METHOD AND APPARATUS FOR CALL PROCEEDING IN CALL CONTROL OF APPLICATION SERVER

摘要

The invention discloses a method for call proceeding in call control of an application server, comprising: the application server sending an Offer message to a second party after making a media negotiation with a first party; the application server receiving an Answer message sent from the second party, and transforming the Answer message into the Offer message and then sending to the first party, wherein, the Offer message carries a confirmation request for a Precondition state of the first party; the application server receiving the Answer message sent from the first party, wherein, the Answer message carries a confirmation response to the Precondition state from the first party; when determining that the Answer message meets a condition for transforming the Answer message, the application server transforming the Answer message into the Offer message and then sending to the second party. The invention discloses an apparatus for call proceeding in call control of an application server. The invention decreases unnecessary signaling, avoids the oscillation of media negotiation and improves quality of service.