CISCO3945/K9 Overview


    Cisco 3945 Integrated Services Router(ISR)
  • Modular Services Performance Engine (SPE) 100, which can be upgraded for even higher performance as next-generation WAN environments evolve
  • 3 integrated 10/100/1000 Ethernet ports with 2 ports capable of RJ-45 or SFP connectivity
  • 4 service module slots
  • 4 Enhanced High-Speed WAN Interface Card (EHWIC) slots
  • 4 onboard digital signal processor (DSP) slots
  • 1 Internal Services Module slot
  • Dual integrated power supplies
  • Fully integrated power distribution to modules supporting 802.3af Power over Ethernet
  • Embedded hardware-accelerated VPN encryption for secure connectivity
  • Integrated threat control using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering
  • Unified Communications
  • High-density-packet voice DSP module, optimized for voice and video support
  • Standards-certified VoiceXML browser services
  • Cisco Unified Border Element capabilities
  • Cisco Unity Express voicemail support
  • Support for Cisco Communications Manager Express and Survivable Remote Site Telephony


Modularity Features and Benefits:

The Cisco 3900 Series provides significantly enhanced modular capabilities while maintaining investment protection for customers. Taking advantage of common interface cards across a network greatly reduces the complexity of managing inventory requirements, implementing large network rollouts, and maintaining configurations across a variety of branch-office sizes.

Architectural Features


Cisco Services Performance Engine (SPE)

• The Cisco 3900 Series offers field-replaceable SPEs.
• These SPEs allow you to protect your initial investment in the Cisco 3900 platform for a longer time period and scale router performance as your network and branch-office needs grow.

Cisco Services Module


fig 4
fig 5
• A service-module slot replaces the network module and the extension module for voice and fax (EVM) slots and is offered on Cisco 3900 Integrated Services Routers.
• Each service-module slot offers high data-throughput capability:
• Up to 4-Gbps aggregate toward the router processor.
• Up to 2-Gbps aggregate to other module slots over the MGF.
• Service-module slots are highly flexible, with support for doublewide service modules, which are service modules that require two service-module slots. Doublewide service modules provide flexibility for higher-density modules.
• Service-module slots provide twice the power capabilities relative to the network-module slots, allowing flexibility for higher-scale and better-performance modules.
• An adapter module enables backward compatibility with existing network modules, enhanced network modules (NMEs), and EVMs.
• You can manage power to service-module slots by extensions similar to the Cisco EnergyWise framework, so your organization can reduce energy consumption in your network infrastructure. Full Cisco EnergyWise support will be available in future software releases.

Cisco Enhanced High Speed WAN Interface Card (EHWIC)

fig 6
• The EHWIC slot replaces the high-speed WAN interface card (HWIC) slot and can natively support HWICs, WAN interface cards (WICs), voice interface cards (VICs), and voice/WAN interface cards (VWICs).
• Three integrated EHWIC slots on the Cisco 3945E and Cisco 3925E or four integrated EHWIC slots on the Cisco 3945 and Cisco 3925 allow for flexible configurations.
• Each HWIC slot offers high-data-throughput capability:
• Up to 1.6-Gbps aggregate toward the router processor.
• Up to 2-Gbps aggregate to other module slots over the MGF.
• Flexibility to support doublewide modules is enabled by combining two EHWIC slots. Up to 2 doublewide HWIC (HWIC-D) modules are supported.

Cisco High-Density Packet Voice Digital Signal Processor (DSP) Module (PVDM3) Slots on Motherboard

fig 8
• PVDM3 slots natively support PVDM3 modules, providing support for richer density for rich-media voice and video.
• Each PVDM3 slot connects back to the system architecture through a 2-Gbps aggregate link through the MGF.
• Investment protection for PVDM2 modules is supported through an adapter module.
• You can manage power to the PVDM slots by extensions similar to the Cisco EnergyWise framework, so your organization can reduce energy consumption in your network infrastructure. Full Cisco EnergyWise support will be available in future software releases.


Cisco 3945 Integrated Services Routers (ISR) CISCO3945/K9 offers high performance and slot densities in voice, video, security, mobility, and data services, enabling customers from small business to large company. Designed to address customer business requirements, the Cisco 3945 Series with field-replaceable modular architecture provides increased capacity and performance as your network grows. New or used CISCO3945/K9 either ships with C3900-SPE150/K9 by default, which houses 4 PVDM slots, 1 ISM slot, and 4 EHWIC slots in addition to the system memory. The SPE provides a modular approach to system upgradability such that you can upgrade Cisco 3900 Series routers deployed in the field with new performance and capabilities with a simple SPE swap.

Buying an original new CISCO3945/K9, you would also read below details more in ordering information: Cisco 3945 with 3 onboard GE, 4 DSP slots, 1 ISM slot, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base.


Manufacturer Cisco Systems, Inc
Manufacturer Part Number CISCO3945/K9
Product Type Router
Form Factor Desktop - modular - 3U
Connectivity Technology Wired
Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet
Capacity Cisco Unified Communications Manager Express sessions : 350
Cisco Unified SRST sessions : 1200
Network / Transport Protocol IPSec, PPPoE, L2TPv3
Routing Protocol OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-based routing (PBR)
Remote Management Protocol SNMP, RMON
Encryption Algorithm SSL
Features Firewall protection, VPN support, MPLS support, Syslog support, content filtering, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Quality of Service (QoS), Dynamic Multipoint VPN (DMVPN)
Compliant Standards IEEE 802.3, IEEE 802.1Q, IEEE 802.1ah, IEEE 802.1ag
DRAM Memory 1 GB (installed) / 2 GB (max)
Flash Memory 256 MB (installed) / 8 GB (max)
LED Status Lights Indicators Link activity, power
Connectivity Slots
Router Interfaces 3 x 10Base-T/100Base-TX/1000Base-T - RJ-45
Management : 1 x console - RJ-45
Management : 1 x console - mini-USB Type B
Serial : 1 x auxiliary - RJ-45
Hi-Speed USB : 2 x 4 PIN USB Type A
2 x SFP (mini-GBIC)
Expansion Slots Total (Free) 4 ( 4 ) x EHWIC
4 ( 4 ) x PVDM
2 ( 1 ) x CompactFlash Card
1 ( 1 ) x Expansion Slot
4 ( 4 ) x service module (SM)
Power Supply
Power Device Power supply - internal
Voltage Required AC 120/230 V ( 47/63 Hz )
Dimensions / Weight / Miscellaneous
Width 47.6 cm
Depth 43.8 cm
Height 13.3 cm
Weight 17.7 kg
Compliant Standards CISPR 22 Class A, CISPR 24, EN55024, EN55022 Class A, EN50082-1, AS/NZS 60950-1, AS/NZ 3548 Class A, CAN/CSA-E60065-00, ICES-003 Class A, CS-03, FCC CFR47 Part 15, EN300-386, UL 60950-1, IEC 60950-1, EN 60950-1, CSA C22.2 No. 60065, BSMI CNS 13438
System Software
IOS Software Included Cisco IOS IP Base
Brand Cisco
Shipping Weight 1.5000kg
Shipping Width 0.550m
Shipping Height 0.200m
Shipping Length 0.450m
Shipping Cubic 0.049500m3

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