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Cisco Integrated Services Router Hardware Installation Guide
Chapter 1 Product Overview
Cisco 810 Series
Memory
The Cisco 819HG and Cisco 819G ISRs uses non-upgradable flash memory and main memory. The
onboard flash memory contains the Cisco IOS software image and the boot flash contains the ROMMON
boot code. Table 1-11 lists the memory requirements for Cisco 819 ISRs.
Embedded 3G Modem
The 3G cellular interface is the primary WAN data link, but it can also be used as a backup data link.
The 3G technology is third-generation wide-area cellular technology that is used in broadband wireless
data in a mobile environment.
Embedded 4G LTE Modem
The Cisco 819HG-4G and Cisco 819G-4G routers have an embedded 4G LTE modem provided by Sierra
Wireless. The Verizon SKUs come with an MC7750 modem, the AT&T SKUs come with an MC7700
modem, and the Global SKUs come with an MC7710 modem.
SIM Card
Table 1-12 lists the SIM Card slots available for Cisco the 819 ISRs.
3G/4G Green (one blink and
then a pause)
For 1xRTT, EGPRS, or GPRS service.
Green (two blinks and
then a pause)
For EVDO, EVDO/1xRTT, or UMTS service.
Green (three blinks and
then a pause)
For EVDO/1xRTT RevA, HSPA, or HSUPA/HSDPA
service.
Green (four blinks and
then a pause)
For HSPA+ service.
Green (Solid) For 4G/LTE service.
Off No Service.
Table 1-10 4G LTE LED Descriptions (continued)
LED Color Description
Table 1-11 Memory Requirements for Cisco 819 ISRs
Memory Requirements
Cisco 819HG
Cisco 819G
(with 3G)
Cisco 819HGW
Cisco 819HWD
(with WiFi)
Cisco 819HG-4G
Cisco 819G-4G
(with 4G LTE)
256 Compact Flash support in
IDE mode (internal)
Yes — —
1 GB Compact Flash support in
IDE mode (internal)
—YesYes
512 MB DRAM Yes — —
1 GB DRAM — Yes Yes