LAPB协议的实现源码，是x.25的基础。也可以作为LAPM纠错协议的参考-LAPB protocol implemented source is the basis of X.25. LAPM also can be used as a reference FEC agreement

先前积累和应用的一个关于LAPB的协议实现,同样现在很少见了-Accumulation and application of the previous one on the LAPB protocol, the same is now rarely met with

这是一个优秀的Telcom公司开发的Q921商用协议栈，已在很多项目中使用并验证。实现了完整的Q921 LAPB和LAPD协议栈-This is an excellent Telcom developed Q921 commercial protocol stack has been used in many projects and verify. To achieve a complete Q921 LAPB and LAPD protocol stack