例句與造句

1. Section three , itu - t recommendation h . 323 and the session initiation protocol ( sip ) will been introduced
   323和sip協議框架，以及他們的比較。同時提出了一個基于h
2. It's difficult to find session initiation protocol (sip) in a sentence. 用session initiation protocol (sip)造句挺難的