Version 5.8 327 September 2009
SIP User's Manual 6. Configuration Parameters Reference
Parameter Description
The device may take 1 to 3 seconds to detect a dial tone (according
to the dial tone configuration in the Call Progress Tones file). If the
dial tone is not detected within 6 seconds, the device releases the
call and sends a SIP 500 "Server Internal Error” response.
This parameter is applicable only to FXO interfaces.
Time to Wait before Dialing
[msec]
[WaitForDialTime]
Determines the delay before the device starts dialing on the FXO line
in the following scenarios:
The delay between the time the line is seized and dialing begins
during the establishment of an IP-to-Tel call.
Note: Applicable only for one-stage dialing, when the parameter
IsWaitForDialTone is disabled.
The delay between detection of a Wink and the start of dialing
during the establishment of an IP-to-Tel call (for DID lines,
EnableDIDWink is set to 1).
For call transfer - the delay after hook-flash is generated and dialing
begins.
The valid range (in milliseconds) is 0 to 20,000 (i.e., 20 seconds). The
default value is 1,000 (i.e., 1 second).
Note: This parameter is applicable only to FXO interfaces.
Ring Detection Timeout
[sec]
[FXOBetweenRingTime]
Defines the timeout (in seconds) for detecting the second ring after the
first detected ring.
If automatic dialing is not used and Caller ID is enabled, the device
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 is not received within this timeout, the device
doesn't initiate a call to IP.
If automatic dialing is used, the device initiates a call to IP when the
ringing signal is detected. The FXO line is seized only if the remote IP
party answers the call. If the remote party doesn't answer the call and
the second ring signal is not received within this timeout, the device
releases the IP call.
This parameter is typically set to between 5 and 8. The default is 8.
Notes:
This parameter is applicable only to FXO interfaces (for Tel-to-IP
calls).
This timeout is calculated from the end of the ring until the start of
the next ring. For example, if the ring cycle is two seconds on and
four seconds off, the timeout value should be configured to five
seconds (i.e., greater than the off time, e.g., four).
Rings before Detecting
Caller ID
[RingsBeforeCallerID]
Determines the number of rings before the device starts detecting
Caller ID.
[0] 0 = Before first ring.
[1] 1 = After first ring (default).
[2] 2 = After second ring.
Note: This parameter is applicable only to FXO interfaces.
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