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Nsa Capstone Project

In: Computers and Technology

Submitted By jbod
Words 1195
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Company’s Phone System

Company’s Phone System
ITT Technical Institute Dearborn, MI

Abstract
We have decided to deploy Cisco Systems Inc. solutions for our telephony network. These solutions allow for teleconferencing, video conferencing, call forwarding, call waiting, multiple lines, voicemail, Do Not Disturb, call transferring and mobility with the Cisco IP Communicator. We have decided to use the Cisco DX600 phone for office use at each user’s desk. For a mobility solution, we have gone with the Cisco IP Communicator version 7.0.4. These solutions used together in conjunction with the Cisco Unified Call Manager will provide for a robust telephony network that will allow for communication for employees no matter their needs and situations.

Company Phone System
We will explain our phone network at a high level to show the why our phone network will be more than capable of fulfilling the company’s telecommunication needs.

Desk phone
The Cisco DX600 phone system is designed to allow employees the ability to communicate with peers and customers providing clear, crisp call quality coupled with the ability to participate in video conferencing at the comfort of their desk.
Properties
The Cisco DX600 provides the user with many different abilities to work in conjunction with their peers and customers. The Cisco DX600 comes equipped with a 7” display and resolution of 1024x600 (www.cisco.com1). To compliment this display it also has a 1080p High-definition internal camera. This phone runs on the Android 4.0 Ice Cream Sandwich operating system from Google Corporation. It provides (2) RJ45 10/100/1000 connections in the rear base of the phone. This dual connection setup allows for 1 network location to provide network access to 2 devices. The phone will connect directly to the network drop via RJ45 cat6A cable and then is able to connect to a desktop or laptop computer through the second RJ45 connection utilizing another RJ45 cat 6A cable. This cost savings will be replicated across the company as each desk will only require the use of 1 network access point. The user interface of the phone is complimented by its 24-bit color touchscreen for ease of use to check voicemail, transfer calls, and place conference calls and to start a video conferencing session. This device supports external microphone and speakers for private conversations with the use of a RJ9 headset. It is Wi-Fi capable and also supports Bluetooth devices as well as USB devices. This device will deliver exceptional performance for the company’s telephony requirements.

Cisco IP Communicator
The Cisco IP Communicator version 7.0.4 provides users the ability to make and receive phone calls from their corporate line while away from their desk. The application installs on a user’s laptop and is accessible as long as the user is able to connect to the company’s network via hardwire, Wi-Fi or VPN.
Properties
The Cisco IP Communicator version 7.0.4 provides the mobility aspect with the reliability of the company’s telephony network (www.cisco.com2). A user who may telecommute, travel, or just be away from the office will now be able to access their voicemail, receive calls and close deals while away from their desk. This technology is software installed on the user’s laptop computer and configured in the Cisco Unified Call Manager in conjunction with their desk phone. No more having to keep checking your voicemail while away from the office. You will now be able to receive your calls in real time with your laptop and still only maintain 1 corporate phone number. Cisco IP Communicator (CIPC) provides for all of the teleconferencing options as the Cisco DX600 desk phone, and may be used for video conferencing with either a built-in camera, or external camera connected to your laptop.

Cisco Unified Call Manager Cisco Unified Call Manager (CUCM) is Cisco Systems telephony management server software. It is responsible for managing Cisco Systems telephony devices as well as creating and saving configuration files.

Properties Cisco Unified Call Manager version 9.0 will utilized for the telephony network (www.cisco.com3). Telephony devices are all configured through this server by means of assigning phone numbers to be correlated to device MAC addresses. These configuration files are stored on the server as well as the TFTP servers. These configuration files allow for each device to make and receive phone calls on the network. The Call Manager also allows for telephony devices within the network to make phone calls using extension numbers rather than full 7 and 10 digit phone numbers. This server also is able to route calls through the company from outside lines by dialing a central number and then allowing for extension numbers to connect to specific devices. Call Manager also allows for “masking” of individual numbers by showing the company’s generic phone number when out bound, out of network calls are made. Call Manager also can create and issue certificates for encryption purposes; it is also able to verify externally issued certificates.

Protocols The Cisco telephony solutions we have elected to use, utilize the H.323 and Media Gateway Control Protocol (MGCP).
Properties
The H.323 protocol covers all aspects of multimedia transmissions. It is scalable to fit any size telephony network to include data, video and voice. The H.323 protocol is a step up from the Session Initiated Protocol (SIP). H.323 is more complex to implement, this complexity is what makes H.323 the better choice protocol to run for scalability reasons and Quality of Service (QoS) to prioritize packets sent over the telephony network. It provides point-to-point and multipoint sessions. Media Gateway Control Protocol (MGCP) is used by Cisco Unified Call Manager (CUCM). This protocol allows for the CUCM to control devices at the very edge of multiservice IP packet networks. It also supports for redundant CUCM’s on a single network. If a MGCP gateway loses connection it will revert to H.323 to support basic call handling (www.cisco.com4).

Trivial File Transfer Protocol Servers (TFTP) The Cisco Systems telephony devices require TFTP servers for each and every call that is made on the telephony network.
Properties
The reasoning for this connection for every transmission over the telephony network is that the TFTP servers maintain a configuration file for every telephony device on the network. Once the configuration in Call Manager is complete, the configuration file will be copied to the primary and secondary TFTP servers. This configuration file allows the TFTP server to check for proper configuration and software updates prior to forwarding the request onto the CUCM (www.cisco.com5).

References www.cisco.com1 – Gathered from http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps12956/ps12959/data_sheet_c78-726888_ps12956_Products_Data_Sheet.html

www.cisco.com2 – Gathered from http://www.cisco.com/en/US/products/sw/voicesw/ps5475/index.html And personal experience

www.cisco.com3 – Gathered from http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps556/ps12515/data_sheet_c78-710875.html

www.cisco.com4 – Gathered from Cisco Unified Communications Manager System Guide at www.cisco.com

www.cisco.com5 – Gathered from http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmsys/a02tftp.html#wp1029959

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