Robustel R1520 User Guide
RT056_UG_R1520_v.1.0.3 Dec. 25, 2021 124/159
Display the current status of "Smart Roaming". Including Scanning,
Connectiing, Connected, Inactive and other statuses, respectively indicating
that it is searching for available networks, connecting to the network, the
network is connected, and the function is not activated.
Shows the current method of selecting the carrier network. Including
Automatic and Manual two methods, respectively refer to the automatic
selection according to the standard specification and the software selection
according to the network quality, and the software will switch between
these two methods in a cycle.
The time elapsed since
the last search for
available networks
Shows the elapsed time since the last search for available networks. "Smart
Roaming" restart will refresh this time.
PLMN = MCC + MNC, which is the combination of mobile country code and mobile
network code.
The current network status, including Current, Visible, Forbidden, Unknown, etc.,
respectively indicate the current use of this network, available network, forbidden
network and unknown network.
Current wireless access technologies, including 3G/4G/5G.
Current signal quality, used in 3G and 4G networks.
current reference signal received power, used in 4G and 5G networks.
(When connecting to 5G, you cannot see the signal strength RSSI, only the signal
power RSRP)
The current network delay.
The current network packet loss rate.
The current health check status, including Pending, Good, Degraded, Failed, etc.,
respectively indicate that the current network has not undergone a health check,
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