AudioCodes Mediant 800B User Manual page 902

Parameter
EMS: Timeout Between Rings
CLI: ring-detection-tout
[FXOBetweenRingTime]
Web: Rings before Detecting Caller
ID
EMS: Rings Before Caller ID
CLI: rings-b4-det-callerid
[RingsBeforeCallerID]
Web/EMS: Guard Time Between
Calls
CLI: guard-time-btwn-calls
[GuardTimeBetweenCalls]
Web: FXO Double Answer
CLI: fxo-dbl-ans
[EnableFXODoubleAnswer]
Web: FXO Ring Timeout
CLI: fxo-ring-timeout
[FXORingTimeout]
User's Manual
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 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).
Determines the number of rings before the device starts
detecting Caller ID.

[0] 0 = Before first ring.

[1] 1 = (Default) After first ring.

[2] 2 = After second ring.
Defines the time interval (in seconds) after a call has ended
and a new call can be accepted for IP-to-Tel (FXO) calls.
The valid range is 0 to 10. The default is 1.
Note: Occasionally, after a call ends and on-hook is applied, a
delay is required before placing a new call (and performing off-
hook). This is necessary to prevent incorrect hook-flash
detection or other glare phenomena.
Enables the FXO Double Answer feature, which rejects
(disconnects) incoming Tel (FXO)-to-IP collect calls and
signals (informs) this call denial to the PSTN.

[0] Disable (default)

[1] Enable
Note: This parameter can be configured for a Tel Profile.
Defines the delay (in msec) before the device generates a SIP
INVITE (call) to the IP side upon detection of a RING_START
event from the Tel (FXO) side. This occurs instead of waiting
for a RING_END event.
This feature is useful for telephony services that employ
constant ringing (i.e., no RING_END is sent). For example,
Ringdown circuit is a service that sends a constant ringing
current over the line, instead of cadence-based 2 second on, 4
second off. For example, when a telephone goes off-hook, a
phone at the other end instantly rings.
If a RING_END event is received before the timeout expires,
the device does not initiate a call and ignores the detected
ring. The device ignores RING_END events detected after the
902
Mediant 800B Gateway and E-SBC
Description
Document #: LTRT-10278