本文介紹了一種在Arm 9 處理器和Linux 操作系統(tǒng)的嵌入式組合中實現(xiàn)數(shù)據(jù)終端設備
與無線通信模塊之間的串行通信鏈路復用功能的新的方法。這種方法利用Linux 偽終端功
能，在數(shù)據(jù)終端設備和無線通信模塊之間實現(xiàn)一個串行通信鏈路復用層，與一般的實現(xiàn)數(shù)據(jù)終端設備與無線通信模塊之間串行通信鏈路復用協(xié)議TS27.010 的方法相比，更簡單、靈活，并具有通用的特點。本方法已成功應用于彩信和短信功能的整合中。
關鍵詞：串行通信鏈路復用；偽終端；嵌入式系統(tǒng)

Abstract： A new approach to Terminal Equipment to Mobile Station (TE-MS) multiplexer
in the embedded system of CPU based on Arm 9 in combination with Linux OS is proposed
in this article. By utilizing Linux pseudo terminal in the approach, a serial multiplexer layer can be implemented between terminal equipment and mobile station. Comparing to the normal method of implementing Terminal Equipment to Mobile Station (TE-MS) multiplexer protocol of TS 27.010, it is simpler and more flexible, and still universal. And it has been successfully used to integrate SMS and MMS.
Keywords：TE-MS Multiplexer；Pseudo Terminal； Embedded System