USR-N668 User Manual Technical Support: h.usriot.com
Jinan USR IOT Technology Limited 2
Contents
USR-N668 User Manual ........................................................................................................................................... 1
Features...................................................................................................................................................................... 4
1. Get Start ............................................................................................................................................................. 5
1.1.Hardware Test............................................................................................................................................... 5
1.2.NTE Network Test Environment.................................................................................................................... 7
1.3. Default parameter test ................................................................................................................................ 7
2. Product overview................................................................................................................................................ 9
2.1. Basic parameters ....................................................................................................................................... 10
3. Hardware Design .............................................................................................................................................. 11
3.1. Hardware Dimensions........................................................................................................................ 11
3.2. Pin definition ..................................................................................................................................... 11
3.2.2. Pin definition .................................................................................................................................. 14
3.2.3. LED Indicator................................................................................................................................... 14
4. Product Functions............................................................................................................................................. 15
4.1. Basic Functions .......................................................................................................................................... 15
4.1.1. IP address / Subnet mask / Gateway............................................................................................... 15
4.1.2. DNS................................................................................................................................................. 17
4.1.3. VPN-PPTP........................................................................................................................................ 17
4.1.4. VPN-GRE ......................................................................................................................................... 18
4.1.5. Network diagnosis .......................................................................................................................... 19
4.1.6. Restore factory settings .................................................................................................................. 20
4.1.7. Web Server ..................................................................................................................................... 20
4.1.8. Firmware upgrade........................................................................................................................... 21
4.2. Transtransmission function........................................................................................................................ 22
4.2.1. TCP Client........................................................................................................................................ 22
4.2.2. TCP Server....................................................................................................................................... 24
4.2.3. UDP Client....................................................................................................................................... 26
4.2.4. UDP Server...................................................................................................................................... 28
4.2.5. Httpd Client..................................................................................................................................... 29
4.2.6. SSL Client ........................................................................................................................................ 31
4.2.7. V-COM ............................................................................................................................................ 32
4.3. Serial port Functions.................................................................................................................................. 33
4.3.1. Serial port framing mechanism....................................................................................................... 33
4.3.2. RFC2217-like................................................................................................................................... 33
4.4. Characteristic function............................................................................................................................... 34
4.4.1. Socket B .......................................................................................................................................... 34
4.4.2. Heartbeat Packet Function ............................................................................................................. 35
4.4.3. Registration package....................................................................................................................... 36
4.4.4. Modbus TCP.................................................................................................................................... 37
4.4.5. No data reconnection ..................................................................................................................... 38
4.4.6. DDNS............................................................................................................................................... 39
4.4.7. Remote management and remote monitoring............................................................................... 39
