User guide

System Administrator’s Guide – Release 7.5
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Revised: April 9, 2013
Page 123
14 Dialing Rules and Service Groups
This section describes the procedures the Allworx system follows for placing outbound
calls.
14.1 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 Dialing rules
are the rules the server follows. Dialing Rules specify to the Allworx server what digit
sequences are valid for dialing 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.
14.1.1 Emergency Dialing
For sites that are using PBX mode or sites that are using PBX mode in the factory
default configuration, users must dial the outside line access digit (e.g. 9) when placing
external calls including when dialing emergency calls (e.g 9 911). The Allworx Server
Administrator can configure the system to permit emergency calls to be dialed directly,
without the outside line access digit (e.g. 911).
1. Navigate to Phone System > Dial Plan. Go to the External Dialing Rules
section, locate the Emergency table, and click the Modify link for Emergency
rules.
2. Check the Dial Direct box.
3. Click Update, and then reboot all phones. 0.
14.1.2 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.