AudioCodes Mediant 800B - Page 1273

Version 7.2 1273 Mediant 800B Gateway & E-SBC
User's Manual 72. Configuration Parameters Reference
Parameter Description
time, e.g., four).
Rings before Detecting Caller ID
configure voip > gateway analog fxo-
setting > rings-b4-det-callerid
[RingsBeforeCallerID]
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.
Guard Time Between Calls
configure voip > gateway analog fxo-
setting > guard-time-btwn-calls
[GuardTimeBetweenCalls]
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.
FXO Double Answer
configure voip > gateway analog fxo-
setting > fxo-dbl-ans
[EnableFXODoubleAnswer]
Global parameter enabling the FXO Double Answer feature,
which rejects (disconnects) incoming Tel-to-
IP collect calls and
signals (informs) this call denial to the PSTN..
You can also configure the functionality per specific calls,
using Tel Profiles (TelProfile_EnableFXODoubleAnswer). For
a detailed description of the parameter and for configuring the
functionality in the Tel Profiles table, see 'Configuring Tel
Profiles' on page 473.
Note: If the functionality is configured for a specific Tel Profile,
the settings of the global parameter is ignored for calls
associated with the Tel Profile.
FXO Ring Timeout
configure voip > gateway analog fxo-
setting > fxo-ring-timeout
[FXORingTimeout]
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
timeout expires.
The valid value range is 0 to 50 (msec), in steps of 100-msec.
For example, a value of 50 represents 5 sec. The default value
is 0 (i.e., standard ring operation - the FXO interface sends an
INVITE upon receipt of the RING_END event).
Note: The parameter can be configured for a Tel Profile.