Version 7.0 895 Mediant 3000
User's Manual 58. Configuration Parameters Reference
Parameter Description
User-Agent: Sip-Gateway-/v.6.80A.227.005
Reason: Q.850 ;cause=16 ;text="local"
PRACK Mode
[PrackMode]
Determines the PRACK (Provisional Acknowledgment) mechanism
mode for SIP 1xx reliable responses.
ï‚§ [0] Disable
ï‚§ [1] Supported (default)
ï‚§ [2] Required
Notes:
ï‚§ The Supported and Required headers contain the '100rel' tag.
ï‚§ The device sends PRACK messages if 180/183 responses are
received with '100rel' in the Supported or Required headers.
Enable Early Media
[EnableEarlyMedia]
Global parameter that enables the Early Media feature for sending
(e.g., ringing) before the call is established. You can also configure this
functionality per specific calls, using IP Profiles
(IpProfile_EnableEarlyMedia) or Tel Profiles. For a detailed description
of the parameter and for configuring this functionality in the IP Profile
table, see ''Configuring IP Profiles'' on page
391 or in the Tel Profile
table, see Configuring Tel Profiles on page 388.
Notes:
ï‚§
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.
ï‚§ The parameter is applicable only to the Gateway application.
Enable 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 the parameter
and for configuring this functionality in the IP Profile table, see
Configuring IP Profiles on page 391.
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.
[IgnoreAlertAfterEarlyMedi
a]
Determines the device's interworking of Alerting messages from PRI to
SIP.
ï‚§ [0] = Disabled (default)
ï‚§ [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: The parameter is applicable only if the EnableEarlyMedia