IMG 1010 - SIP Privacy Overview
The IMG supports SIP Privacy as explained in RFC 3323 and also supports RFC 3325 which adds the P-Asserted-Identity header and the P-Preferred Identity Header in a Trusted Network. SIP Privacy is an extension to SIP that allows parties in a SIP session to withhold their identity and remain anonymous. SIP Privacy is similar to withholding a caller ID in the PSTN. There are a few reasons why SIP Privacy would want to be implemented in a network.
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