US Robotics USR3520 User Manual page 28

Signal Strength

Displays the received signal strength.
ECIO

Displays the energy per chip over the interference. This is a typical way to indicate the quality of 3G
networks.
Technology

Displays the technology used by the wireless operator.
Voice number

Displays the voice number linked to the SIM card for 3G wireless operators.
Revision: 1.00 Copyright 2015 U.S. Robotics Corporation 28 | P a g e