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A. DIP Switches
Switch 1 Switch 2 Maximum Call Time
OFF
OFF
ON
OFF
OFF
ON
ON
ON
Switch 3 Disconnect on Dial Tone
OFF
Off
ON
On(default)
Switch 4 VOX Switching Speed
OFF
Fast, 0.2 sec. (default)
ON
Slow, 0.7 seconds
Switch 5 Switch 6 Audio detection
ON
ON
OFF
OFF
Switch 7 Auto Answer Position
OFF
Automatic Answer Disabled
ON
Automatic Answer enabled (default)
Switch 8 Push Button Feature
OFF
Connects Calls Only
ON
Connects/disconnects Calls (default)
B. Volume Adjustments
1. Microphone
Certain noisy locations (background traffic, machinery or wind) may cause one way talk path (only microphone audio is heard).
In this case, the microphone volume may need to be decreased as shown.
2. Speaker
To increase, decrease or turn off the speaker (for monitoring purposes only), adjust the speaker volume control as shown.
C. Auto-Answer Feature (DIP Switch 7)
With DIP switch 7 in the "ON" position (default), the K-1700-3 will automatically answer the line during the first
incoming ring. This feature is useful for monitoring entrances. In the "OFF" position, the K-1770-3 will not
automatically answer incoming calls.
D. Push Button Hang Up (DIP Switch 8)
With DIP switch 8 in the "ON" position (default), the "Call" button alternately connects and disconnects calls. In
the "OFF" position, the "Call" button is only used to connect and the K-1770-3 must rely on call progress (busy,
return to dial tone, silence time-out, or maximum call time) for an automatic disconnect.
E. VOX (Talk/Listen) Switching Speed (DIP Switch 4)
With DIP switch 4 in the "OFF" position (default), the VOX switching speed (delay time between talk and listen
mode) is set to fast (0.2 seconds). In the "ON" position, it is set to slow (0.7 seconds
F. Advanced Call Progress Detection
The K-1770-3 will output 3 beeps and automatically hang-up after detecting any of the following: busy signal
(standard or fast/reorder), CPC (short break in line current when called party hangs up), return to dial tone,
maximum call time or silence time out.
Programming
Disabled (default)
1 Minute
3 Minutes
9 Minutes
Normal Audio detection
Increase audio detect sensitivity for
low level lines. Useful in applications
in which voice or busy signals have
trouble breaking over the speaker.
Microphone Volume
OFF
Rear View of
the K-1770-3
DIP Switches
(shown in default
positions)
4
Speaker Volume
(see section B)
(see section B)
OFF
8
7
6
5
4
3
2
1
ON
OFF
).
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