Operating instructions

Get Audible Ring Chime - Retrieves status of audible ring chime feature.
Host sends command - 69
Host receives data byte: 0 if feature is disabled, 1 if enabled
Set Phone Echo Suppression - Selects amount of echo suppression applied to telephone interface.
Host sends command - 70
Host sends byte in range 36-72: 36 represents 12 dB of suppression, 72 represents 24 dB of suppression.
Any amount in between may be selected for continuous adjustment between 12 and 24 dB in 1/3 dB incre-
ments.
Get Phone Echo Suppression - Retrieves amount of echo suppression applied to telephone interface.
Host sends command - 71
Host receives data byte: 36 represents 12 dB of suppression, 72 represents 24 dB of suppression. Any
amount in between may be selected for continuous adjustment between 12 and 24 dB in 1/3 dB increments.
Set Phone Rx Atten - Performs fine adjustment of telephone receive volume.
Host sends command - 72
Host sends byte in range 0-54, 126 or 127: 0 represents +6 dB, 18 represents 0 dB, 54 represents -12 dB.
All values in between 0 and 54 are valid, representing 1/3 dB increments. A value of 126 causes the receive
volume to decrease 1 dB. A value of 127 causes the receive volume to increase 1 dB.
Get Phone Rx Atten - Retrieves current fine adjustment of telephone receive volume.
Host sends command - 73
Host receives byte in range 0-54: 0 represents +6 dB, 18 represents 0 dB, 54 represents -12 dB. All values
in between are valid, representing 1/3 dB increments.
Set Phone Privacy Mode - Selects privacy mode for telephone interface.
Host sends command - 74
Host sends byte: 1: mute tx only, 2: mute rx only, 3: mute both
Get Phone Privacy Mode - Retrieves privacy mode for telephone interface.
Host sends command - 75
Host receives data byte: 1: mute tx only, 2: mute rx only, 3: mute both
Set Codec Echo Suppression - Selects amount of echo suppression applied to codec interface.
Host sends command - 80
Host sends byte in range 36-72: 36 represents 12 dB of suppression, 72 represents 24 dB of suppression.
Any amount in between may be selected for continuous adjustment between 12 and 24 dB in 1/3 dB incre-
ments.
Get Codec Echo Suppression - Retrieves amount of echo suppression applied to codec interface.
Host sends command - 81
Host receives data byte: 36 represents 12 dB of suppression, 72 represents 24 dB of suppression. Any
amount in between may be selected for continuous adjustment between 12 and 24 dB in 1/3 dB increments.
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