Subject: [Sip] two questions

From: sip learner <[email-masked]>
Date: Thu, 21 Nov 2002 22:28:20 -0800 (PST)

Sir,

       I am a student started working on sip.

please  clarify  my douths:

1.SIP uses offer/anwer model to negotiate session parameters.

   does this mean that invite/ok/ack transaction.

2/what is a dialogue mean in SIP?? can any one please help me in knowing more about these 2 questions.

-SL

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