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TCP/UDP/SSL Characteristics

SIMCOM의 LTE 모듈에서 지원하는 Network 전송계층(TCP/UDP/SSL-TLS)의 특징을 아래에 간단하게 서술한다.

 

 

 

1. Support connecting TCP/UDP server

TCP connection Module works as TCP clients. It communicates with TCP servers by TCP connections.
UDP connection Module works as UDP clients. It communicates with UDP servers.

 

 

 

2. Support accepting TCP clients

TCP servers Module works as TCP servers. It listens TCP clients accept request and communicates with TCP clients.

 

 

 

3. Support multiple data transmission mode

Direct Push Mode

Host data will be sent to internal protocol stack and forwarded to air interface.

Data received from air interface will be transmitted to internal protocol stack and forwarded to COM ports.

Buffer Access Mode

Host data will be sent to internal protocol stack and forwarded to air interface.

Data received from air interface will be saved into local buffers.

Host could retrieve buffer data by AT commands.

Transparent Access Mode

Host data will be directly sent to air interface.

Data received from air interface will be directly sent to COM ports

 

 

 

4.  Support multiple SSL contexts

 

 

 

5. Support encrypted and unencrypted connections

Unencrypted Connections Module works as TCP clients. It exchanges unencrypted data with TCP servers by TCP connections.
Encrypted Connections Module works as SSL clients. It exchanges encrypted data with SSL servers by TCP connections

 

 

 

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