3Com VCX v7111 User Manual page 147

Parameter
Waiting For Dial Tone
[IsWaitForDialTone]
Time to Wait before Dialing
[msec]
[WaitForDialTime]
Replaces the obsolete
parameter
FXOWaitForDialTime.
Ring Detection Timeout
[sec]
[FXOBetweenRingTime]
Reorder Tone Duration
[sec]
[TimeForReorderTone]
®
3Com VCX V7111 VoIP Gateway User Guide
Description
No [0] = Do not wait for dial tone.
Yes [1] = Wait for dial tone (default).
Used for IP V7111/FXO gateways, when One Stage Dialing is enabled.
If wait for dial tone is enabled, the FXO gateway dials the phone number (to the
PSTN/PBX line) only after it detects a dial tone.
The correct dial tone parameters should be configured in the Call
Progress Tones file.
It can take the gateway 1 to 3 seconds to detect a dial tone (according
to the dial tone configuration in the Call Progress Tones file).
If Waiting For Dial Tone is disabled, the FXO gateway immediately dials the
phone number after seizing the PSTN/PBX line, without listening to dial tone.
Determines the delay before the gateway starts dialing on the FXO line in the
following scenarios (applicable only to FXO gateways):
1. The delay between the time the line is seized and dialing is begun, during the
establishment of an IP Tel call.
Applicable only to FXO gateways for single stage dialing, when waiting
for dial tone (IsWaitForDialTone) is disabled.
2. The delay between the time when Wink is detected and dialing is begun,
during the establishment of an IP Tel call (for DID lines, EnableDIDWink = 1).
3. For call transfer. The delay after hook-flash is generated and dialing is begun.
The valid range (in milliseconds) is 0 to 20000 (20 seconds). The default value
is 1000 (1 second).
Applicable only to FXO gateways for Tel IP calls.
The Ring Detection timeout is used differently for normal and for
automatic dialing.
If automatic dialing is not used, and if Caller ID is enabled, then the FXO
gateway seizes the line after detection of the second ring signal (allowing
detection of caller ID, sent between the first and the second rings). If the second
ring signal does not arrive for Ring Detection Timeout the gateway does not
initiate a call to IP.
When automatic dialing is used, the FXO gateway initiates a call to IP when
ringing signal is detected. The FXO line is seized only if the remote IP party
answers the call. If the remote party does not answer the call and the ringing
signal stops for Ring Detection Timeout, the FXO gateway Releases the IP call.
Usually set to a value between 5 and 8.
The default is 8 seconds.
Busy or Reorder tone duration (seconds) the FXO gateway plays before
releasing the line.
The valid range is 0 to 100. The default is 0 seconds.
Usually, after playing a Reorder / Busy tone for the specified duration, the FXS
gateway, starts playing an Offhook Warning tone.
Selection of Busy or Reorder tone is performed according to the
release cause received from IP.
Refer also to the parameter CutThrough (described in Table 23).
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