messaging+protocol技术资料下载专区，收录294份相关技术文档、开发源码、电路图纸等优质工程师资源，全部免费下载。
A reference of SIP protocol stack, very good.
HCI USB driver for Linux Bluetooth protocol stack
PIC USB source code,include usb protocol stack.
ATMEL 90usb128 USB source,include USB protocol stack.
UBX protocol specification for u-blox 5 receiver.
protocol for serial communication in rs485 network device
email client and support pop3、smtp、imap protocol.
SIP Understanding the Session Initiation Protocol, Second Edition
document about DEEC protocol for wireless sensor network
microwire protocol for cypress 63513 and microwire eeprom