[SIPForum-discussion] very imp question about route & record route

[mwilliam prusty]

can any body tell that 

 suppose the call setup is lke   A  p1    p2     B

here A is user agent client. B is user agent  server. p1 & p2 are proxy. 
1.let A has generated an  INVITE request to B . in which case the invite request generated by A will conatin ROUTE header field.????

2. let p1 has rcved the INVITE request containg ROUTE heder field.

is it mandatory that the invite from point p1 to p2 will conatin RECORD ROUTE heder field.????? if yes why if not why???



plz anser
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