AudioCodes Mediant 3000 User Manual page 407

User's Manual
Parameter
NAT UDP Registration Time
[IpProfile_SBCUserBehindUdp
NATRegistrationTime]
NAT TCP Registration Time
[IpProfile_SBCUserBehindTcpN
ATRegistrationTime]
Remote REFER Mode
[IpProfile_SBCRemoteReferBeh
avior]
Version 7.0
request remains unchanged. If no Expires header is received in the
REGISTER message and the parameter is set to 0, the Expires
header's value is set to 180 seconds, by default.
Note: The corresponding global parameter is
SBCUserRegistrationTime.
Defines the registration time (in seconds) that the device includes
in register responses, in response to SIP REGISTER requests from
users belonging to the SIP entity associated with the IP Profile.
The parameter applies only to users that are located behind NAT
and whose communication type is UDP. The registration time is
inserted in the Expires header in the outgoing response sent to the
user.
The Expires header determines the lifespan of the registration. For
example, a value of 3600 means that the registration will timeout in
one hour, unless the user sends a refresh REGISTER before the
timeout. Upon timeout, the device removes the user's details from
the registration database, and the user will not be able to make or
receive calls through the device.
The valid value is 0 to 2,000,000. If configured to 0, the Expires
header's value received in the user's REGISTER request remains
unchanged. By default, no value is defined (-1).
Note: If the parameter is not configured, the registration time is
according to the global parameter SBCUserRegistrationTime or IP
Profile parameter IpProfile_SBCUserRegistrationTime.
Defines the registration time (in seconds) that the device includes
in register responses, in response to SIP REGISTER requests from
users belonging to the SIP entity associated with the IP Profile.
The parameter applies only to users that are located behind NAT
and whose communication type is TCP. The registration time is
inserted in the Expires header in the outgoing response sent to the
user.
The Expires header determines the lifespan of the registration. For
example, a value of 3600 means that the registration will timeout in
one hour, unless the user sends a refresh REGISTER before the
timeout. Upon timeout, the device removes the user's details from
the registration database, and the user will not be able to make or
receive calls through the device.
The valid value is 0 to 2,000,000. If configured to 0, the Expires
header's value received in the user's REGISTER request remains
unchanged. By default, no value is defined (-1).
Note: If the parameter is not configured, the registration time is
according to the global parameter SBCUserRegistrationTime or IP
Profile parameter IpProfile_SBCUserRegistrationTime.
Defines the device's handling of REFER requests for the SIP entity
associated with the IP Profile.

[0] Regular = (Default) Refer-To header is unchanged and the
device forwards the REFER as is.

[1] Database URL = Changes the Refer-To header so that the
re-routed INVITE is sent through the SBC:
a. Before forwarding the REFER request, the device changes
the host part to the device's IP address and adds a special
407
20. Coders and Profiles
Description
Mediant 3000