Function 11: Amplifier Sensitivity Setting
Sets typical thresholds at which the amplifier turns on. Use this function if
problems are experienced with low level signals not being amplified. Function
10, Amplifier Gain Level Setting, must be enabled. (Attempts to use this
function with M-106-05E units result in error tone.)
Typical threshold levels can be lowered for either direction, or for both
directions. Table 3 lists the threshold levels for each of the six option settings.
For example, the amplifier normally turns on when it detects transmission
levels in either direction of -44 dBm or lower (S = 0). Setting S = 1 increases the
amplifier sensitivity to signals from the caller side (-48 dBm) and decreases
sensitivity to signals from the central office side (-42 dBm).
To set the thresholds at which the amplifier turns on, enter:
*11*S#
where:
S = 0, no sensitivity bits set (Default)
S = 1, increase sensitivity to signals from M-106E incoming (IN)
line side and decrease sensitivity to signals from outgoing (OUT)
line side
S = 2, increase sensitivity to signals from M-106E outgoing (OUT)
line side and decrease sensitivity to signals from incoming (IN)
line side
S = 3, enhanced sensitivity to both sides (amplifier turns on at
lower dBm levels from both directions)
S = 4, IN + enhanced sensitivity
S = 5, OUT + enhanced sensitivity
Function 12: Amplifier Gain Direction Control
Amplifies the signal only on the caller side while the caller is dialing, then
turns off and allows the amplifier to operate normally. The purpose of this
function is to ensure that dialed digits can be detected, i.e., that the amplifier
does not amplify the level of dial tone and attenuate the level of the digits
being dialed. Use this when callers have difficulty breaking dial tone. Function
10, Amplifier Gain Level Setting, must be enabled.
To turn direction control on and off as follows
*12*D#
where:
D = 0, disables direction control
D = 1, (Default) turns direction control ON whenever caller does a
switchhook flash and OFF after the first digit buttons up (If
direction control is needed, this option works for most
applications.)
D = 2, turns direction control ON whenever caller does a
switchhook flash and OFF after buttons up on each digit
D = 3, turns direction control ON whenever caller does a
switchhook flash and OFF after buttons up on #
M-106E Reference Manual
Page 36
