分布式电子邮件系统协议
DMSP Distributed mail system protocol
基站系统GPRS协议
Base Station System GPRS Protocol BSSGP
基站系统GPRS协议虚拟连接
BSSGP Virtual Connection BVC
基站系统GPRS协议虚拟连接标识
BSSGP Virtual Connection Identifier BVCI
信令协议系统
Signaling protocol system
中间系统到中间系统协议
ISISintermediate system to intermediate system
intermediate system-to-intermediate system(IS-IS
中介系统协议
intermediate system-to-intermediate system protocol
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
无限维离散系统系统
Infinite dimensional discrete time systems
城市和地区信息系统协会
urban and regional information systems association
URISA