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LAST NUMBER REDIAL
A momentary press of the "REDIAL" button will redial the last number dialed. This button is
inoperative if the ISDN light is on. That is if a call is already in progress. If the unit is
switched off the last number dialed will be forgotten.
MEMORY REDIAL
It is possible to save up to 12 frequently used numbers in non volatile memory. The Software
Configuration section of this booklet explains how to save these numbers.
To dial one of these previously saved numbers, press and hold "REDIAL" . Then momentary
press the "Keypad number" of the stored location. Then release the "REDIAL" button.
SIGNALING THE STUDIO USING DTMF TONES
Once a successful call has been established with the studio it is possible to signal them using
DTMF tones. This is done by holding the 'HOLD TO DIAL' button and pressing any number
on the dial. The corresponding DTMF tone will be sent to the studio all the time both buttons
are held.
Similarly the studio can signal the unit by sending any DTMF tone. This tone will be heard in
the headphones and will cause the front panel sounder to sound if it has been enabled. See the
software configuration section of this booklet.
SETTING UP THE MIXER
The GSGC4 has only 2 input channels, one mic and one tape, while the GSGC5 has 2 extra
mic channels. Each channel has an associated on off push button and a rotary level control
associated with it. The rotary controls are used to balance the sources. A small column PPM
is provided to help with the balance. A compressor / limiter follows the PPM so that the
correct level is always sent to the studio.
THE HEADPHONES
Normally the mixer output can only be heard in one ear and cue programme in the other.
(See Hardware Configurations) Individual volume controls are provided for each of these
signals.
USE WITH ANALOGUE LINES
In the absence of an ISDN line the cue output becomes a cue input. This is transformer
coupled and can be connected directly to an analogue control line and the studio can be heard
in the headphones using the headphone volume control. Also the mixer output is transformer
coupled and can be connected to a music line.
The DTMF generators and detectors are still operative in this mode so it is possible to use
them to signal a suitably equipped studio.
