Call processing method and device

A call processing device, wherein the call processing device is a repeater of a trunking communication system, wherein the call processing device comprises:

• a sending unit, configured to send first call establishment requests to repeaters of a plurality of second sites according to a call request initiated by a first terminal within a first site to establish a call, the call request of the first terminal being a call request initiated to a second terminal within one of second sites, and the first call establishment request comprising an identification of the second terminal;
• a receiving unit, configured to receive call establishment responses sent by the repeaters of the second sites in response to the first call establishment requests, and receive a second call establishment request sent by one of the repeaters of the second sites, the second call establishment request being sent by the one of the repeaters of the second sites according to a call request initiated by the second terminal to the first terminal, and the second call establishment request comprising an identification of the first terminal;
• and
• a judging unit, configured to judge whether the receiving unit receives the second call establishment requests sent by the one of repeaters of the second sites before the call establishment response sent by all repeaters of the second sites is received,
• wherein the sending unit being also configured to, when the judgment result of the judging unit is yes, send a call collision notification to the first terminal to notify the first terminal to delay the call, and send a call cancellation request to all second sites, in order to cancel the call, and wherein the receiving unit is also configured to, when the judgement result of the judging unit is yes, receive a call cancellation request from the one of the repeaters of the second sites, in order to cancel the call.

A repeater of a call processing system of a trunking communication system, comprising:

• a transceiver, configured to send first call establishment requests to repeaters of a plurality of second sites according to a call request initiated by a first terminal within a first site to establish a call, the call request of the first terminal being a call request initiated to a second terminal within one of the second sites, and the first call establishment request comprising an identification of the second terminal;
• and
• a processor, configured to judge whether the transceiver receives a second call establishment request sent by the one of the repeaters of the second sites before the transceiver receives call establishment responses sent by all repeaters of the second sites in response to the first call establishment requests, the second call establishment request being sent by the one of the repeaters of the second sites according to a call request initiated by the second terminal to the first terminal, and the second call establishment request comprising an identification of the first terminal,
• wherein if yes, control the transceiver to send a call collision notification to the first terminal to notify the first terminal to delay the call, and control the transceiver to send a call cancellation request to all second sites, in order to the cancel the call, and control the transceiver to receive a call cancellation request from the one of the repeaters of the second sites, in order to cancel the call.