Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE Release Notes
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Release Notes for Cisco 4G LTE WWAN EHWICs
OL-25641-04
Summary of Changes Cisco IOS Release 15.2(4)M3 and Later
3G and 2G access technologies and seamless handoff from 2G and 3G to 4G LTE. The 4G LTE mobile
specifications provide multi-megabit bandwidth, more efficient use of the radio network, latency
reduction, and improved mobility. This feature is supported on the Cisco ISR G2 modular platform,
which delivers secure data, voice, video, and mobility services. The Cisco 4G LTE WWAN EHWICs are
single-wide EHWICs supported on the Cisco 819 Series ISRs, Cisco 1900 Series ISRs, Cisco 2900
Series ISRs, and Cisco 3900 Series ISRs. The EHWICs operate over the over 4G LTE and 3G cellular
networks.
specifications provide multi-megabit bandwidth, more efficient use of the radio network, latency
reduction, and improved mobility. This feature is supported on the Cisco ISR G2 modular platform,
which delivers secure data, voice, video, and mobility services. The Cisco 4G LTE WWAN EHWICs are
single-wide EHWICs supported on the Cisco 819 Series ISRs, Cisco 1900 Series ISRs, Cisco 2900
Series ISRs, and Cisco 3900 Series ISRs. The EHWICs operate over the over 4G LTE and 3G cellular
networks.
Summary of Changes Cisco IOS Release 15.2(4)M3 and Later
For Cisco IOS Release 15.2(4)M3 image or later, the external link recovery script is not required. Ensure
that the link recovery script is removed from Flash before upgrading to Cisco IOS Release 15.2(4)M3 or
later, which also contains an embedded modem link recovery mechanism that eliminates the need for
link recovery scripts. Ensure that the cell_recovery_vx.tcl and cel_cli_vx.tcl scripts are removed from
router flash, where x stands for the script version number that is in use, for example, cell_recovery_v2.tcl
and cel_cli_v2.tcl.
that the link recovery script is removed from Flash before upgrading to Cisco IOS Release 15.2(4)M3 or
later, which also contains an embedded modem link recovery mechanism that eliminates the need for
link recovery scripts. Ensure that the cell_recovery_vx.tcl and cel_cli_vx.tcl scripts are removed from
router flash, where x stands for the script version number that is in use, for example, cell_recovery_v2.tcl
and cel_cli_v2.tcl.
The Cisco IOS Release 15.2(4)M3 or later image also requires a mandatory upgrade to the latest versions
of modem firmware. The new modem firmware versions contain significant modem stability
enhancements. Cisco IOS Release 15.2(4)M3 or later should not be installed without upgrading the LTE
eHWIC modem firmware to the appropriate 3.x release. The following are the new firmware versions
supported on the LTE SKUs in Cisco IOS Release 15.2(4)M3 or later:
of modem firmware. The new modem firmware versions contain significant modem stability
enhancements. Cisco IOS Release 15.2(4)M3 or later should not be installed without upgrading the LTE
eHWIC modem firmware to the appropriate 3.x release. The following are the new firmware versions
supported on the LTE SKUs in Cisco IOS Release 15.2(4)M3 or later:
•
EHWIC-4G-LTE-V : 3.5.10.6
•
EHWIC-4G-LTE-A : 3.5.10.2
•
EHWIC-4G-LTE-G : 3.5.19.4
Cisco IOS Release 15.2(4)M3 or later also includes an upgrade to a newer and more stable version of
vendor-provided SDK Version 1.8.0 that provides support for the new modem firmware.
vendor-provided SDK Version 1.8.0 that provides support for the new modem firmware.
The modem firmware files and the associated documentation for upgrading the modems are available at
the following locations:
the following locations:
•
EHWIC-4G-LTE-V : 3.5.10.6 -
•
EHWIC-4G-LTE-A : 3.5.10.2 -
•
EHWIC-4G-LTE-G : 3.5.19.4 -