Version 7.2 439 Mediant 1000B Gateway & E-SBC
User's Manual 19. Coders and Profiles
Tel Profile Parameter Global Parameter
FXO Double Answer
fxo-double-answer
[TelProfile_EnableFXODoubleAnswer]
Enables the FXO Double Answer feature, which rejects
(disconnects) incoming (FXO) Tel-to-IP collect calls and signals
(informs) this call denial to the PSTN.
 [0] Disable (default)
 [1] Enable
Note:
 The parameter is applicable only to FXO interfaces.
 The corresponding global parameter is
EnableFXODoubleAnswer.
FXO Ring Timeout
fxo-ring-timeout
[TelProfile_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.
The feature is useful for telephony services that employ constant
ringing (i.e., when 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 seconds on, 4
seconds 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 is applicable only to FXO interfaces.
 If the parameter is configured for a specific FXO port, Caller
ID detection does not occur and the RingBeforeCallerID and
FXONumberOfRings parameters do not affect the outgoing
INVITE for that FXO port.
 The corresponding global parameter is FXORingTimeout.
Flash Hook Period
flash-hook-period
[TelProfile_FlashHookPeriod]
Defines the hook-flash period (in msec) for Tel and IP sides. For
the IP side, it defines the hook-flash period reported to the IP.
For the analog side, it defines the following:
 FXS interfaces:
Maximum hook-flash detection period. A longer signal is
considered an off-hook or on-hook event.
Hook-flash generation period upon detection of a SIP
INFO message containing a hook-flash signal.
 FXO interfaces: Hook-flash generation period.
The valid range is 25 to 3,000. The default is 700.
Note:
 The parameter is applicable to FXS and FXO interfaces
 For FXO interfaces, a constant of 100 msec must be added to
the required hook-flash period. For example, to generate a
450 msec hook-flash, configure the parameter to 550.
 The corresponding global parameter is FlashHookPeriod.
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