iau-v1-squashfs-sysupgrade-v2.2.4.bin
		*Add Layer2 QoS Support
		*Add function that cloud management xfrpc ssh port down interface
		*Add function that mac address information to interface board information.		
		*Add SIP compatibility parameter 
		*Add domain name resolution configuration to page
		*Removed gateway required restriction in mgt settings.		
		*Optimized Codec
		*Optimized firmware upgrade page
		*Optimized routing option		
		*Fixed the problem that static routing affects network status page display
		*Fixed the problem that analog phone display time is not correct
		*Fixed the problem that Stability calls are filling up the CPU.		
		*Fixed the problem that The display mode of local number is wrong.
		*Fixed the problem that call to SIP phone from analog phone with abnormal sound when using codec ilbc.