AASTRA 4223 Professional for BusinessPhone User Guide - Manual (Page 94)

Other Useful Features
BusinessPhone — Dialog 4223 Professional / Dialog 3213 94
Direct Inward System Access (DISA)
If you are working externally and you have the need to make
business calls, call your company and use the company PBX to
make an external call to the desired party. You just pay the cost for
the phone call to your company. The other cost will automatically
be placed on your extension number or on a special project.
Note: To activate this function, you have to change the
Default Password from 0000 to a personal one. Which code
to use and how to change it, see section “
Change
Password ” on page 77.
You can also divert calls from your office extension to your external
position, see section “
Call Forwarding ” on page 50. During the
procedure you will be prompted for your Password. z
Enter the public number of your company,
z
followed by the DISA number.
Ask the system administrator for the defined DISA number.
Note: If you want to register the call on an Account
Number, you should use the Account Number procedure
before you enter the external number, see section “
Account
Number ” on page 95.
z
Enter the external number.
Or:
Use the External Diversion function.
Procedure, see section “
Call Forwarding ” on page 50.
Note: If you program a new diversion address, remember
to reset it when you return to your office.