User's Manual 830 Document #: LTRT-12809
Mediant 800 MSBR
Parameter Description
Notes:
This parameter is applicable only if the parameter RegretTime is
configured.
This parameter is applicable only to FXS interfaces.
Web: PSTN Alert Timeout
EMS: Trunk PSTN Alert
Timeout
CLI: pstn-alert-timeout
[PSTNAlertTimeout]
Digital: Defines the Alert Timeout (in seconds) for calls sent to the
PSTN. This timer is used between the time a Setup message is sent to
the Tel side (IP-to-Tel call establishment) and a Connect message is
received. If an Alerting message is received, the timer is restarted. If the
timer expires before the call is answered, the device disconnects the
call and sends a SIP 408 request timeout response to the SIP party that
initiated the call.
Analog: Defines the Alert Timeout (in seconds) for calls to the Tel side.
This timer is used between the time a ring is generated (FXS) or a line
is seized (FXO), until the call is connected. For example: If the FXS
device receives an INVITE, it generates a ring to the phone and sends
a SIP 180 Ringing response to the IP. If the phone is not answered
within the time interval set by this parameter, the device cancels the call
by sending a SIP 408 response.
The valid value range is 1 to 600 (in seconds). The default is 180.
Note:
If per trunk configuration (using TrunkPSTNAlertTimeout) is set to
other than default, the PSTNAlertTimeout parameter value is
overridden.
Web/EMS: RTP Only
Mode
CLI: rtp-only-mode
[RTPOnlyMode]
Enables the device to send and receive RTP packets to and from
remote endpoints without the need to establish a SIP session. The
remote IP address is determined according to the Outbound IP Routing
table (Prefix parameter). The port is the same port as the local RTP port
(configured by the BaseUDPPort parameter and the channel on which
the call is received).
[0] Disable (default)
[1] Transmit & Receive = Send and receive RTP packets.
[2] Transmit Only= Send RTP packets only.
[3] Receive Only= Receive RTP packets only.
Notes:
To activate the RTP Only feature without using ISDN / CAS
signaling, you must do the following:
Configure E1/T1 Transparent protocol type (set the ProtocoType
parameter to 5 or 6).
Enable the TDM-over-IP feature (set the EnableTDMoverIP
parameter to 1).
To configure the RTP Only mode per trunk, use the
RTPOnlyModeForTrunk_x parameter.
If per trunk configuration (using the RTPOnlyModeForTrunk_x
parameter) is set to a value other than the default, the
RTPOnlyMode parameter value is ignored.
[RTPOnlyModeForTrunk
_x]
Enables the RTP Only feature per trunk, where ID denotes the trunk
number (0 is the first trunk). For more information, see the
RTPOnlyMode parameter.
Note: For using the global parameter (i.e., setting the RTP Only feature
for all trunks), set this parameter to -1 (default).
Web/EMS: SIT Q850
Defines the Q.850 cause value specified in the SIP Reason header that
is included in a 4xx response when a Special Information Tone (SIT) is