Basic Components of Telephony Networks
A number of components must be in place for an end-to-end call to succeed. These components are listed here and shown in Figure 1-1:
Private or central office (CO) switches
Figure 1-1. Basic Components of a Telephony Network
The next sections describe each of the basic components in more detail.
The two types of edge devices used in a telephony network include:
Analog telephones— Analog telephones are most common in home, small office/home office (SOHO), and small business environments. A direct connection to the public switched telephone ...