User Manual

24
Cisco Connected Grid 3G Module Installation and Configuration Guide
OL-25991-01
Configuring the Module
CDMA technology uses spread radio spectrum transmission with concurrent multiple access by dividing
the spectrum shared by multiple users by using channels using unique codes. These codes are filtered by
the receiver using a correlator that accepts only signals (streams of bits) from the desired code channel.
CDMA also employs graceful signal degradation, multipath resistance, inherent frequency diversity, and
interference rejection.
Evolution-Data Optimized (EVDO), also known as 1xEVDO, is a telecommunications standard that
employs the use of multiplexing, CDMA, and TDMA. EVDO was standardized by 3GPP2
(3rd-Generation Partnership Project 2), the global 3G wireless standard specification, and has been
adopted by many mobile service providers who had been previously using CDMA. 1x EVDO
(1x Evolution Data Optimized) supports up to 2.4 Mb/s downlink and 153.6 Kb/s uplink in Revision 0,
while Revision A supports 3.1 Mb/s downlink and 1.8 Mb/s uplink.
CDMA2000, also known as CDMA2000 1x and as 1xRTT (1 times Radio Transmission Technology),
had evolved from IS-95 (cdmaOne), the first CDMA-based digital cellular (2D) standard, with which
CDMA2000 is backward-compatible. The suffix 1x means that it uses the same 1.25 MHz bandwidth as
IS-95 has always used and supports up to 144 Kb/s, initially. CDMA2000 was standardized by the
3GPP2 committee and is based on the standards of CDMA2000 1X, CDMA2000 EVDO Rel. 0,
CDMA2000 EVDO Rev. A, and CDMA2000 EVDO Rev. B.
The Cisco Connected Grid Module—3G EVDO Rev A/0/1xRTT module is based on 3GPP2 and
supports the CDMA2000 EVDO Rev A and Rel. 0, and CDMA2000 1x operating standards.
Configuring the Module
The module is configured using the system software. This section covers the following topics:
• Prerequisites, page 25
• Configuration Restrictions, page 25
• Configuring the GSM Module, page 25
• Configuring the CDMA Module, page 26
• show Commands, page 27
• Data Account Provisioning, page 30
• GSM Cellular Interface Configuration, page 31
• CDMA Cellular Interface Configuration, page 32
• Configuring WAN Backhaul Redundancy, page 33
Note The 3G module can be plugged into slots 3 to 6 of Cisco 1240 Connected Grid Router, therefore the
interface names used to configure the module can be 3/1, 4/1, 5/1, or 6/1. Interface 3/1 is used in the
configuration examples in this section.
Note The 3G module can be plugged into slots 3 or 4 of Cisco 1120 Connected Grid Router, therefore the
interface names used to configure the module can be 3/1 or 4/1. Interface 3/1 is used in the configuration
examples in this section.