Instruction Manual

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needs not change it in common case)
DTMF CID: The settings allow administrator to change the DTMF start and
end digit, if it needs special digits for PBX connection.
Start digit: Default digit is “D”.
End digit: Default digit is “C”.
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Other Settings
FXO Loop Interruption: Setup the FXO loop interruption time. The range is
from 400ms to 1000ms.
PSTN DTMF tone: Enable/Disable DTMF tone.
Call Waiting: Enable/Disable the call waiting function.
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Figure 31 System Parameter
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