The Cisco 3900 Series builds on the best-in-class offering of the existing Cisco 3800 Series Integrated Services Routers by now offering four platforms: the Cisco 3945E, Cisco 3925E, Cisco 3945, and Cisco 3925 Integrated Services Routers.
The Cisco 3900 Series offers embedded hardware encryption acceleration, voice- and video-capable DSP slots, optional firewall, intrusion prevention, call processing, voicemail, and application services. In addition, the platforms support the industry's widest range of wired and wireless connectivity options such as T1/E1, T3/E3, xDSL, copper, and fiber Gigabit Ethernet.
The Cisco 3900 Series offers superior performance and flexibility for flexible network deployments from small business offices to large enterprise offices-all while providing industry-leading investment protection.

Specification

Product
Product id	299219
Brand	Cisco Systems
Partnr	C3945-CME-SRST/K9
EAN/UPC code	882658310225
Ethernet LAN features
Ethernet LAN	Y
Network
Networking standards	IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ah, IEEE 802.3u
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Wireless LAN features
Wi-Fi	Y
Management features
Web-based management	Y
Quality of Service (QoS) support	Y
Ports & interfaces
WAN connection	Ethernet (RJ-45)
Ethernet LAN (RJ-45) ports	3
I/O ports	2 x SFP 2 x serial 1 x USB (Type B)
Expansion slots	16
Protocols
Management protocols	CBWFQ, WRED, QoS, PBR, NBAR
Supported network protocols	IPv4, IPv6, OSPF, EIGRP, BGP, IS-IS, IGMPv3, PIM SM, PIM SSM, DVMRP, IPv4-to-IPv6 Multicast, MPLS, Layer 2 & Layer 3 VPN, IPSec, L2TPv3, BFD, IEEE802.1ag, IEEE802.3ah
Technical details
Rack mounting	Y
Form factor	3U
Plug and Play	Y
Weight (imperial)	60 lbs
Features
Internal memory	2048 MB
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility	47 CFR, 15 ICES-003 A, EN55022 A, CISPR22 A, AS/NZS 3548 A, VCCI V-3 CNS 13438, EN 300-386, EN 61000, EN 55024, CISPR 24, EN50082-1
Design
Product colour	Black, Grey
System requirements
Minimum RAM	1024 MB
Power
Input current	7.1 - 3 A
Power consumption (typical)	540 W
Power over Ethernet (PoE)	Y
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	5 - 85 procent
Storage relative humidity (H-H)	5 - 95 procent
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Operating temperature (T-T)	32 - 104 °F
Weight & dimensions
Width	438.15 mm
Depth	476.25 mm
Height	133.35 mm
Weight	27200 g
Dimensions (W x D x H)	17.25 x 18.75 x 5.25 "
Other features
Mounting	N
Input frequency	47/63 Hz
Input voltage	100 - 240 V
Power supply type	AC
Dimensions (WxDxH)	438.15 x 476.25 x 133.35 mm
Networking features	Gigabit Ethernet