User guide

System Administrator’s Guide – Release 7.5
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Toll Free 1-866-ALLWORX • 585-421-3850 • www.allworx.com
Revised: April 9, 2013
Page 124
14.2 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 but 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
• All Digital Lines & CO Lines
• All Digital Lines, CO Lines & SIP Gateways
• All SIP Gateways
• All SIP Proxies
• All Trunk Devices
Note: Calls can be routed to Remote Allworx sites in order to use the remote sites’
outside lines. However, remote sites should not be the only method available for
external calls to be placed. Loss of Internet connectivity between the local site and
the remote site (at either end) may disable the ability to place calls including 911
Emergency calls.
Note: The Digital Line Service Group is only available on Allworx 24x and 48x servers.
Additional Service Groups can be defined by the System Administrator to control the
use of services or set of services for certain dialed calls.
14.2.1 Exceptions
Dialing Rules and Service Groups are only used for Call Appearance, not for Line
Appearance calls. This is because Line Appearance calls access outside lines,
directly.
The server’s dialing rules utilize the North American Numbering Plan (NANP). If your
Allworx server is located in an area that does not use NANP, then access outside lines
using Line Appearance PFKs or by dialing ‘9#’. Lines can also be accessed by dialing
9 then the phone number. The system will wait six (6) seconds before initiating the call
to make sure that the user has finished dialing. To initiate the call immediately, press
the # key after the last phone number digit.
14.2.2 North American Numbering Plan Administration (NANPA)
The Allworx server routes calls using the Service Group that has been assigned to the
type of number dialed. When enabling NANPA or disabling it changes the types of
numbers dialed that the system supports.