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NOTE: DISA is not recommended for use on loop start lines without
disconnect supervision. While DISA will function, Comdial
will not be liable for its performance under any condition
where disconnect supervision is not provided.
Comdial has taken reasonable steps in the design of all product features,
including DISA, which protect against unauthorized or fraudulent access
to, or use of, a system, or which protect against unauthorized, fraudulent
or unaccounted-for access to, or use of, long distance lines. However, no
system is entirely invulnerable or immune from unauthorized or
fraudulent access or use, or unaccounted-for access or use, and therefore
Comdial disclaims any and all liability, and makes no warranty, express
or implied, relating to unauthorized or fraudulent access or use, or
unaccounted-for access or use.
• To make a DISA call to an intercom number,
1. Dial number for DISA line (listen for voice prompt if available).
2. Dial extension number.
3. If station does not answer or is busy you will either hear busy tone
or hear voice prompt if available. If you dial an invalid number,
you will hear error tone.
4. If voice prompt provides dialing codes, dial proper code for
services such as: track, message waiting, or voice mail.
• To make a DISA call to use system features,
1. Dial number for DISA line (listen for voice prompt if available),
2. Dial authorization code (listen for voice prompt if available;
otherwise, hear stutter-style dial tone—remember, the system gives
you only three tries to dial your code correctly),
3. Dial feature code and listen for acknowledgment tone.
NOTE: If you are selecting a line group through DISA for outside
calling, you can raise the audio level on this line when needed.
Do this before you select the line by dialing ✳✳7, and then
dialing 1 for 0 dB, 2 for +3dB, or 3 for +6dB of gain. In some
cases, added gain can introduce circuit instability that presents
itself as a singing sound, which can interfere with dialing and
voice communications. If you experience this condition , select
a lower gain setting.
Using The Other Telephone Features GCA70–250
7 – 18 LCD Speakerphone Reference Manual