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VCC-28 Key Pad
The VCC-28 key pad (see Figure F page 6) has five hardware keys that control certain functions of
the key pad. These keys are illuminated when they are active.
A
Key Latch: Changes the number keys (1 thru #) from momentary into latching action. When the
Key Latch key is illuminated (latched), the number key chosen (illuminated) will stay latched
"ready". When the operator initiates PTT from the VCC-28 keypad, headset adapter, footswitch, or
software, the chosen channel will transmit. The same channel will stay ready until that key is
pushed again to unlatch it, another channel is chosen, or the Key Latch function is turned off. IE:
The operator wants channel 5 to stay ready for an extended period. He/She pushes the Key Latch
key (which illuminates), then selects the 5 key (which illuminates). The operator can now use the
PTT function from the VCC-28 keypad, headset adapter, footswitch, or software as needed to talk
on channel 5. When he/she is done with channel 5, another channel can be chosen and latched
ready, or the Key Latch key can be pushed and all keys will revert to momentary action.
B
Head Set: Enables –or- disables the wireless headset. When this key is illuminated (latched), all
available audio input is routed to the headset. When the Head Set key is not illuminated, the VCC-
28 routes the USB audio to the external speakers, and the incoming phone audio to the phone
handset. The headset PTT function is activated only when the Head Set key is illuminated
(latched).
C
Num Lock: Toggles the number keys (1 thru #) between numerical –or- programmed hot key.
This key works the same as a traditional keyboard Num Lock key. When it is illuminated (latched),
a number key acts like a numerical key and does not produce any programmed hot key sequence.
When it is not illuminated, a number key will produce the programmed hot key sequence
associated with it.
*
Num Lock overrides Key Latch
on channel 5. If he/she pushes Num Lock, channel 5 is disconnected and no longer active as a
transmit channel.
D
Phone Only: This key is only functional when the Phone key is illuminated (latched) and external
phone calls are being routed to the wireless headset. The Phone Only key toggles between phone
audio only –or- phone audio summed with USB audio getting through to the wireless headset. ALL
transmitting is disabled when Phone Only is illuminated (latched).
E
Phone: Determines how external phone calls will be routed. When this key is illuminated
(latched), the telephone handset is bypassed and the phone call is routed directly to the wireless
headset. The operator would pick up the handset to answer a call, set it aside, and use the
headset to speak into and listen from. When the call is completed, the operator would put the
handset back on the telephone cradle. This is necessary because the head set does not have the
ability to physically pick up or hang up a phone call. When the Phone key is not illuminated, the
phone handset works as a traditional handset (operator speaks into and listens from the handset)
and the Phone Only key is N/A.
For clarification of USB / PHONE audio paths and PTT Functional path, please see
Flowcharts 1, 2 , 3, 4 on pages 7 , 8, 9. 10.
VCC-28 Installation Guide with WAVE
*
IE: The operator has Key Latch illuminated (latched) and is PTT
Page 5 of 33
Essential Trading Systems Corp.
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