System information

System Administration Guide

300 Main Street • East Rochester, NY 14445 • Toll Free 1-866-ALLWORX • 585-421-3850 • www.allworx.com

Revised: March 28, 2007

Page 44

11 Dialing Rules and Service Groups

11.1

Background Information

This section describes the procedures the Allworx system follows for placing outbound calls.

11.1.1 Dialing Rules

As a user dials digits on a phone, the system collects the digits one at a time. How does it know when it

should wait for more digits (because the user is dialing slowly) or when it should take the digits it has and try

to make a call with them? The rules the server follows are called Dialing Rules. Dialing Rules specify to the

Allworx

server what digit sequences are valid to be dialed out on the public phone network.

Examples:

 When dialing a local number, you do not normally dial 1 and the area code. So, the system should

collect the first 7 digits dialed and then try to make the call. The server should not be waiting for more

digits.

 When you dial a long distance number, you normally dial 1 plus the area code and then the 7 digit local

number. The system needs to recognize this case distinctly from the local number case and know to

collect all 11 digits before trying to make the call.

In addition, some local calling areas require an area code to be dialed without the 1 prefix in order to properly

dial some numbers. This implies that these rules may vary depending on the local calling area where the

Allworx

server is installed.

11.1.2 Home Area Code

Some features of the Allworx

server and phones (example: redialing from call history and when mapping

numbers to 11-digit form to SIP proxies) require the knowledge of the home area code. Therefore, this

information is a required part of the dialing rules to enable those features to operate as expected.

11.1.3 Service Groups

The server can use a variety of services to place outside calls such as: Digital Lines, CO lines, SIP

Gateways, and SIP Proxies. Some of these services may be optimum for particular types of calls. For

example, your SIP Proxy might be the least expensive way to make long distance calls, however your CO

lines are best for local calls.

A Service Group is a collection of services that can be used to place outside calls. The server creates

several Service Groups automatically:

 All Digital Lines & CO Lines

 All Digital Lines, CO Lines & SIP Gateways

 All Digital Lines, CO Lines, SIP Gateways, and SIP Proxies

 All SIP Gateways

 All SIP Proxies

Note: The Digital Line Service Group is only available on the Allworx 24x.

Additional Service Groups can be defined by the System Administrator to customize mappings of dialed

numbers to any service or set of services.