Show cellular info command

Show cellular info command

show cellular info

Tty No.:1     /* TTY number, which is consistent with the corresponding async interface*/

Slot:    2      /*Number of the slot where the SIC-3G line card is located*/

Interface: Async 1    /*Corresponding 3G interface*/

3G Type:   WCDMA /* Type of the 3G card, 3G network type that the SIC-3G line card support*/

RSSI:      -69dBm        /* Current RSSI value; a larger value indicates higher signal strength */

Sys mode: WCDMA(5)        /* Working mode of the SIC-3G line card */

Sim status:    Valid USIM card state(1)

Service status: Valid service(2)

Roaming status: Non roaming state(0)

Service domain: PS+CS service(3)

Available PLMN's:

List 1: Status = Registered, SP name = China Unicom,Network = WCDMA

List 2: Status = Available, SP name = China Unicom,Network = GSM/GPRS

Explanation:

1. RSSI

RSSI generally ranges from –85 dBm to –51 dBm. A signal reception of –61 dBm is stronger than that of –85 dBm. Because 3G antennas have unstable signal reception, and the router refreshes RSSI values every 28s, you need to wait for at least 28s to obtain the latest results.

2. Values of servicedomain:

service domain indicates the service domain of the system.

no service:Indicates that services are unavailable.

only CSservice: Indicates that only circuit-switched (CS) services(voice services, such as making and receiving calls) are available.

only PSservice: Indicates that only packet-switched (PS) services (dataservices, such as data upload and download) are available.

PS+CSservice: Indicates that voice and data services are available.

CS and PSnot registered, searching: Indicates that the user is connecting to a 3G network and has not completed voice or data service registration.

3. Values of SIM status:

SIM status indicates the state of the SIM card.

invalid USIM card state or pin code locked: Indicates that the USIM card is invalid.

valid USIM card state: Indicates that the USIM card is valid.

USIM is invalid in case of CS: Indicates that the USIM card is invalid in the CS domain. That is, the user cannot make and receive calls or perform other voice services.

USIM is invalid in case of PS: Indicates that the USIM card is invalid in the PS domain. That is, the user cannot upload and download data or perform other data services.

USIM isinvalid in case of either CS or PS: Indicates that the USIM card isinvalid in the CS and PS domain. That is, the user cannot perform voice and data services.

USIM card is not existent: Indicates that the USIM card does not exist.

PS and CS:

The 3G core network is divided into the CS domain and PS domain. When a user accesses the network, the user will register in the PS or CS domain based on service requirements.

The CS domain provides voice services. After CS registration, the user can make and receive calls.

The PS domain provides data services. After PS registration, the user can perform data transfer (such as download) and other multimedia services.