Paging

Let's take the example of paging into the IP telephony environment. Paging is a traditional PBX feature that was created to contact people in a target environment and provide specific information to them. A typical page could be any of the following All employees in the packaging department please report to the west door. This is a page that could go across an intercom system to a single speaker, or to a set of PBX phones. Rick, please come to register 7. This is a page that can likely go...

The IPT Environment

The PBX connectivity environment is replicated precisely in a pure IP telephony environment. Each of the connectivity points previously discussed and shown in Figure 2-1 are duplicated on the IP network, using IP infrastructure components. As shown iiFigure 2-2, an Ethernet (or network) switch on the corporate LAN provides the connectivity for the IP clients, such as desktop and laptop workstations. These clients (also referred to as devices) are designed to interface to the IP network by using...

The PBX Environment

In a corporate telephony environment, there is a constant methodology for how voice technology works. As shown in Figure 2-1. a PBX is a self-contained environment designed to provide all the necessary features, functionality, and connectivity required within a cabinet (or series of cabinets). Within the cabinets of a traditional PBX are line cards, trunk cards, a CPU (possibly two, if redundancy is required), a TDM switching environment, and various card-sets that handle ringing, tone...

Figure 36 Traditional Flash Cut from Old PBX to a New PBX

In this example, training for new users begins when they get their new phone. The problem is that when they get their new phone, the new system is already live and in production. This allows for only a short span of time where the telecom organization can focus on training users before they have to move on to the task of maintaining and managing the system, i.e., keeping it up and running, changing user configurations, handling employee moves, adds and changes, etc. An easier approach to...

Vra

The purpose of a VRA is to determine precisely what impact the data network is going to have on voice. When we place voice on the existing IP network, what is going to happen In other words, this is just proper planning taking into account all the information we have at our disposal, and using it correctly. It starts with having the right information available in the first place. The easiest and safest way to understand the impact of convergence is to test it. Put a sampling of voice sessions...

Secondary Schools

Consider a high school that implements an IP telephony solution. Rather than focus on cost reductions (which incidentally, will be realized anyway), many high schools today are focusing on the specific challenges they face. Frederick County Public Schools in Virginia, for example, chose to deploy IP telephony as a means of enhancing the process teachers use to take attendance and issue hall passes. This example will be discussed in greater detail in Chapter 5. Focusing on the Few, but it is...