userinfo

The Oracle® Enterprise Session Border Controller places a cookie in the userinfo portion of a SIP URI when a SIP header contains a SIP URI, and includes that header type in the list of headers to be hidden (encrypted) in the associated SIP NAT function. The cookie for the userinfo portion is the following:

[user nat tag][encrypted 13-byte host IP][encrypted 13 byte maddr IP (if present)]

where:

[user nat tag] refers to the SIP NAT function’s original user NAT tag field.
[encrypted 13-byte host IP] refers to the host IP encryption.
[encrypted 13 byte maddr IP (if present)] refers to the maddr IP encryption, if it exists.

With a user NAT tag of -acme, the following SIP-URI:

sip:6175551212@192.168.1.100

might be translated into:

sip:6175551212-acme-pfi1s7n2pstna@172.16.1.10

Note:

Multiple additional cookies might be appended with each hop (for example, from the external proxy to the home proxy and back).