AudioCodes MediaPack MP-11X User Manual page 333

SIP User's Manual
One -stage dialing incorporates the following FXO functionality:
Waiting for Dial Tone
The Waiting for Dial Tone feature enables the gateway to dial the digits to the Tel side
only after detecting a dial tone from the PBX line. The ini file parameter
IsWaitForDialTone is used to configure this operation.
Time to Wait Before Dialing
The Time to Wait Before Waiting feature defines the time (in msec) between seizing
the FXO line and starting to dial the digits. The ini file parameter WaitForDialTime is
used to configure this operation.
Note:
Answer Supervision
The Answer Supervision feature enables the FXO gateway to determine when a call is
connected, by using one of the following methods:
•
Polarity Reversal: the gateway sends a 200 OK in response to an INVITE only
when it detects a polarity reversal.
•
Voice Detection: the gateway sends a 200 OK in response to an INVITE only
when it detects the start of speech (or ringback tone) from the Tel side. (Note that
the IPM detectors must be enabled).
Version 5.2
The ini file parameter IsWaitForDialTone must be disabled for this mode.
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7. Telephony Capabilities
August 2007