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Direct Inward System Access (DISA)
28 Strata DK Digital Single Line Telephone 5/99
➤ To make an outgoing call with DISA
4. If you hear busy tone,
press
.
If the call is not answered after 6 rings or 24 seconds, whichever
occurs first, you hear busy tone.
5. When you hear dial
tone, call again.
1. From outside the
system, call the DISA
CO 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 dialing of a
station internal number or CO line access code. If a number is not
dialed, the system automatically causes the DISA CO 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 a CO line
number or line group
access code. See
Table 4 on Page 46.
4. If a DISA security
code is required (see
the System
Administrator), dial
the code and listen for
CO dial tone.
If the correct code is not entered, the call is disconnected.
...or if a DISA
security code is not
required, you hear
CO dial tone.
A timer tone plays (approximately four mins.) that both parties
hear after the call was made.