Vanguard 3000 Multicarrier Cellular Data Modem & IP Router PN 134732-VG3000 Rev. D| Page 19
Channel
Cell Site channel number at which the modem is connected and is useful for the carrier in the event of
troubleshooting.
Frequency
Cellular frequency band the modem is using. All U.S. CDMA carriers use 800MHz and/or 1900MHz; GSM/UMTS
carriers in other countries may use 850MHz/900MHz/1800MHz/1900MHZ GSM bands or
800MHz/850MHz/900MHz/1900MHZ/2100MHz bands.
Roaming
Displays Roaming or Not Roaming.
Signal Strength (dBm)
Measured in dBm, this is the Received Signal Strength Indication (RSSI).
EC/IO.
Measured in dBm, EC/IO is a measure of interference. Values closer to 0 indicate weaker interference.
3.1.2
SYSTEM
Figure 18: Unit Status — System