مطحن دقيق دار السلام
مطحن صيني موديل 3261 اربعة رولpriat The Session Initiation ProtocolThe Internet Protocol JournalCisco (SIP) defined in RFC 3261 6 is an application level signaling protocol for setting a voice networking model that is SIP signaled IP based and packet switched not . دردشة مجانية