拨号排查步骤
130|rk3399pro:/ # lsusb
Bus 001 Device 004: ID 2207:1005
Bus 002 Device 002: ID 05e3:0610
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0002
Bus 003 Device 001: ID 1d6b:0001
Bus 004 Device 001: ID 1d6b:0001
Bus 007 Device 001: ID 1d6b:0002
Bus 008 Device 001: ID 1d6b:0003
# 移远EC20X模块
Bus 002 Device 007: ID 2c7c:6026
Bus 002 Device 003: ID 05e3:0610
Bus 002 Device 004: ID 046d:c31d
Bus 002 Device 005: ID 1c4f:0034
Bus 002 Device 006: ID 0b95:1790
# 打印拨号节点
rk3399pro:/ # ls -l /dev/ttyUSB*
crw-rw---- 1 radio radio 188, 0 2025-06-12 10:35 /dev/ttyUSB0
crw-rw---- 1 radio radio 188, 1 2025-06-12 11:05 /dev/ttyUSB1
crw-rw---- 1 radio radio 188, 2 2025-06-12 10:35 /dev/ttyUSB2
-rw-rw-rw- 1 root root 11 2025-06-12 10:49 /dev/ttyUSB3
# 查询信号
rk3399pro:/ # echo -e "AT+CSQ\r\n" > /dev/ttyUSB1 && cat /dev/ttyUSB1
+CSQ: 29,99
OK
^C
# 查询4G IP地址
130|rk3399pro:/ # ifconfig usb0
usb0 Link encap:Ethernet HWaddr 02:0c:29:a3:9b:6d Driver cdc_ether
inet addr:10.93.14.90 Bcast:10.255.255.255 Mask:255.0.0.0
inet6 addr: fe80::c:29ff:fea3:9b6d/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:151 errors:0 dropped:0 overruns:0 frame:0
TX packets:345 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10820 TX bytes:47311
# Ping 4G连通性
rk3399pro:/ # ping -I usb0 bing.com
PING bing.com (150.171.27.10) from 10.93.14.90 usb0: 56(84) bytes of data.
64 bytes from 150.171.27.10: icmp_seq=8 ttl=108 time=853 ms
64 bytes from 150.171.27.10: icmp_seq=9 ttl=108 time=62.4 ms
^C
--- bing.com ping statistics ---
25 packets transmitted, 2 received, 92% packet loss, time 36097ms
rtt min/avg/max/mdev = 62.404/457.965/853.527/395.562 ms
# Android的一些4G打印
rk3399pro:/ # logcat | grep NetworkAgent
06-12 10:36:07.914 552 941 D ConnectivityService: registerNetworkAgent NetworkAgentInfo{ ni{[type: MOBILE[LTE], state: CONNECTED/CONNECTED, reason: connected, extra: cmnet, failover: false, available: true, roaming: false]} network{100} nethandle{432902426637} lp{{InterfaceName: usb0 LinkAddresses: [10.93.14.90/8,] Routes: [0.0.0.0/0 -> 10.93.14.165 usb0,10.0.0.0/8 -> 0.0.0.0 usb0,] DnsAddresses: [211.136.150.86,211.136.150.88,] UsePrivateDns: false PrivateDnsServerName: null Domains: null MTU: 1500 TcpBufferSizes: 524288,1048576,2097152,262144,524288,1048576}} nc{[ Transports: CELLULAR Capabilities: SUPL&INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VPN&NOT_ROAMING&FOREGROUND&NOT_CONGESTED&NOT_SUSPENDED Unwanted: LinkUpBandwidth>=51200Kbps LinkDnBandwidth>=102400Kbps Specifier: <1>]} Score{10} everValidated{false} lastValidated{false} created{false} lingering{false} explicitlySelected{false} acceptUnvalidated{false} everCaptivePortalDetected{false} lastCaptivePortalDetected{false} clat{null} }
06-12 10:36:07.915 552 651 D ConnectivityService: NetworkAgentInfo [MOBILE (LTE) - 100] EVENT_NETWORK_INFO_CHANGED, going from null to CONNECTED
06-12 10:36:07.984 552 651 D ConnectivityService: Switching to new default network: NetworkAgentInfo{ ni{[type: MOBILE[LTE], state: CONNECTED/CONNECTED, reason: connected, extra: cmnet, failover: false, available: true, roaming: false]} network{100} nethandle{432902426637} lp{{InterfaceName: usb0 LinkAddresses: [10.93.14.90/8,] Routes: [0.0.0.0/0 -> 10.93.14.165 usb0,10.0.0.0/8 -> 0.0.0.0 usb0,] DnsAddresses: [211.136.150.86,211.136.150.88,] UsePrivateDns: false PrivateDnsServerName: null Domains: null MTU: 1500 TcpBufferSizes: 524288,1048576,2097152,262144,524288,1048576}} nc{[ Transports: CELLULAR Capabilities: SUPL&INTERNET&NOT_RESTRICTED&TRUSTED&NOT_VPN&NOT_ROAMING&FOREGROUND&NOT_CONGESTED&NOT_SUSPENDED Unwanted: LinkUpBandwidth>=51200Kbps LinkDnBandwidth>=102400Kbps Specifier: <1>]} Score{10} everValidated{false} lastValidated{false} created{true} lingering{false} explicitlySelected{false} acceptUnvalidated{false} everCaptivePortalDetected{false} lastCaptivePortalDetected{false} clat{null} }
06-12 10:36:08.014 552 651 D ConnectivityService: Sending CONNECTED broadcast for type 0 NetworkAgentInfo [MOBILE (LTE) - 100] isDefaultNetwork=true
右上角可以看到4G满格信号图标显示
Settings中查看
Setting应用 -> Network & internet -> Mobile network
