AudioCodes Mediant 500 E-SBC, Руководство пользователя

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User's Manual 54. Configuration Parameters Reference
Version 6.8 753 Mediant 500 E-SBC
Parameter Description
of this parameter and for configuring this functionality in the IP Profile
table, see ''Configuring IP Profiles'' on page
304 or in the Tel Profile
table, see Configuring Tel Profiles on page 301 .
Note s :

If this functionality is configured for a specific IP Profile, the settings
of this global parameter is ignored for calls associated with the IP
Profile.

This parameter is applicable only to the Gateway application.
Web/EMS: Enable Early 183
CLI: early-183
[EnableEarly183] Global parameter that enables the device to send SIP 183 responses
with SDP to the IP upon receipt of INVITE messages. You can also
configure this functionality per specific calls, using IP Profiles
(IpProfile_EnableEarly183). For a detailed description of this
parameter and for configuring this functionality in the IP Profile table,
see Configuring IP Profiles on page
304 .
Note: If this functionality is configured for a specific IP Profile, the
settings of this global parameter is ignored for calls associated with the
IP Profile.
[IgnoreAlertAfterEarlyMedia] Determines the device's interworking of Alerting messages from PRI to
SIP.

[0] = Disabled (default)

[1] = Enabled
When enabled, if the device sends a 183 response with an SDP (due
to a received ISDN Progress or Proceeding with PI messages) and an
Alerting message is then received from the Tel side (with or without
Progress Indicator), the device does not send an additional 18x
response, and the voice channel remains open. However, if the device
did not send a 183 with an SDP and it receives an Alert without PI, the
device sends a 180 (without SDP). If it receives an Alert with PI it
sends a 183with an SDP.
When disabled, the device sends additional 18x responses as a result
of receiving Alerting and Progress messages, regardless of whether or
not a 18x response was already sent.
Note: This parameter is applicable only if the EnableEarlyMedia
parameter is set to 1 (i.e., enabled).
Web: 183 Message
Behavior
EMS: SIP 183 Behaviour
CLI: 183-msg-behavior
[SIP183Behaviour]
Digital: Defines the ISDN message that is sent when the 183 Session
Progress message is received for IP-to-Tel calls.

[0] Progress = (Default) Digital: The device sends a Progress
message.

[1] Alert = Digital: The device sends an Alerting message (upon
receipt of a 183 response) instead of an ISDN Progress message.
[ReleaseIP2ISDNCallOnPro
gressWithCause] Typically, if an Q.931 Progress message with a Cause is received from
the PSTN for an outgoing IP-to-ISDN call and the EnableEarlyMedia
parameter is set to 1 (i.e., the Early Media feature is enabled), the
device interworks the Progress to 183 + SDP to enable the originating
party to hear the PSTN announcement about the call failure.
Conversely, if EnableEarlyMedia is set to 0, the device disconnects the
call by sending a SIP 4xx response to the originating party. However, if
the ReleaseIP2ISDNCallOnProgressWithCause parameter is set to 1,
then the device sends a SIP 4xx response even if the
EnableEarlyMedia parameter is set to 1.

[0] = (Default) If a Progress with Cause message is received from
the PSTN for an outgoing IP-to-ISDN call, the device does not