Ericsson 4422 - Manual (Page 72)

Other Useful Features
BusinessPhone – Ericsson Dialog 4422 IP Office 72
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 costs
for the phone call to your company. The other costs will
automatically be placed on your extension number or on a special
project.
Note: To use the DISA function, your extension has to be
authorized by the system administrator.
To activate the DISA function, you have to change the
default password from “0000” to a personal one, see
section “ Change Password ” on page 62.
You can also divert calls from your office extension to your external
position, see section “ Call Forwarding ” on page 44. During the
procedure you will be prompted for your password. z
Enter the public number of your company.
z
Followed by the DISA directory number.
Ask the system administrator for the defined DISA directory
number.
Listen and follow the voice announcements.
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 73. 0 z
Enter the digit(s) for external line access and the desired
public number.
Note: Which digit to press for external line access depends
on the configuration of the system.
Or:
Use the External Diversion function.
Procedure, see section “ Call Forwarding ” on page 44.
Note: If you program a new diversion address, remember
to reset it when you return to your office.