Chapter 3. System Features Section 700 - Operation
Page 3-22 DBS Manual - Revised April 2000 DBS-2.3/9.2-700
Direct Inward System Access (DISA)(All Versions)
Description
Direct Inward System Access (DISA) gives off-site users dial-in access to the
DBS. Users access DISA by dialing a 7-digit number assigned to a DISA
trunk.
For security reasons, one incoming DISA code and two outgoing DISA codes
can be assigned. If an incoming code is assigned, it must be entered as soon as
the DISA trunk answers. An outgoing code must be entered before the user
dials an outgoing call.
Operation
To make a DISA call to an extension:
1. Dial the DISA trunk number.
2. Once you hear DISA dial tone from the DBS, enter the 4-digit DISA code
(if an incoming DISA code is assigned). If the incoming DISA code is not
programmed, you can proceed to the next step.
3. Dial the extension number.
To make a DISA call to an outside number:
1. Dial the DISA trunk number.
2. Once you hear DISA dial tone from the DBS, enter the 4-digit DISA code
(if an incoming DISA code is assigned). If the incoming DISA code is not
programmed, you can proceed to the next step.
3. Dial #7 plus the 4-digit Outgoing DISA Code.
Two outgoing DISA codes are assigned. Either may be used after the #7.
4. Dial the trunk group number you want to use (81-86 or 9).
5. Dial the desired telephone number.
Related Programming
• FF1 (System): Direct Inward System Access (DISA) ID Code