The IP Telephony Design exam tests the candidate's ability to design IP voice facilities over an IP network. This includes the best practices and recommendations of the Solutions Reference Network Design Guide (SRND) for IP Telephony for both the design of new and migrated networks. The expected result is network planners and designers can design Enterprise single-site and multi-site IP Telephony deployments.
The following information provides general guidelines for the content likely to be included on the exam. However, other related topics may also appear on any specific delivery of the exam.
Candidate can determine the relevant critical business and technical needs in order to develop a Cisco IP Telephony design framework
- Determine which factors affect the choice of signaling type
- Decide which business considerations are relevant to the IP Telephony design
Candidate can choose the correct topology to meet the stated requirements
- Recognize the characteristics/limitations of a single-site IP Telephony deployment
- Recognize the characteristics/limitations of a multi-site centralized processing IP Telephony deployment
- Recognize the characteristics/limitations of a multi-site distributed processing IP Telephony deployment
- Recognize the characteristics/limitations of distributed cluster IP Telephony deployment
Candidate can design the appropriate dial plan to support design requirements
- Explain the benefits of hierarchical and scalable dial and numbering plans
- Explain the factors that determine route patterns in an IP telephony solution
- Explain the issues surrounding Directory Number (DN) design
- Explain the usage of pilot numbers in a voice mail solution
- Explain the effects on the DN design of integrating a voice mail solution
- Explain what factors would indicate the requirement for a hunt group
- Explain which issues would impact the use of translation patterns and transformation masks
- Explain why route groups are deployed
- Explain which calling issues would be resolved through CSS and partitions
Candidate can select the appropriate hardware and software components to support the proposed design
- Determine which high availability issues would influence the selection of network hardware and software
- Determine how in-line power requirements influence hardware and software selection
- Determine how CAC issues would influence hardware and software selection
- Determine how a given supported IP telephony design models influences cluster hardware and software selection
- Determine how PSTN connectivity issues influence hardware and software selection
- Determine how conferencing and transcoding influence hardware and software selection
- Determine how MoH issues would influence hardware and software selection
- Determine how wireless IP telephony influence the selection of hardware and software selection
- Determine how analog telephony devices would influence hardware and software selection
Candidate can create a design that supports the traffic needs of a converged network
- Determine how LAN application requirements influence LAN design and QoS
- Choose the appropriate LAN and QoS design elements given LAN application requirements
- Determine how WAN bandwidth requirements influence network design and QoS
- Choose the appropriate WAN and QoS design elements given WAN application requirements
- Determine how CODEC types influence network design
- Determine how VoIP packet size influences voice quality
- Choose how CAC requirements will influence WAN design and QoS
- Determine how CAC requirements influence LAN design and QoS
Candidate identify the security concerns relevant to an IP telephony design
- Determine if an existing customer security plan will influence IP telephony design
- What affect will the existing security have on the planned converged network
- What affect will the converged network have on required enterprise security
IP Telephony Design (IPTD) is the recommended training for this exam.
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