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Overview/Description
Gatekeepers play a major part in medium and large H.323 VoIP network solutions. Gatekeepers allow for dial-plan scalability and reduce the need to manage global dial plans locally. This course describes the functions of a gatekeeper and explains how to configure gatekeepers to interoperate with gateways. It also gives an overview of the Cisco Unified Border Element and describes how to implement a Cisco Unified Border Element within an enterprise network. A Cisco Unified Border Element has the ability to interconnect voice and VoIP networks, offering protocol interworking...
Overview/Description
Cisco voice gateway relays high quality voice and fax traffic across an IP network. This course describes the operational modes of a voice gateway and how it fits in the Cisco Unified Communications architecture. It explains the voice gateway functions in each Cisco Unified Communications deployment model and the call legs that are associated with each operational mode. A primary function of the Cisco Unified Communications gateways is to route calls. The process of call routing includes the processing of incoming and outgoing call legs. This course also describes how...
Overview/Description
Path selection is one of the most important aspects of a well-designed VoIP system. High availability is desirable so that there is usually more than one path for a call to take to its final destination. Multiple paths provide several benefits, including redundancy in case of a link failure or insufficient resources on that link and a reduction in toll costs of a call. This course introduces the path selection strategies and methods to implement them. Calling privileges on Cisco IOS gateways are dial plan components that define the types of calls that a phone, or group...
Overview/Description
IP networks must provide a number of services to adequately support voice transmission using VoIP. These services include security, predictability, measurability, and some level of delivery guarantee. Network administrators and architects achieve this service level by managing delay, delay variation (jitter), bandwidth provisioning, and packet loss parameters with quality of service (QoS) techniques. This course introduces the concept of a converged network, identifies four problems that could lead to poor quality of service, and describes solutions to those problems. It...
Overview/Description
Session Initiation Protocol (SIP) is one of the most important voice signaling protocols within service provider VoIP networks and is supported by most IP telephony system vendors. As such, it is an ideal protocol for interconnecting different VoIP systems and networks. An understanding of the features and functions of SIP components, and the relationships that the components establish with each other, is important in implementing a scalable, resilient, and secure SIP environment. This course describes how to configure SIP. It explores the features and functions of the...
Overview/Description
H.323 gateways are among the most common Cisco IOS voice gateways within Cisco Unified Communications Manager environments. H.323 gateways are the endpoints on a LAN that provide real-time, two-way communications between H.323 terminals on the LAN and other ITU-T terminals on the network. H.323 gateways can also communicate with other H.323 gateways. Gateways enable H.323 terminals to communicate with terminals that are not H.323 terminals by converting protocols. Gateways are the point where a circuit-switched call is encoded and repackaged into IP packets. Because...
Overview/Description
Connecting voice devices to a network infrastructure requires an in-depth understanding of the signaling and characteristics that are specific to each type of interface. Digital trunks are used to connect to the public switched telephone network (PSTN), to a PBX, or to the WAN, and are widely available worldwide. This course maps out analog and digital interfaces; examines analog voice ports, analog signaling, and configuration parameters for analog voice ports; and explains how to implement and verify digital trunks. The course also explains the compression schemes that...
Overview/Description
The inherent characteristics of a converged voice and data IP network create challenges for network engineers and administrators in delivering voice traffic. This course describes the challenges of integrating a voice and data network and offers solutions for designing a VoIP network for optimal voice quality, fax, and modem transmission. Successful implementation of a VoIP network depends upon the correct application of dial peers, the digits that the dial peers match, and the services that they specify. This course provides you with a knowledge of dial-peer...
Overview/Description
Network security is an essential network service that spans the entire network. The scope of a network security solution is determined by organizational requirements and potential threats that are evaluated for each network component. To create a secure network, you must know which threats the network has to be protected against. This course discusses rationale for network security, including threats and risks. The course then discusses network components as potential targets and explains how risk assessment is used in a security policy.
Target Audience
Anyone wishing...
Overview/Description
In order to design wireless networks it is important to have an understanding of the Cisco Unified Wireless Network architecture and wireless design principles in order to have the necessary guidelines for successful wireless network design. This course reviews the Cisco Unified Wireless Network including the fundamental architectural concepts and deployment considerations necessary to design a basic Cisco Unified Wireless Network solution. The course also describes wireless networks using controllers; It explains how access points and controllers integrate into...
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