USSD系统采用面向连接的交互式会话方式，是会话类业务的理想载体。

USSD service system adopts connection-oriented conversational mode, which is an ideal carrier for conversational services.

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该软件占用内存少，运算时间短，采用中文交互式会话方式，使用方便，已在IBM机上调试通过。

The software uses less internal storage, takes less operation time and adopts the Chinese interactive mode which makes its use very convenient. The method has passed the debugging test on IBM-PC.

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在通信开始时设置的调整配置文件以某种方式影响会话的其余部分。

Tuning profiles, set up at the start of communication, affect the rest of the session in some way.

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