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Evidence Guide: ICTOPN6128A - Design a dense wavelength division multiplexing system

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

ICTOPN6128A - Design a dense wavelength division multiplexing system

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare to produce a DWDM system design

  1. Obtain the planning document from appropriate person and determine site details
  2. Obtain the service type and the number of channels required between customer traffic sources and destinations and the type of protection required
  3. Obtain specifications of the optical fibre between sites
  4. Determine the fibre loss between sites
Obtain the planning document from appropriate person and determine site details

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain the service type and the number of channels required between customer traffic sources and destinations and the type of protection required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Obtain specifications of the optical fibre between sites

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine the fibre loss between sites

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate link budget for each wavelength path

  1. Use vendor's engineering design rules, specifications and data to calculate link budget and link margin for each DWDM wavelength and path
  2. Evaluate link budget and assess the calculated margin and make recommendations for improvement if warranted
  3. Analyse the specifications of the installed optical fibre and determine if dispersion will limit the maximum traffic data rate
  4. Generate options for system design that are realistic for the enterprise and network
  5. Evaluate and select preferred option based on enterprise business strategy outcomes, service policy and compliance with relevant legislation
  6. Discuss and confirm selected option with customer
Use vendor's engineering design rules, specifications and data to calculate link budget and link margin for each DWDM wavelength and path

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate link budget and assess the calculated margin and make recommendations for improvement if warranted

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse the specifications of the installed optical fibre and determine if dispersion will limit the maximum traffic data rate

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Generate options for system design that are realistic for the enterprise and network

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Evaluate and select preferred option based on enterprise business strategy outcomes, service policy and compliance with relevant legislation

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Discuss and confirm selected option with customer

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare detailed configuration documents for the DWDM system

  1. Outline the detailed requirements of the DWDM system for configuration document
  2. Prepare a configuration document according to the customer's traffic needs
  3. Prepare an internet protocol (IP) address allocation for all DWDM shelves and associated routers and gateways
  4. Submit documentation to appropriate person for approval and sign off
Outline the detailed requirements of the DWDM system for configuration document

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare a configuration document according to the customer's traffic needs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare an internet protocol (IP) address allocation for all DWDM shelves and associated routers and gateways

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Submit documentation to appropriate person for approval and sign off

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate upgrade options using emerging technologies

  1. Investigate the option of using a reconfigurable optical add-drop multiplexer (ROADM) and make recommendations outlining the benefits
  2. Investigate the feasibility of a future upgrade up to 100 Gbps system using optical transport network (OTN)-DWDM technology
Investigate the option of using a reconfigurable optical add-drop multiplexer (ROADM) and make recommendations outlining the benefits

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate the feasibility of a future upgrade up to 100 Gbps system using optical transport network (OTN)-DWDM technology

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Evidence of the ability to:

determine the fibre loss between sites

calculate link budget and link margin

prepare DWDM shelf configuration and specifications

produce a configuration document

investigate an emerging DWDM technology.

Context of and specific resources for assessment

Assessment must ensure:

sites on which design of a DWDM system may be conducted

manufacturer's technical documentation, relevant regulations and specifications.

Method of assessment

A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate for this unit:

direct observation of the candidate undertaking DWDM calculations

review of data gathered, reports and project plans prepared by the candidate

oral or written questioning to assess knowledge of design and configuring of DWDM systems.

Guidance information for assessment

Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, for example:

ICTOPN6125A Manage dense wavelength division multiplexing transmission system

ICTOPN6129A Analyse optical transmission systems.

Aboriginal people and other people from a non-English speaking background may have second language issues.

Access must be provided to appropriate learning and assessment support when required.

Assessment processes and techniques must be culturally appropriate, and appropriate to the oral communication skill level, and language and literacy capacity of the candidate and the work being performed.

In all cases where practical assessment is used it will be combined with targeted questioning to assess required knowledge. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

Where applicable, physical resources should include equipment modified for people with special needs.

Required Skills and Knowledge

Required skills

analytical skills to identify details relating to the project from the approved network plan

communication skills to discuss project brief with enterprise design and installation personnel, vendors, customers and contractors

literacy skills to:

write project briefs and interpret results and evaluate different types of technical data

interpret technical documentation and write reports in required formats

numeracy skills to:

interpret results and evaluate different types of technical data

analyse site survey data

planning skills to:

consider current, new technology, facilities and features when developing options

plan, prioritise and monitor own work and that of others

problem solving skills to address and analyse specific customer requirements

research skills to:

analyse impacts on planning processes

obtain and study information relating to emerging DWDM technologies

obtain geographical site information

study relevant legislation and associated operational codes

technical skills to identify barriers to plan realisation and evaluate emerging DWDM technologies

Required knowledge

configuration of DWDM shelf

DWDM principles of operation

electrostatic discharge

features and operating requirements of test equipment including:

optical time domain reflectometer (OTDR)

hand-held optical power meter

transmission test set

optical spectrum analyser

functions of optical add drop multiplexer (OADM)

functions of reconfigurable optical add drop multiplexer (ROADM)

IP addressing, subnet mask, dynamic host configuration protocol (DHCP) and default gateway

International Telecommunications Union (ITU) wavelength grid for DWDM

laser stability

dispersion compensation devices

link budget calculations and link margins

optical fibre connector types and characteristics

optical fibre types and characteristics

path protection and protection switching

physical optical loopbacks and software loopbacks

traditional protocols and emerging OTN technologies used on optical DWDM systems

ring topologies and linear network topologies

specific occupational health and safety (OHS) requirements that impact on the safe inspection of optical connectors and the safe measurement of optical power from laser transmission systems

Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Appropriate person may include:

consultant

planning engineer

project engineer

project supervisor

site supervisor.

Site details may include:

location of network sites

number of network sites

optical fibre path distance between sites

straight line distance between sites

type of site:

OADM

ROADM

terminal.

Service type may include:

interface requirements

protocol and bit rate:

digital video broadcasting - asynchronous serial interface (DVB-ASI)

enterprise system connection (ESCON)

ethernet

fast ethernet 100 Mbps

1 GbE

10 GbE

fibre channel

OTN

synchronous digital hierarchy (SDH)

synchronous optical networking (SONET)

STM-1 155 Mbps

STM-4 622 Mbps

STM-16 2.48 Gbps

STM-64 10 Gbps

STM-256 40 Gbps

100 Gbps

HD-SDI

SD-SDI.

Protection may include:

equipment protection

path protection.

Specifications may include:

chromatic dispersion (ps/nm*km)

cladding diameter

core diameter

end-to-end attenuation or dB loss per km at nominated wavelength

fibre type

non-zero dispersion shifted fibre (NZDSF) ITU-T G.655

non-dispersion shifted fibre (NDSF) ITU-T G.652 also known as standard single mode fibre 'SMF'

dispersion-shifted fibre (DSF) ITU-T G.653

1550-nm loss-minimised fibre (ITU-T G.654)

ITU-T G.656

LEAF fibre

number of fusion splices

polarisation mode dispersion

refractive index profile of core.

Optical fibre may include:

existing fibre

fibre optimised for DWDM system

new fibre.

Detailed requirements may include:

actual wavelengths specified

chirp parameter

dispersion compensation devices

maximum allowable span length

optical amplifier

optical signal to noise ratio (OSNR)

receiver threshold

transmit laser:

maximum power

minimum power

stability

type.

Configuration document may include:

channel configuration information

fixed optical attenuators

protection details

slot positions and circuit card type

type and quantity of circuit cards.

IP address allocation may include:

default gateway IP address

shelf IP addresses

subnet mask.