the provisioning and restoration of telecommunications core networks (fixed and mobile networks).
People credited with this unit standard are able to demonstrate knowledge of:
– technologies, architectures, transport mechanisms, protocols, and hardware components used to provide complex core network services; and
– technologies and architectures for complex or non-standard TCP/IP based core networks.
Classification / Telecommunications > Telecommunications - Service Delivery
Available grade / Achieved
Guidance Information
1 Unit 27972, Provision, commission, diagnose and restore telecommunication core network technology and services is recommended for entry.
2 References
Electricity Act 1992;
Electricity (Safety) Regulations 2010;
Search and Surveillance Act 2012;
Telecommunications Act 2001;
AS/NZS 3080 (2013): Information technology - Generic cabling for customer premises;
AS/NZS 3084 (2017): Telecommunications installations - Telecommunications pathways and spaces for commercial buildings;
Telecommunications Carriers’ Forum Code for Residential, SOHO and Multi-dwelling Premises Wiring (“Premises Wiring Code of Practice”);
National Code of Practice for Utility Operators’ Access to Transport Corridors;
and all subsequent amendments and replacements.
3 Definitions
ATM – Asynchronous Transfer Mode.
Core network service – in this unit standard means – complex and/or non-standard telecommunications core networks.
DHCP – Dynamic Host Configuration Protocol.
DNS – Domain Name System.
DWDM – Dense Wavelength Division Multiplexing.
H323 – an ITU protocol for multimedia communication on any packet network.
IP – Internet Protocol.
IS-IS – Intermediate System to Intermediate System.
ITU – International Telecommunications Union.
MGCP – Media Gateway Control Protocol.
MOS – Mean Opinion Score.
MPLS – Multiprotocol Label Switching.
OSI – International Standards Organisation.
OSPF – Open Shortest Path First.
PDH – Plesiochronous Digital Hierarchy.
POTS – Plain Old Telephone Service.
RIP – Routing Information Protocol.
RTP – Real-time Transport Protocol.
R-Value – an alternative method of assessing call quality.
SDH – Synchronous Digital Hierarchy.
SGCP – Simple Gateway Control Protocol.
SIP – Session Initiation Protocol.
SOHO – Small Office Home Office.
SS7 – Signalling System No. 7.
TCP – Transmission Control Protocol.
UDP – User Datagram Protocol.
VoIP – Voice over Internet Protocol.
xDSL – digital subscriber line. Where x =
A – asynchronous
H – high bit rate
S – synchronous
SH – synchronous high bit rate
V – very high bit rate.
xPON – Passive Optical Network where x =
A – Asynchronous Transfer Mode
B – Broadband
G – Gigabit-capable
S – Secure
E or GE – Ethernet.
Outcomes and performance criteria
Outcome 1
Demonstrate knowledge of technologies, architectures, transport mechanisms, protocols, and hardware components used to provide complex core network services.
Performance criteria
1.1 With the aid of diagrams showing a multi-site multi-node network and describe complex core network topologies, architectures, and applications.
Range includes but is not limited to – ATM, IP, legacy Voice, xDSL, xPON;
includes reference to – differences, limitations, interfaces, protocols.
1.2 With the aid of diagrams describe the function of the OSI connectivity layer elements.
Range layer elements may include but are not limited to – edge network components and elements such as; gateways, routers, POTS switches, interconnection points, interconnection media (such as copper, fibre, wireless), media convertors, typical interconnection transmission mechanisms;
interconnection transmission mechanisms may include but are not limited to – SDH, PDH, DWDM, xDSL, xPON.
1.3 With the aid of diagrams describe the OSI control layer elements and their function.
Range elements may include but are not limited to – gateways, routers, switches, interconnection points, interconnection media (such as copper, fibre, wireless), typical interconnection transmission mechanisms.
1.4 With the aid of diagrams describe the functions, structure, and typical usage of the OSI interfaces and protocols used in the control and connection layers with reference to the appropriate and applicable OSI layers used within the interface or protocol.
Range interfaces and protocols may include but are not limited to – TCP, UDP, IP, MPLS, H323, SIP, RTP, SS7, Data Link Layer, and routing protocols such as OSPF, IS-IS, RIP, and gateway protocols such as MGCP and SGCP.
1.5 With the aid of diagrams showing customer to customer connections over a multi-site multi-node network describe voice over core network related service delivery issues.
Range issues include but are not limited to – factors affecting the quality service of voice services;
factors include but not limited to – latency, propagation delay, availability, throughput, data compression, echo, jitter;
quality of voice services to include but is not limited to – brief descriptions of applicable ITU standards, MOS and R-value rating systems.
Outcome 2
Demonstrate knowledge of technologies and architectures for complex or non-standard TCP/IP based core networks.
Performance criteria
2.1 Explain the function and operation of components of a TCP/IP network.
Range media convertor, router, switch, network interface.
2.2 Explain common network configurations for an IPv4 network.
Range address, netmask, gateway, DNS, DHCP.
2.3 Document network addresses for a given network configuration.
Range evidence of one DHCP and two fixed IP configurations is required.
Planned review date / 31 December 2020Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for Assessment /Registration / 1 / 16 July 2015 / N/A
Revision / 2 / 23 November 2017 / N/A
Consent and Moderation Requirements (CMR) reference / 0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Comments on this unit standard
Please contact Infrastructure ITO if you wish to suggest changes to the content of this unit standard.
Connexis Infrastructure ITOSSB Code 101813 / Ó New Zealand Qualifications Authority 2017