JK Audio innkeeper 1x/rx - Manual (Page 8)

8
Operation (continued)
Presence
The Presence feature is a custom digital filter that boosts low
frequencies in the 120Hz to 500Hz region to compensate for losses in
the telephone network. This is a single ended algorithm that treats only
the Caller signal before it leaves the digital hybrid. You may notice that
it has more of an effect on low pitched, or deeper voices.
Auto-Answer
The Auto-Answer feature will answer incoming calls on the first ring.
When Auto-Answer is enabled, you can still take calls manually using
the Call button. When finished, you can either drop the call manually or
allow the call to Auto-Disconnect. Innkeeper 1x/1rx will look for a
CPC (calling-party-control) disconnect signal or ROH (receiver-off-
hook) message from the phone company to determine when a call has
disconnected. This can take up to a minute.
1 kHz Tone Generator
The 1 kHz tone generator is a three-state button used for setting levels
on your other equipment. It is not used to null the phone line. When
pressed once a full scale 0dB maximum output level signal is sent down
the phone line. This will allow you to calibrate levels at the other end of
the call. When pressed again, this same signal is sent to the Caller out-
put only. This will allow you to calibrate the signal level at your con-
sole. The tone generator is disabled when pressed a third time.
Rear Screw Terminals
1 Speaker (+) Minimum 8 ohms, 1 watt max
2 Speaker (-) Use together with terminal 1
3 Ring LED Supplies +4.3 VDC, 40 mA pulse signal during
incoming ring cycles.
4 Chassis Ground
5 OH LED Supplies +4.3 VDC, 40 mA steady signal during an
active call.
6 Call (NO) Pull this pin to ground momentarily to simulate
pressing the Call button.
7 Drop (NO) Pull this pin to ground momentarily to simulate
pressing the Drop button.
8 Reserved