Uclinux is a derivative of linux operating system intended for microcontrollers without memory management units ( mmus ) . this paper discusses an embedded sip server system based on uclinux Uclinux是专为无存储器管理单元( mmu )的微控制器打造的嵌入式linux操作系统。本文详细讨论了一种基于uclinux的嵌入式sip服务器系统。