Direct Inward System Access (Disa) - Aastra DT390 User Manual

invoked during or after an ongoing conversation. The external line can be held
for a limited period of time.
13.5.1 Order
To order call tracing during an ongoing conversation, do the following:
1. Press R.
Wait for dial tone.
2. Press *39#.
The system acknowledges with different tones whether the tracing request was
accepted or rejected.
13.6

Direct Inward System Access (DISA)

If you are assigned to use the DISA function, and you are working externally,
you can call your office and get access to an external line in order to make
business calls. Business call will be charged your office extension number or
an account number. You will just be charged for the call to the office. The
external phone must be of push button type provided with the keys # and *, or a
mobile phone adapted for dial tone pulses (DTMF).
After a completed DISA call you must hang up before a new DISA call can
be made. Depending on the type of authorization codes and account codes,
different procedures are used. These are presented in the following sections.
13.6.1 Common Authorization Code
When using a common authorization code, do the following:
1. Call the DISA function at your office.
Wait for dial tone.
2. Press *72*.
3. Dial the Authorization Code and press #.
Wait for dial tone.
4. Dial the external number.
13.6.2 With Individual Authorization Code
When using an individual authorization code, do the following:
1. Call the DISA function at your office.
Wait for dial tone.
1424-EN/LZT 103 087 Uen A3 2008-11-21
Note: Germany, The Netherlands, and Sweden, press *75*; North
America, press *6*
Other Useful Features
69