Operating instructions

Set Codec Privacy - Engages or disengages codec privacy feature. This command has no effect if the codec
interface is not connected.
Host sends command - 36
Host sends byte: 0 to disengage privacy feature, 1 to engage
Get Codec Privacy - Retrieves privacy status of codec interface.
Host sends command - 37
Host receives data byte: 0 if disengaged, 1 if engaged
DTMF Tone Commands
Send DTMF Tone - Causes the TH3 to dial a single DTMF digit. The telephone connect status is not affected, and
the tone is generated regardless of telephone connect status.
Host sends command - 40
Host sends ASCII byte representing DTMF tone
Valid values are the ASCII numerals 0-9 and the characters A-D, * and #.
Dial Telephone Number - Causes the TH3 to dial a telephone call whose number is supplied as a string. The
telephone interface is automatically connected, if necessary, before dialing begins.
Host sends command - 41
Host sends ASCII string representing telephone number
Valid values are the ASCII numerals 0-9 and the characters A-D, * and #. A comma may be used to insert a
one second delay. The ! character may be used to generate a “flash” signal. Any unrecognized character is
ignored (i.e. dashes and parentheses are acceptable). The string must be terminated by a carriage return
(decimal 13). The string’s length must not exceed 16 characters plus the carriage return.
Setup Commands
Set Panel Disable - Disables or enables the front panel switches on the TH3.
Host sends command - 50
Host sends byte: 0 to enable panel, 1 to disable
Get Panel Disable - Retrieves the enabled or disabled status of the TH3 front panel switches.
Host sends command - 51
Host receives data byte: 0 for enabled, 1 for disabled
Set Dial Speed - Determines the TH3’s DTMF tone duration and automatic dialing speed.
Host sends command - 52
Host sends byte in range 1-10: 1 is the fastest, 10 is the slowest, 4 is the default speed.
Get Dial Speed - Retrieves the current dialing speed.
Host sends command - 53
Host receives data byte in range 1-10: 1 is the fastest, 10 is the slowest, 4 is the default speed.
Set Auto Disconnect - Turns the TH3’s automatic disconnect feature on or off.
Host sends command - 54
Host sends byte: 0 to disable the feature, 1 to enable it
Get Auto Disconnect - Retrieves the status of the TH3’s automatic disconnect feature.
Host sends command - 55
Host receives data byte: 0 if the feature is disabled, 1 if it is enabled
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