AudioCodes Mediant 3000 User Manual page 632

Parameter
User's Manual
the incoming SIP dialog. If a restricted number exists, the restricted
presentation is normalized as follows:

From URL header: anonymous@anonymous.invalid.

If a P-Asserted-Identity header exists (either in the incoming SIP
dialog or added by the device), a Privacy header is added with the
value "id".

[2] Restrict = The user identity is restricted (the restricted presentation
is as mentioned above).

[3] Remove Restriction = The device attempts to reveal the user
identity by setting user values in the From header and removing the
privacy "id" value if the Privacy header exists.
If the From header user is anonymous, the value is taken from the P-
Preferred-Identity, P-Asserted-Identity, or Remote-Party-ID header (if
exists).
The device identifies an incoming user as restricted if one of the following
exists:

From header user is anonymous.

P-Asserted-Identity and Privacy headers contain the value "id".
Note: All restriction logic is performed after the user number has been
manipulated.
632
Description
Document #: LTRT-89730
Mediant 3000