What is the difference between SIP response code 407 and HTTP response code 407 (Proxy Authentication Required)?
+2
A:
According to this PDF, you get (or send) a 407 with SIP when you cannot authenticate the originator because no credentials are provided.
An HTTP 407 is, as you said, given when proxy authentication is required - essentially, they're the same.
Andy Mikula
2009-06-24 16:07:56
SIP's 407 says "you need to authenticate to use this communication channel" (as opposed to SIP's 401 - "you need to authenticate to contact this user agent") so yes, SIP's 407 and HTTP's 407 are identical in function.
Frank Shearar
2010-05-27 08:53:28