Elements and Performance Criteria

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.
End-user requirements may include:
how and what the organisation wants in regard to:
preventative maintenance and diagnostic policy
problem solution processes
return on investment (RoI)
roles and technical responsibilities in the IT department
vendor and product service level support agreements
work environment.
Protocols for converged networks
may include:
H225
H320
H323
H450
Megaco
MGCP
SIP.
Hardware may include:
cable or DSL modems
IP phones
modems
multi-layer switches
networks
other connectivity devices
personal computers
remote sites
routers
servers
switches
wireless devices
workstations.
Software may include:
commercial software applications
communications software
in-house or customised software
networking device operating systems
organisation-specific software
packaged software.
Network may include:
data and voice
internet
large and small LANs
national wide area networks (WANs)
private lines
use of public switched telephone network (PSTN) for dial-up modems only
virtual private networks (VPNs).
Requirements may include:
reference to the business, system, application, network or people in the organisation
simple addition or upgrade to a major new installation.
Factors may include:
codec choice
compression
latency
packet reordering
protocol incompatibility
QoS issues.
Gatekeepers may include:
call manager
media gateway
media gateway controller (call agent)
signalling gateway (SG).
Convergent terminal equipment may include:
analogue telephone adapter (ATA)
IP phones
single line adapter
soft phones:
personal digital assistant (PDA)
wireless fidelity (WiFi).
Real-time multimedia communications may include:
directory look-up
email
file exchange
instant messaging (IM)
presence
video conferencing.
Voice and video conferencing hardware may include:
multi-point control unit (MCU)
session border controller (SBC)
set-top box.
Network congestion solutions may include:
changing configurations
monitoring network traffic and protocols
upgrades.
Attacks may include:
brute force and dictionary attacks
illicit servers
man-in-the-middle attacks
unsolicited calls
viruses
voicemail compromises.
Man-in-the-middle attacks include:
packet sniffing
registration hijacking
TP connection hijacking.

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:
design and implement the infrastructure for enterprise VoIP and UC systems to meet business requirements using converged networks
apply knowledge of current networking, transmission technologies and protocols
evaluate network traffic protocols and bandwidth considerations
configure a UC network
assess the performance of convergent networks
test and verify security access levels.
Context of and specific resources for assessment
Assessment must ensure:
live network
networked computers
network design documentation
equipment specifications
network components.
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:
review of report prepared by the candidate outlining design process undertaken, including challenges faced and how these were addressed
direct observation of the candidate installing and configuring VoIP infrastructure and configuring a UC network
evaluation of system designed and implemented by the candidate in terms of performance and suitability of for business needs.
Guidance information for assessment
Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended, for example:
ICTTEN5201A Install, configure and test a server.

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.