Installation guide
374 Planning and Installation Guide ShoreTel 14.2
International Planning and Installation DID Numbers
A
Each site can have a maximum of ten emergency numbers to accommodate locations where multiple
emergency service numbers are required.
For more information about emergency numbers, see the appendix in the ShoreTel System
Administration Guide about emergency 911 operations.
DID Numbers
DID numbers are related to the trunk group in which they are associated. You should strive to match
the last digits of the DID number to the user’s extension number.
Carrier Codes
Certain countries provide an option for requiring one or two numbers that the ShoreTel user must press
after the trunk access code (usually a 9 or an 8) and before an area code or another nation’s country
code. The purpose of this option is to get the lowest-cost route for long-distance or international calls.
When the user presses this code, the call goes out a trunk to a carrier that the system administrator
has specified. If the user makes a long-distance or international call without this code, the ShoreTel
system selects the trunk.
This section defines the carrier codes that certain countries use and lists the numbers that the user
presses to utilize the associated trunks. The two definitions that readers need for this description are
as follows:
Carrier code: This number specifies a carrier. The system administrator assigns this code to a trunk
group so that calls go to that carrier when the user prepends the country code to a phone number.
System administrators in applicable countries must know the code for the carriers they want to give
preferential business. The user does not see this carrier code.
Country code: This country code is a nation-wide number that a user presses to direct long-distance or
international calls to the carrier that the carrier code specifies. This country code is not the number that
callers from outside a country use to reach the country. For example, the country code that callers
outside of Singapore use to reach that country is 65, but from inside Singapore, the country code that
a caller presses to direct an international call to a specific carrier is 01.