Cisco 3945 Series Integrated Services Router

Buy or sell a Used Cisco 3945 Series Integrated Services Router. Multiple configurations are available. Please contact us by phone or filling out our quote form for current pricing and availability.

Cisco 3945 Router

Product Details

Manufacturer: Cisco
Part #: Cisco 3945 Router
Price: Contact Us
Warranty: 90 Days

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Cisco 3945 Series Integrated Services Router

The Cisco 3945 Voice Router is a robust and feature-rich networking solution designed specifically for voice and data integration. With its advanced capabilities, this router provides reliable and efficient voice services for organizations of all sizes.

The Cisco 3945 Voice Router offers high-performance routing, switching, and voice gateway functions in a single integrated platform. It supports a wide range of voice protocols, including Session Initiation Protocol (SIP), H.323, Media Gateway Control Protocol (MGCP), and others. This allows seamless integration with existing telephony systems and enables reliable voice communication over IP networks.

The router is equipped with powerful hardware, including high-speed processors and ample memory, to handle demanding voice and data traffic. It provides extensive connectivity options, such as multiple Gigabit Ethernet ports, USB interfaces, and expansion slots, offering flexibility for network expansion and integration with other devices.

Security is a top priority for the Cisco 3945 Voice Router, featuring built-in encryption, firewall, and VPN capabilities. This ensures secure voice communication and protects sensitive data from unauthorized access.

Administrating and managing the router is made easy with Cisco’s intuitive command-line interface (CLI) and web-based management tools. These tools provide comprehensive monitoring, configuration, and troubleshooting capabilities, simplifying network administration tasks.

Overall, the Cisco 3945 Voice Router is a reliable and powerful solution for organizations seeking to integrate voice and data services. It delivers high-quality voice communication, robust performance, advanced security features, and flexible connectivity options, making it an ideal choice for businesses requiring efficient voice networking capabilities.



Part Number Product Description
CISCO3945E/K9 Cisco 3945 with 4 onboard GE, C3900-SPE250/K9, 3 EHWIC slots, 3 DSP slots, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base
CISCO3925E/K9 Cisco 3925 with 4 onboard GE, C3900-SPE200/K9, 3 EHWIC slots, 3DSP slots, 2 SM slots, 256MB CF default, 1 GB DRAM default, IP Base
CISCO3945/K9 Cisco 3945 with 3 onboard GE, C3900-SPE150/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 4 SM slots, 256MB CF default, 1 GB DRAM default, IP Base
CISCO3925/K9 Cisco 3925 with 3 onboard GE, C3900-SPE100/K9, 4 EHWIC slots, 4 DSP slots, 1 ISM slot, 2 SM slots, 256MB CF default, 1 GB DRAM default, IP Base
Embedded hardware-based cryptography acceleration (IPSec + Secure Sockets Layer [SSL]) Yes
Cisco Unified Communications Manager Express Sessions 350
Cisco Unified SRST sessions 1200
Total onboard WAN or LAN 10/100/1000 ports 3
RJ-45-based ports 3
SFP-based ports 2
Service-module slots 4
Doublewide service-module slots 1
EHWIC slots 2
ISM slots 1
Online insertion and removal (OIR) Services modules
Onboard DSP (PVDM) slots 4
Memory DDR2 ECC DRAM: Default 1GB
Memory DDR2 ECC DRAM: Maximum 2 GB
Compact Flash (external): Default Slot 0: 256 MB
Slot 1: None
Compact Flash (external): Maximum Slot 0: 4 GB
Slot 1: 4 GB
External USB 2.0 slots (Type A) 2
USB console port (Type B) (up to 115.2 kbps) 1
Serial console port (up to 115.2 kbps) 1
Serial auxiliary port (up to 115.2 kbps) 1
Power-supply options Internal: AC, PoE, and DC
Redundant power supply Internal: AC, PoE, and DC
AC input voltage 100 to 240 VAC autoranging
AC input frequency 47 to 63 Hz
AC input current range, AC power supply (maximum) 7.1 to 3.0A
AC input surge current 50A
DC Operating Input Voltage 24Vdc – 60Vdc
Max Input Current range, DC power supply (A) 33.2 – 12.4
DC Input Surge Current <50A
Typical power (no modules) (watts) 158
Maximum power with AC power supply (watts) 540
Maximum power with PoE power supply (platform only) (watts) 540
Maximum endpoint PoE power available from PoE power supply (watts) 520
Max power with DC input (W) 574
Maximum endpoint PoE power capacity with PoE boost (watts) 1040
Dimensions (H x W x D) 5.25 x 17.25 x 18.75 in.
(133.35 x 438.15 x 476.25 mm)
Rack height 3RU
Rack-mount 19in. (48.3 cm) EIA Included
Rack-mount 23in. (58.4 cm) EIA Optional
Wall-mount No
Weight with AC power supply (no modules) 39 lb (17.7 kg)
Weight with PoE power supply (no modules) 40 lb (18.1 kg)
Typical weight (with modules) 60 lb (27.2 kg)
Airflow Back and sides to front
Temperature: 5906 ft (1800m) maximum altitude 32 to 104ºF
(0 to 40ºC)
Temperature: 9843 ft (3000m) maximum altitude 32 to 104ºF
(0 to 40ºC)
Temperature: 13123 ft (4000m) maximum altitude 32 to 86ºF
(0 to 30ºC)
Temperature: Short-term per NEBS/5906 ft (1800m) maximum altitude 23 to 122°F
(-5 to 50°C)
Altitude 4,000m (13,000 ft)
Relative humidity 5 to 85%
Short-term (per NEBS) humidity 5% to 90%, not to exceed 0.024 kg water/kg of dry air
Acoustic: Sound pressure (typical/maximum) 57.6/77.6
Acoustic: Sound power (typical/maximum) 67.8/84.7
Safety UL 60950-1

CAN/CSA C22.2 No. 60950-1

EN 60950-1

AS/NZS 60950-1

IEC 60950-1

EMC 47 CFR, Part 15

ICES-003 Class A

EN55022 Class A

CISPR22 Class A

AS/NZS 3548 Class A


CNS 13438

EN 300-386

EN 61000 (Immunity)

EN 55024, CISPR 24


Telecom TIA/EIA/IS-968


ANSI T1.101

ITU-T G.823, G.824

IEEE 802.3

RTTE Directive


All Spectra provided Cisco Routers and Switches are put through a rigorous refurbishment, reconditioning and testing process.

We guarantee our products to be:

  • Original equipment manufactured and serial numbered numbered by Cisco
  • Configured to exact user specifications
  • Fully refurbished to manufacturers standards of new [ETN]
  • All hard drives are 72 hour burn in/Load Tested
  • Complete with manufacturers ship group
  • Provided with 90 day warranty
  • Shipped in a timely manner

Shipping Information and Payment Options

Shipping options:

All of our products are professionally packed and fully insured to avoid any damage in transit.

Spectra offers several shipping options to accommodate every need:
From Ground to Overnite to palletized freight, we have excellent vendors that will handle your shipment in a professional, cost-effective and timely manner.

Payment Options:

Spectra accepts bank wire, ACH, company check, & paypal.
We welcome ALL major credit cards with no surcharge to our customers.