v2.2.7-DGW-L301-normal-idc-v10-squashfs-sdcard-5c2c1093.img	
		*Added upnp function
		*Added SoftEther VPN
		*Added NAI related parameters
		*Added ss7 related parameters 
		*Added TLS1.3
		*Added mtu option setting in WAN and MGT
		*Fixed the problem that wireshark can't parse signaling ss7 packet correctly 
		*Fixed the problem that the maxchannels parameter in DGW OEM is not used correctly
		*Fixed the problem that customer failed to test fax at TM
		*Fixed the problem that trunk Status page registration status is not correct.
		*Fixed the problem that /etc/config/network exception occurs after upgrading to the latest compiled version.
		*Fixed the problem that log management_support log page save unprompted
		*Fixed the problem that the firmware reported “exceeding 30M upload file limit”
		*Fixed the problem that the /usr/sbin/odhcpd process reports an error in bridge network mode with dual NICs
		*Fixed the problem that the firmware download via server fails on some HTTPS servers
		*Upgraded system related sys_* class to check_input2 check
		*Optimized ODG UPnP page
		*Optimized the function that T1 to E1 switch to HDB3 encoding by default
		*Optimized the function that initialization of network information is changed to read json to deal with differential, including API interface reading.

v2.2.6-DGW-L301-normal-idc-v10-squashfs-sdcard-cb86b57e.img	
		*Added support for SNMP
		*Added support for IPV6
		*Added support for PRI (Q.SIG) related parameters
		*Added support for cfgdefault_1
		*Added statict route support for management network interface
		*Added support for signaling capture
		*Added hardhdlc parameter
		*Added IP->IP routing in route menue
		*Added SIP trunk registration status display
		*Added network configuration compatibility for dual NIC devices
		*Added call related logs real time print display and download support PRI
		*Fixed the problem that wan port ssh fails to connect after manually rebooting network before burning oem
		*Fixed the problem that cloud management sometimes does not show up
		*Fixed the problem that web does not show the refer parameter
		*Fixed the problem that subnet mask and MAC address can't be displayed
		*Fixed the problem that interface type selection T1, signaling channel display on port status page is not correct
		*Fixed the problem that R2 signaling ports are displayed incorrectly for undocked channels
		*Fixed the problem that  ss7 signaling port not wired channel display incorrectly
		*Fixed the problem that Domain name detection for server address is not compliant
		*Fixed the problem that SS7 host configuration error
		*Fixed the problem that In bridge mode, the IP alias of lan port is displayed
		*Fixed the problem that Single E1 port status does not show up