AudioCodes Mediant 500 E-SBC User Manual page 746

Parameter
CLI: expl-un-reg
[UnregistrationMode]
Web/EMS: Add Empty Authorization
Header
CLI: add-empty-author-hdr
[EmptyAuthorizationHeader]
User's Manual
Note: This parameter is applicable only to the Gateway
application.
Enables the device to perform explicit unregisters.

[0] Disable (default)

[1] Enable = The device sends an asterisk ("*") value in the
SIP Contact header, instructing the Registrar server to
remove all previous registration bindings. The device
removes SIP User Agent (UA) registration bindings in a
Registrar, according to RFC 3261. Registrations are soft
state and expire unless refreshed, but they can also be
explicitly removed. A client can attempt to influence the
expiration interval selected by the Registrar. A UA requests
the immediate removal of a binding by specifying an
expiration interval of "0" for that contact address in a
REGISTER request. UA's should support this mechanism
so that bindings can be removed before their expiration
interval has passed. Use of the "*" Contact header field
value allows a registering UA to remove all bindings
associated with an address-of-record (AOR) without
knowing their precise values.
Note: The REGISTER-specific Contact header field value of "*"
applies to all registrations, but it can only be used if the Expires
header field is present with a value of "0".
Enables the inclusion of the SIP Authorization header in initial
registration (REGISTER) requests sent by the device.

[0] Disable (default)

[1] Enable
The Authorization header carries the credentials of a user
agent (UA) in a request to a server. The sent REGISTER
message populates the Authorization header with the following
parameters:

username - set to the value of the private user identity

realm - set to the domain name of the home network

uri - set to the SIP URI of the domain name of the home
network

nonce - set to an empty value

response - set to an empty value
For example:
Authorization: Digest
username=alice_private@home1.net,
realm="home1.net", nonce="",
response="e56131d19580cd833064787ecc"
Note: This registration header is according to the IMS 3GPP
TS24.229 and PKT-SP-24.220 specifications.
746
Mediant 500 E-SBC
Description
Document #: LTRT-10437