Intro to Cisco IP Telephony Solutions By Prof

Intro to Cisco IP Telephony Solutions By Prof. Yousif @ Valencia Community College 1

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Let us get acquainted! 1. 2. 3. 4. 5. 6. 7. 8. What is your name and how would you like us to address you? Is this your first networking/telephony class? Are you taking any other networking/telephony classes? What is your background in networking/Telephony? Are you a career changer? Why did you sign up for this class and what are your expectations? What is your next step in technical training and industry certification after finishing this class? Interests, Academic Goals, and Industry Certifications 3

What is IP Telephony • General term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). www. whichvoip. com/voip_dictionary. htm • The transmission of voice and fax phone calls over data networks that uses the Internet Protocol (IP). IP telephony is the result of the transformation of the circuit-switched telephone network to a packetbased network that deploys voice-compression algorithms and flexible and sophisticated transmission techniques, and delivers richer services using only a fraction of traditional digital telephony's usual bandwidth. www. voip-architecture. com/glossary. html 4

What is IP Telephony • IP telephony combines different types of communications-such as data, voice, and video-over a single packet cell-based infrastructure. IP telephony extends the value of the network with these nontraditional applications. By combining different types of traffic on a single network connection, small and medium-sized businesses and small branch offices can dramatically reduce the costs of their voice and data networks. www. spacespin. com/glossary. html • Circuit-Switched VS. Packet Switched networks 5

IPT Applications • An IPT solution offers the option to implement XML applications to users’ phones. These applications can be customized to an organization’s specific needs. A popular application, Unified Messaging, will allow users to retrieve their voicemails via email as well as the reverse – emails read to you while checking voicemail. This provides users flexibility regarding message retrieval resulting in improved communications and ultimately better care for customers. • • Another Example: http: //www. phonetop. com/phonetop 3. nsf/20040310 IPT Applications Videos 6

Key Benefits of Vo. IP • Elimination of expensive leased lines, PBXs and PBX lines and PSTN lines with recurring monthly costs • Ease of adds, moves and changes. • Elimination of costly tie lines between multiple PBXs • Reduction of supported PBXs resulting in the reduction of annual maintenance and support contracts • Reduction of costly long distance charges between branch offices via toll-bypass – sending voice traffic over the existing data network 7

The different Implementation of Vo. IP 8

Considerations for End-to-End Vo. IP Solutions Directory Services, Web Content, and Unified Messaging Using Clustering to ensure the availability of resources to handle call processing Ensuring quality and reliability of the voice network 9

CIPT Design Objectives PSTN is available in the case of the IPWAN going down or becoming congested 10

Cisco IPT Components CCM is the softwarebased IP call Processing Engine Digital Gateway: Voice T 1 to connect legacy PBXs. Analog Gateways: Connect legacy analog telephony equipment such as analog phones and faxes 11

Cisco AVVID Architecture 12

Cisco IP Phones Cisco IP Phone Documentation 13

Cisco IP Phone 7970 • IPT Applications Videos 14

2600 Gateways 15

Switches 16

Lab 1 Physical Connections and Lab Setup 17

Cisco Call Manager 18

The System Menu • • • Server: Specify the IP address of the server Cisco Call. Manager: Set propertied for Call. Mangers in the same cluster “share the same database”. Example: port numbers Cisco Call. Manager group: Each group can have up to three Call. Mangers. One serves as the primary and the other members of the group serve as backups Date/Time group: Define time Zones for different devices. Device Defaults: Default characteristics for each type of device within a call manager cluster. Region: Used to specify the voice codec used for calls within a region and between regions. The voice codec is used to determine the maximum amount of bandwidth used per call Device pools: Used to apply common characteristics for a group of devices Enterprise Parameters: Settings that apply to all devices and services within the same cluster. That is where a newly installed Call. Manager gets the initial configuration values from. Location: Locations used to implement call admission control in a centralized call processing system. Call admission control is used to regulate voice quality by limiting the amount of bandwidth available for calls over links between locations. 19

The Route Plan Menu • • • Partition: A list of route Patterns Calling Search space: Ordered list of route partitions Route Filter: Route filters, along with route patterns, use dialed digits string to determine how a call is processed Route Group: A list of ordered gateways Route List: Assigns a set of route groups to a route pattern and determines the order in which the route groups are accessed. Route Pattern: A route pattern is a string of digits or an address and set of associated digit manipulations that can be assigned to a route list. Route patterns are used in conjunction with route lists and route filters to direct calls to a specific gateway and perform digit manipulation (include, exclude or modify specific digits). Translation Patterns: Use to manipulate dialed digits before routing a call. Used to configure Private Line Automatic Ring Down (PLAR) External Route Plan Wizard: An easy way to configure external routing to PSTN, to PBXs, or to other CCMs. Route Plan Report: Lists all route patterns, translation patterns, conference numbers, call pick up numbers, and call park numbers. 20

The Service Menu • • Used to configure CCM to interface with voice mail servers. Used to configure CCM to interface with conference bridges which allows several simultaneous, multi-party conference Use to configure CCM to interface with a Media termination point (MTP) Used to configure transcoders. Transcoders Are used to convert from one compression type to another (G 711, G 723, and G. 729). Used to configure Service Parameters where you can add or delete services on the selected server (For example TFTP service). Used to configure Music on Hold Used to configure Media Resource Group: MRG is a logical group of transcoders MOH servers and conference bridges. 21

Voice Compression 22

Voice Compression Example 23

The Feature Menu • Used to configure features such as – Call Park: Place a call on hold at a specific extension. The parked call can be retrieved from any phone in the cluster – Call Pickup: Allows you to answer a call that comes in on a directory number that is different from yours – Cisco IP Phone Services: enables XML applications on the phone – Meet-Me number: Multiuser meetings. 24

The Device Menu • Here you can add, delete, or search for devices such as Phones, gateways, and gatekeepers 25

The User Menu • Maintaining and displaying CCM’s users • The global directory maintains the associations of devices with users. 26

The Application Menu • It is through the application menu that you can install plug-ins to extend the functionality of the Cisco Call. Manager. Examples: – Cisco Web Attendant Plugin: Used by a receptionist to answer and transfer calls – JTAPI Plug-In: Allows computers to host applications that can access Call. Manger via Java Telephony Application Programming Interface 27

The Help Menu • “Page” sensitive help is available. If you need help on a particular page, you will be linked to the online help page that corresponds to the displayed page. 28

Context and Index Help • CCM Administration Guide: Step-by-Step instructions to configure main menu items and submenus. • CCM System Guide: Information on Cisco IP Telephony solutions, CIPT components, and CCM Clusters. • The CCM Serviceability: Used in monitoring and troubleshooting CIPT. 29

Lab 2 Network Configurations 30