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Strata CT Digital Telephone User Guide November 2001
43
Features Direct Inward System Access (DISA)
DISA Calls - External
1. From outside the system,
call the DISA Exchange
line telephone number.
You hear a ringback tone signal, then an internal dial tone
for 10 seconds.
If you do not dial within 10 seconds, the system
automatically rings the DISA Exchange line as a normal
incoming call. Then, if the call is not answered within 15
seconds after the ringing starts, it disconnects.
2. When you hear dial tone,
dial an Exchange line or
Exchange line access code
You hear dial tone. If you do not hear dial tone, you must
also dial a DISA security code.
...or dial an Exchange line
or Exchange line access
code and then a DISA
security code. See Table 14
on Page 156 access codes.
You hear dial tone.
Note See the System Administrator for the DISA
security code number. If the correct code is not
entered, the call disconnects.
3. When you hear dial tone,
dial a telephone number.
If set in system programming, both parties hear a warning
tone approximately 4, 10, or 20 minutes after the call was
made. Press
0
to reset the timer each time the tone sounds
(for an additional 4, 10, or 20 minutes). If you do not press
0
, the call disconnects approximately one minute after the
tone.