AASTRA DT390 for BusinessPhone User Guide EN - Manual (Page 75)

C ORDLESS P HONE FOR B USINESS P HONE
75 1424-EN/LZT 103 091 Uen D 2010-02-12
14.2 Direct Inward System Access (DISA)
If you are assigned to use the DISA function, you can work from outside
the office network and still have all your outgoing business calls charged
to your office extension number or an account number.
You will only be charged for the call you have to make to the office in
order to get access to an external line through the office network.
Note: The external phone must be of push button type provided with the
keys # and *, or a mobile phone adapted for dial tone pulses
(DTMF).
You have to initiate DISA for every individual business call you make.
This means that you have to terminate a DISA call before you can make
a new DISA call. The procedure varies depending on which authoriza-
tion and account codes you use, see below.
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.
You can also divert calls from your office extension to your external posi-
tion. During the procedure you will be prompted for your password.
Note: If you program a new diversion address, remember to reset it
when you return to your office.
14.2.1 Calling With an Authorization Number
To make a DISA call using an authorization number, do the following:
1. Enter the public number to your company, followed by the DISA
number. Ask the system administrator for the 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.
2. Follow the recorded instructions.
3. Press the code for external line access.
The external line access code is configured in the system. Contact
the system administrator.
4. Dial the desired public number.