Datasheet

14 15
Product Transition Matrix
Transition Matrix continued
Transition Matrix continued
Product Transition Matrix
Cisco 1721/1841 Product Comparison
Cisco 1721 Cisco 1841
Form Factor
Desktop Desktop (1 RU)
Chassis Type
Plastic Metal
DRAM (default)
64 MB 128 MB
DRAM (maximum)
128 MB 384 MB
Flash (default)
32 MB 32 MB
Flash (maximum)
32 MB Up to 128 MB
AC Power Supply
External Internal
Onboard AIM Slot
0 1
Support for High Speed WICs (HWICs)
No Yes
LAN Ports
1 10/100 2 10/100
Integrated Hardware-based Encryption
Optional Yes
USB Ports (v1.1)
No 1
Console Port (Up to 115.2 Kbps)
1 1
Auxiliary Port (Up to 115.2 Kbps)
1 1
Cisco 870 and 880 Product Comparison (continued)
Cisco 871, 876, 877, 878 Cisco 881, 886, 887, 887V,
888, 888E
G.SHDSL (ATM Mode)
878 888
G.SHDSL (EFM Mode)
No 888E
VDSL2
No 887V
FXS
No 4 Port (SRST Models)
FXO
No 1 Port (881SRST)
Voice BRI
No 1 Port (888SRST)
USB Ports for Security Tokens
2 Ports (871) 1 Port
Power over Ethernet Support
Optional Optional
Cisco Fixed FE WAN 1800/890 Product Comparison
Cisco 1811, 1812 Cisco 891, 892
Form Factor
Desktop Desktop
Rack/Wall Mountable
Yes Yes
DRAM (default)
128 MB 512 MB
DRAM (maximum)
384 MB 512 MB
Flash (default)
32 MB 256 MB
Flash (maximum)
128 MB 256 MB
Integrated LAN Switch
8-port Switch 8-port Switch
Fast Ethernet WAN
2 Ports 1 Port
Gigabit Ethernet WAN
No 1 Port
Back-up WAN
v.92 Modem (1811)/
ISDN S/T BRI (1812
v.92 Modem (891)/
ISDN S/T BRI (892)
Wireless Option
Integrated 802.11a/b/g Integrated 802.11a/b/g/n
USB Ports (v 2.0)
2 Ports 2 Ports
Integrated Power over Ethernet Support
Optional Optional
Real Time Clock
Yes Yes
Cisco 1751/1760, 2600, and 2800 Product Comparison
Cisco 1751, 1760 Cisco 2600 Cisco 2800
Form Factor
Desktop and 19”
Rack-mount
19” Rack-mount
(Up to 2 RU)
19” and 23”
Rack-mount Options
DRAM (default)
128 MB 256 MB 256 MB
DRAM (maximum)
128 MB (1751)
160 MB (1760)
256 MB 1 GB
Flash (default)
32 MB Up to 32 MB 64 MB
Flash (maximum)
64 MB (1760) Up to 128 MB Up to 256 MB
Onboard DSP Slot
2 0 Up to 3
Onboard AIM Slot
0 1 2
Support for High Speed
WICs (HWICs)
No No Yes
LAN Ports
1 10/100 Up to 2 10/100 2 10/100 or
10/100/1000
Integrated Hardware-based
Encryption
Optional Optional Yes
Integrated Inline Power/
PoE Support
No No Yes
USB Ports
No No Yes, up to 2
Console Port (Up to 115.2 Kbps)
1 1 1
Auxiliary Port (Up to 115.2 Kbps)
1 1 1