| 主权项 |
1. A call processing method in a Session Initiation Protocol (SIP) based network involving at least one Push to Talk (PTT) over Cellular (PoC) client and a reception side PoC server, the call processing method by the reception side PoC server comprising:
receiving, by the reception side PoC server, an INVITE request including a Manual Answer Override (MAO) indication from a transmission side PoC server, wherein the MAO indication is for establishing an auto-answer mode in a pre-established session; if a reception side PoC client has the pre-established session with the reception to side PoC server, sending, by the reception side PoC server, an OK response to the transmission side PoC server in response to the INVITE request; and sending, by the reception side PoC server, a communication connection request including the MAO indication to the reception side PoC client, wherein the MAO indication is used to determine that a transmission side PoC client is an authorized user with respect to the reception side PoC client. |
