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| Header Fields in SIP |
| Page 2 |
| Page 3 |
| Page 4 |
| Page 5 |
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| Page 7 |
| Page 8 |
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Page 11 of 16
20.27 Proxy-Authenticate
A Proxy-Authenticate header field value contains an authentication
challenge.
The use of this header field is defined in [H14.33]. See Section
22.3 for further details on its usage.
Proxy-Authenticate: Digest realm="atlanta.com",
domain="sip:ss1.carrier.com", qop="auth",
nonce="f84f1cec41e6cbe5aea9c8e88d359",
opaque="", stale=FALSE, algorithm=MD5
