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Category: 642-415

Exam 642-415: UCAD – Unified Communications Architecture and Design

How can this be accomplished for local calls from Redmond?

Ajax has completed its IP telephony rollout. The legacy PBX has been removed, and the entire phone system is now on IP using Cisco Unified Communications Manager for call processing control.

Ajax has recently acquired Best Auto Accessories in Redmond, WA. Best is a small distributor of automobile parts and accessories. Best has 36 office employees and 48 warehouse workers in a
single building. The Best phone system consists of a four-year-old key system. All calls enter the company through the company operator who then uses the overhead paging system to inform users of incoming calls.

Ajax plans to integrate Best as a remote site into the new Cisco IP telephony system at Ajax. The 36 office employees will be converted to IP phones with DID along with two phones in the warehouse that will not be DID. All IP phones will register with the Cisco Unified Communications Manager cluster at the Ajax central campus.

Ajax plans to connect with Best via a point-to-point circuit. The Redmond office will maintain external connections to the PSTN but will use the connection with Ajax to carry internal calls and for Internet connectivity. Internal calls crossing the WAN will use a G.729 codec with 20ms payload for bandwidth savings. Call Admission Control will be implemented using locations. The voice-mail system only supports the G.711 codec and will be centralized with the Cisco Unified Communications Manager.

If connectivity to the PSTN is lost in Redmond, external calls should be routed through the PSTN gateway at the Ajax location. This should be transparent to the user, so a local call should still only require seven-digit dialing. How can this be accomplished for local calls from Redmond?

what locations will DSP resources need to be configured to minimize WAN traffic and support conferencing and t

Ajax has decided to open regional sales offices to put their sales staff closer to their customers. The new offices are located in Oakland, Denver, Chicago, and New York. The Northwest and Southeast regional sales offices are located the Redmond and Atlanta facilities. The sales offices will connect to the Ajax campus via a Frame Relay network. Each site will have a PSTN gateway for local and emergency calls. All calls to and from the regional offices as well as long distance calls should use the IP WAN as much as possible. Call processing and voice mail will remain centralized i Atlanta. H.323 gateways will be deployed at the remote sites for PSTN access.
The Ajax central campus and regional sales offices will use the G.711 codec locally. The G.729 codec will be used when calls cross the WAN, and cRTP will be implemented on each link. The voice-mail system only supports G.711.
In what locations will DSP resources need to be configured to minimize WAN traffic and support conferencing and transcoding?

which two questions would you ask to obtain the informatic needed for the design of the IP telephony network?

Ajax Auto Components manufactures automobile parts for the service and retail markets. The Ajax corporate campus i located north of Atlanta, Georgia. Ajax is presently using an Avaya PBXforits campus phone system that uses DCS signaling. The PBX cannot support all the new features that Ajax requires, so the company has decided to change its system from traditional TDM to IP telephony. The campus currently has 942 employees in three two -story office buildings, a single story R&D facility, and a manufacturing building. The five buildings are all connected via an FDDI
ring. The campus is divided by County Line Road, which is the actual division between Fulton and Cobb counties. The office buildings are located on the east side of County Line Road, in Fulton County; the RSD building and manufacture plant are located on the west side County Line Road in Cobb County.

It will be your job to help the company migrate from the traditional PBX system to a Cisco Unified Communications Manager system on a converged voice and data network. You are investigating the network at Ajax as the first step in designing a converged network. In a meeting with the telephony services manager and the data network manager, which two questions would you ask to obtain the informatic needed for the design of the IP telephony network? (Choose two.)

what locations will DSP resources need to be configured to minimize WAN traffic and support conferencing and t

Ajax has decided to open regional sales offices to put their sales staff closer to their customers. The new offices are located in Oakland, Denver, Chicago, and New York. The Northwest and Southeast regional sales offices are located the Redmond and Atlanta facilities. The sales offices will connect to the Ajax campus via a Frame Relay network. Each site will have a PSTN gateway for local and emergency calls. All calls to and from the regional offices as well as long distance calls should use the IP WAN as much as possible. Call processing and voice mail will remain centralized i Atlanta. H.323 gateways will be deployed at the remote sites for PSTN access.
The Ajax central campus and regional sales offices will use the G.711 codec locally. The G.729 codec will be used when calls cross the WAN, and cRTP will be implemented on each link. The voice-mail system only supports G.711.
In what locations will DSP resources need to be configured to minimize WAN traffic and support conferencing and transcoding?

what two options must you include in your design?

In the past, Ajax has experienced several phone outages, one of which lasted over seven hours when the company’s current PBX had a software crash. Telephone communications are critical, so Ajax would like to design the IP telephony solution to be scalable and highly available.

In designing a Cisco Unified Communications Manager clusterfor highest availability, what two options must you include in your design? (Choose two.)

What is the maximum number of simultaneous MoH messages that will be streaming at anytime?

Ajax has nine departments plus Coiporate personnel with a total of 822 phones. Each department has a separate MoH message. All the departments would like to play their messages when they place a caller on hold. A standard corporate message is played when people outside of these nine departments place a user on hold.

What is the maximum number of simultaneous MoH messages that will be streaming at anytime?

what must be provided by an access layer switch?

Based on information discovered during the investigation phase of the design, it has been decided that the proper deployment model for Ajaxis single-site call processing. The access layer devices will be placed in the IDF closets, the distribution layer devices will be placed in the MDF closets, and the core will be deployed in the computer room.

In the three office buildings, each floor has an IDF, which services approximately 70 to 80 users. Each of the R&D and Manufacturing buildings also has an IDF. Building 1 also houses the MDF in the basement. Ajax is currently using Toke Ring and an FDDI backbone. The network is to be Aiotestking.com
migrated to a 100BaseT or faster Ethernet network.
Ajax has had many network outages in their current network and is concerned with network availability, especially because the phone system will now be residing on the same network.

In an IP telephony solution, what must be provided by an access layer switch?


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