Release 1.05
Digium, Inc.
Page 45
Chapter 3: Telephone System Configuration
Adding Service Providers
Even though you are using Asterisk on the Asterisk Appliance, you must
register with a service provider in order to connect to the Public Switched
Telephone Network (PSTN). Access to the PSTN gives you the ability to
place calls to telephone numbers no matter how they connect to the PSTN
(VoIP or standard analog system). Asterisk generically identifies the
carriers used to reach your local phone carrier, long-distance carrier, or
VoIP provider as service providers. The service providers may use analog
lines for your local carrier or IP connections for your VoIP carriers.
Figure 11: Service Providers
