User Manual

15
Cisco Connected Grid 3G Module Installation and Configuration Guide
OL-25991-01
Hardware Overview
Table 12 shows the options used to connect to SIM0 and SIM1 cards:
For information on installing and removing the SIM card, see Installing and Removing the SIM Card
(GSM Module), page 17.
Voltage Monitoring State Machine
A state machine in the 3G module monitors the VCC supply and the voltage conditions that trigger state
changes.
Temperature Monitoring State Machine
The state machine in the Cisco Connected Grid 2G/3G Wireless Connected Grid Module monitors the
embedded module temperature.
Data Rates
The actual throughput rates depend on many different factors, but the theoretical rates for the
technologies follows:
USB Interface
A USB interface is the only communication path used by the router and the module at full-speed (12
Mbps) and high-speed (480 Mbps) data rates. The host acts as the USB host device to interface with the
module. The module uses the USB standard to control the sleep and wake-up states.
Table 12 Specifications to Connect to the SIM Sockets
SIM Socket Enable SIM Socket Select State
0 — No SIM connected
1 0 SIM0 connected
1 1 SIM1 connected
Table 13 GSM and CDMA Data Rates
GSM CDMA
HSPA+: 21.1 Mbps Down; 5.76 Mbps Up EVDO Rev A: 3.1 Mbps Down; 1.8 Mbps Up