A study on the constitution and working principle of MNP (Microcom Networking Protocol) in dial MODEM, analyzing the procedure of communication using MNP. It is of great significance for our country to promote the research level of MODEM.

• 对拨号调制解调器中广泛应用的MNP（MicrocomNetworkingProtocol）协议进行了深入的研究，详细讨论了该协议的总体构成与工作原理，并对采用MNP协议的通讯过程进行了仔细地分析，对提高我国高档调制解调器的研究水平有较大的现实意义。