¶ 4G use
SIM cards for mainland China only
¶ 1 Hardware connection
- Install the EC20 module to the specified location
- Insert the sim card into the card slot on the board
¶ 2 Software use
YY3588 has been automatically dialed up to the Internet by default, and the user does not need to do anything
¶ 2.1 View network nodes
$ ifconfig
...
wwan0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500
inet 10.8.40.95 netmask 255.255.255.192 destination 10.8.40.95
inet6 fe80::de0c:b189:8255:bbd6 prefixlen 64 scopeid 0x20<link>
unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 1000 (UNSPEC)
RX packets 236 bytes 21374 (20.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 277 bytes 22558 (22.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wwan0 is a 4G network node
¶ 2.2 Verify whether you can access the Internet
# ping -I wwan0 -c 4 www.baidu.com
PING www.baidu.com (183.240.98.198) from 10.8.40.95 wwan0: 56(84) bytes of data. 64 bytes from 183.240.98.198 (183.240.98.198): icmp_seq=1 ttl=53 time=38.2 ms 64 bytes from 183.240.98.198 (183.240.98.198): icmp_seq=2 ttl=53 time=36.3 ms 64 bytes from 183.240.98.198 (183.240.98.198): icmp_seq=3 ttl=53 time=27.7 ms 64 bytes from 183.240.98.198 (183.240.98.198): icmp_seq=4 ttl=53 time=29.0 ms --- www.baidu.com ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3006ms rtt min/avg/max/mdev = 27.731/32.818/38.229/4.528 ms ```