38
Interface LEDs
Figure 41 SIC-4G-LTE-V (JG742B) panel
Table 62 LED description
WWAN
• Steady green: A link is present.
• Flashing green fast: Data is being transmitted or received.
• Flashing green slowly: The module is searching for 4G WLANs.
• Off: No link is present.
RSSI
• Steady green: Strong signal strength. The RSSI is equal to or greater than –69 dBm.
• Flashing green fast: Middle- or low-level signal strength. The RSSI is equal to or greater
than –89 dBm and less than –69 dBm.
• Flashing green slowly: Low signal strength. The RSSI is equal to or greater than –99
dBm and less than –89 dBm.
• Off: Weak or no signal strength. The RSSI is less than –99 dBm.
EVDO
• Flashing green: The EVDO service is valid.
• Off: The EVDO service is not available.
LTE
• Steady green: The LTE service is valid.
• Off: The LTE service is not available.
GPS
• Steady green: The GPS service is valid.
• Off: The GPS service is not available.
Connecting the antenna and interface cable
For more information about connecting antennas and interface cables for the interface module, see
"4G interface."
Installing a SIM card
1. Push the 4G SIM card holder in the direction marked "OPEN" so the holder projects upwards.
Do not insert the 4G SIM card to the card holder before projecting the card holder up. Do not
forcibly lift the holder.
2. Insert the 4G SIM card along the slide rails to the holder.
3. Put down the holder and push the holder in the direction marked "LOCK" to lock the card in
position.
4. Position the 4G SIM card socket cover and fasten the screws on the cover.
5. Execute the display cellular [slot]/0 all command after the router is started. When "SIM Status
= OK" appears in the output information, the SIM module is identified.
SIC-4G-LTE-A (JG743A)
The SIC-4G-LTE-A (JG743A) module provides access to 4G networks. It supports the following
services:
• LTE.
• UMTS.
• HSPA+.
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