Specifications
Macrotel DIGITAL
Pag. 11
4 SETTINGS
4.1 DIP SWITCHES SETTING
DIP SWITCHES are .off. in the down position and .on. in the up position.
DIP SWITCH 1
Enables/disables the Burst Adapt feature. In the .off position (down) the hybrid is
in Auto Adapt Mode. In the .on. position (up) the hybrid will send a noise burst to
the telephone line and aggressively adapt before returning to Auto Adapt Mode.
Each press of the ON button will generate a new noise burst.
In either mode, the hybrid continually monitors and adapts to the changing
telephone line conditions in order to digitally cancel the telephone line echo and
provide the best send-to-caller separation possible
DIP SWITCH 2
Enables/disables the Caller Boost feature. In the .off. position (down) the caller
boost feature is disabled. In the .on. position (up) the hybrid adds 6dB of level
boost to the caller.s audio at the Receive connector.
DIP SWITCH 3
Allows the hybrid to work with two types of switches for external (remote) control
momentary and latching. In the .off. position (down) the ON/OFF control inputs
respond to momentary closures to ground.
This turns the hybrid on when it receives a momentary closure on the ON control
input and off when it receives a closure on the OFF control input.
In the .on. position (up) the OFF control input is disabled and the ON control input
responds to a latching closure to ground. This will cause the hybrid to turn on
when the latching switch is closed to ground and the hybrid will remain on until the
closure to ground is opened.
This DIP SWITCH setting also affects the operation of the front panel ON/OFF
buttons. See .previous Chapter for REMOTE CONTROL connector pinouts.
DIP SWITCH 4
Sets the gain of the SEND connector. In the .off. position (down) the input is a
nominal line level (0dBu) input. In the .on. position (up) the input is a mic level
providing +55dBu of input gain
DIP SWITCHES 5 & 6
Enables/disables the Caller Control (ducking) feature.
In the .on. position (up) the hybrid will provide caller control, which is the
suppression of caller audio when send audio is present.
In the .off. position (down) caller control is disabled. DIP SWITCH 5, when active,
adds 6dB of caller control and DIP SWITCH 6, when active, adds 12dB of caller
control. If both are active, then the sum of the two DIP SWITCHES is used, and
18dB of caller control is provided
DIP SWITCH 7
Enables/disables the Auto Answer feature. In the .off. position (down) the hybrid
will not automatically answer the telephone line. In the .on. position (up) the hybrid
will automatically answer the telephone line after the first ring
DIP SWITCH
8
Enables/disables the Auto Disconnect feature. In the .off. position (down) the
hybrid will not automatically disconnect the telephone line. In the .on. position (up)
the hybrid will automatically disconnect the telephone line after the caller hangs
up. Note: The telephone line must provide loop drop, loop reversal or call
progress signals in order for the Auto Disconnect feature to function. Most
telephone systems will provide loop drop shortly after the calling party hangs up.
Some PBX systems, but not all, will provide either loop drop or call progress tones
such as reorder tones or busy signals. The hybrid will detect most of these signals
and then auto disconnect the telephone line
DIP SWITCH 9
Enables/disables the Automatic Gain Control (AGC) feature. In the .off. position
(down) the AGC feature is disabled. In the .on. position (up) the AGC feature is
enabled. When enabled, the AGC feature normalizes the gain of the caller audio,