User`s manual

SIP User's Manual 170 Document #: LTRT-83303
Mediant 1000 & Mediant 600
Parameter Description
Enable Polarity Reversal
[EnableReversalPolarity]
Enables the polarity reversal feature.
 [0] Disable = Disable the polarity reversal service (default).
 [1] Enable = Enable the polarity reversal service.
If the polarity reversal service is enabled, the FXS interface changes the
line polarity on call answer and then changes it back on call release.
The FXO interface sends a 200 OK response when polarity reversal
signal is detected (applicable only to one-stage dialing) and releases a
call when a second polarity reversal signal is detected.
Note: This parameter is applicable only to Mediant 1000.
Enable Current Disconnect
[EnableCurrentDisconnec
t]
Enables call release upon detection of a current disconnect signal.
 [0] Disable = Disable the current disconnect service (default).
 [1] Enable = Enable the current disconnect service.
If the current disconnect service is enabled, the FXO releases a call
when a current disconnect signal is detected on its port, while the FXS
interface generates a 'Current Disconnect Pulse' after a call is released
from IP.
The current disconnect duration is determined by the parameter
CurrentDisconnectDuration. The current disconnect threshold (FXO only)
is determined by the parameter CurrentDisconnectDefaultThreshold. The
frequency at which the analog line voltage is sampled is determined by
the parameter TimeToSampleAnalogLineVoltage.
Note: This parameter is applicable only to Mediant 1000.
Disconnect on Broken
Connection
[DisconnectOnBrokenCo
nnection]
Determines whether the device releases the call if RTP packets are not
received within a user-defined timeout.
 [0] No
 [1] Yes (default)
Notes:
 The timeout is set by the parameter BrokenConnectionEventTimeout.
 This feature is applicable only if the RTP session is used without
Silence Compression. If Silence Compression is enabled, the device
doesn't detect a broken RTP connection.
 During a call, if the source IP address (from where the RTP packets
are sent) is changed without notifying the device, the device filters
these RTP packets. To overcome this, set
DisconnectOnBrokenConnection to 0; the device doesn't detect RTP
packets arriving from the original source IP address and switches
(after 300 msec) to the RTP packets arriving from the new source IP
address.
Broken Connection
Timeout
[BrokenConnectionEvent
Timeout]
The time period (in 100 msec units) that an RTP packet is not received
after which a call is disconnected.
The valid range is 1 to 1,000. The default value is 100 (i.e., 10 seconds).
Notes:
 Applicable only if DisconnectOnBrokenConnection = 1.
 Currently, this feature works only if Silence Suppression is disabled.