MyPBX U200 Administrator's Guide
www.yeastar.com
Page 104
Figure 6-67
Note:
If DID is not configured here, all the calls via this trunk will show the DNIS
instead of the original caller ID
6.7.6 DISA
DISA (Direct Inward System Access) allows someone calling in from outside the
telephone switch (PBX) to obtain an „internal‟ system dial tone and make calls as
if they were using one of the extensions attached to the telephone switch. To use
DISA, a user calls a DISA number, which invokes the DISA application. The DISA
application in turn requires the user to enter a PIN number, followed by the
pound sign (#). If the PIN number is correct, the user will hear dial tone 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 6-68
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