ClearOne AP10 - Manual (Page 30)

Appendices ~ Appendix C: Serial Commands 26
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NULL
This command sends a short noise burst down the telephone line and forces the
AP10 to adapt to the telephone line. This command is write-only.
Command form: DEVICE NULL
Return Values: If the renull succeeded, the following is returned: DEVICE NULL
RING
When the AP10 receives a ring at the dialed-up location, the AP10 will respond:
Device RING
TE
Controls and reports the connection status of the unit.
Command form: DEVICE TE
Explanation: is the action (i.e., connect, disconnect, current state)
X=0 Parameter to set the unit to disconnect from the line
X=1 Parameter to set the unit to connect to the line
X=2 Parameter to toggle the state from one state to the other
(regardless of current state)
X=Null Parameter to report back the current state
Return values:
If the current connect state is on, the following returns: DEVICE TE 1
If the current connect state if off, the following returns: DEVICE TE 0
Examples: To connect the unit to the telephone line: #20 TE 1
To report the connection state of the unit: #20 TE
TERL
This command reports back the telephone echo return loss (ERL) for the AP10 in
dB. This is a read-only parameter.
Command form: DEVICE TERL
Return values:
If the current TERL level is 10 dB, the following is returned: DEVICE TERL 10