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Strata CT Standard Telephone User Guide November 2001
Direct Inward System Access (DISA) Features
➤
To make an outgoing call with DISA
1. From outside the system, call
the DISA Exchange line
telephone number:___-
_____.
See the System
Administrator for this
number.
2. Listen for repetitive ringback
tone, then listen for dial tone.
Try again if you hear busy
tone.
The dial tone is present for 10 seconds to allow direct
dialling of a station internal number or Exchange line
access code. If a number is not dialled, the system
automatically causes the DISA Exchange line to ring at
telephones as a normal incoming call. Then, if the call is
not answered within 15 seconds after the ringing starts, it
disconnects.
3. Dial an Exchange line
number or line group access
code. See Table 1 on page
36.
4. If a DISA security code is
required (see the System
Administrator), dial the code
and listen for Exchange dial
tone.
If the correct code is not entered, the call is disconnected.
...or if a DISA security code
is not required, you hear
Exchange dial tone.
A timer tone plays (approximately four mins.) that both
parties hear after the call was made.
5. Press
0
to reset the timer for
four more minutes;
otherwise, the call
disconnects approximately
one min. after the tone.
6. Dial a telephone number.