SIP User's Manual 834 Document #: LTRT-12804
Mediant 800 MSBG
Parameter Description
Notes:
The correct dial tone parameters must be configured in the CPT file.
The device may take 1 to 3 seconds to detect a dial tone (according
to the dial tone configuration in the CPT 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.
Web: Time to Wait before
Dialing [msec]
EMS: Time Before Dial
[WaitForDialTime]
For digital interfaces: Determines the delay after hook-flash is
generated and until dialing begins. Applies to call transfer (i.e., the
parameter TrunkTransferMode is set to 3) on CAS protocols.
For Analog interfaces: 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).
Web: Ring Detection
Timeout [sec]
EMS: Timeout Between
Rings
[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 deviceinitiates 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).
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