Method, device and system for data communication control

A data communication control device, comprising:

• a receiving module configured to receive data sent from a first communication device;
• wherein the data is transmitted through at least two types of physical interfaces in sequence;
• and
• a forwarding module configured to forward the data to a second communication device that is pre-configured.

A data communication system, comprising a first IMS subsystem, a data forwarding device and a second IMS subsystem;

• wherein the first IMS subsystem comprises a first security isolation module;
• the first security isolation module comprises a first physical interface, a second physical interface and a first bridge submodule that bridges the first physical interface and the second physical interface;
• the first physical interface is configured to receive data sent from a first communication device and transmit the data to the second physical interface through the first bridge submodule;
• the second physical interface is configured to transmit the data to the data forwarding device;
• wherein the first physical interface and the second physical interface differ in type;
• wherein the data forwarding device is configured to forward the data to the second IMS subsystem that is preconfigured;
• and
• wherein the second IMS subsystem comprises a second security isolation module;
• the second security isolation module comprises a third physical interface, a fourth physical interface and a second bridge submodule that bridges the third physical interface and the fourth physical interface;
• the third physical interface is configured to receive the data forwarded by the data forwarding device and transmit the data to the fourth physical interface through the second bridge submodule;
• the fourth physical interface is configured to transmit the data to a corresponding second communication device, wherein the third physical interface and the second physical interface are of the same type;
• and the fourth physical interface and the first physical interface are of the same type.