User manual

MyPBX-SOHO User Manual
www.yeastar.com Page 30
3.5 Other Settings
3.5.1 DISA
DISA (Direct Inward System Access) allows someone calling in from outside the
telephone switch (PBX) to obtain an "internal" system dialtone and dial calls as
if from one of the extensions attached to the telephone switch. Frequently the
user calls a number DISA number with invokes the DISA application. The DISA
application in turn requires the user to enter his passcode, followed by the
pound sign (#). If the passcode is correct, the user will hear dialtone on which
a call may be placed. Obviously, this type of access has serious security
implications, and great care must be taken not to compromise your security.
Figure 3-23
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