USR-DR504-E User Manual
Jinan USR IOT Technology Limited
Tech Support: h.usriot.com
38
Number
Implication
0
Less than -140 dBm
1. . . 96
-140. . . -45 dBm
97
Greater than or equal to -44 dBm
99
Unknown or unmeasured
11. AT+SYSINFO
Function: Query module ’s network information
Format:
Query current parameter:
AT+SYSINFO{CR} or AT+SYSINFO?{CR}
{CR}{LF}+SYSINFO: state,srv_domain ,roam_status,sys_mode,sim_state{CR}{LF}{CR}{LF}
Parameter
state: current network service status
Figure 4
Sever status list
Number
Implication
0
No service
1
Restricted service
2
Have a service
3
Restricted regional services
4
Power saving state
srv_domain: business domain
Figure 5
Business domain list
Number
Implication
0
No service
1
Only CS server
2
Only PS server
3
PS+CS server
4
CS,PS is not registered and is in the search state
roam_status: Roaming state
0: Non-roaming state
1: Roaming state
sys_mode: System mode
Figure 6
System mode list
Number
Implication
0
No service
1
AMPS mode
2
CDMA mode
3
GSM mode
4
HDR mode
5
WCDMA mode