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Model: C2951-VSEC/K9 Cisco Router ISR G2 Voice Security Bundle
Detail: Cisco 2951 Voice Sec. Bundle, PVDM3-32, UC and SEC License P
List Price: US$9,595.00
Price: $4,604.00
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Overview (C2951-VSEC/K9)

C2951-VSEC/K9 is the Cisco Router ISR G2 with Voice Security Bundle. Its appearance is similar with CISCO2951/K9, but it’s bundled with Voice Sec. Bundle, PVDM3-16, UC and SEC License PAK.

Quick Specs

Table 1 shows the Quick Specs of the C2951-VSEC/K9.

Product Code



Cisco 2951 Voice Sec. Bundle, PVDM3-32, UC and SEC License PAK

Rack Units



3 integrated 10/100/1000 Ethernet ports with 1 port capable of RJ-45 or SFP connectivity

Expansion Slot(s)

2 service module slot

1 Internal Service Module slot

3 onboard digital signal processor slots

4 Enhanced high-speed WAN interface card (EHWIC) slots


512 MB (installed) / 2 GB (max) - DDR2 SDDRAM Memory

Flash Memory

256 MB (installed) / 8 GB (max)


47 cm x 43.8 cm x 8.9 cm

Product Details

Figure 1 shows the front panel of CISCO2951/K9. C2951-VSEC/K9 is similar with it.

cisco2951 front panel



Optional RPS adapter(blank panel shown)

On/Off switch

LEDs area

AC power connector

Figure 2 show the expansion slots and ports on the back panel.

cisco2951 back panel


Compact flash 0 and 1 (0, right)

10/100/1000 Ethernet port (GE 0/1 and GE 0/2)

EHWIC 0,1,2 and 3 (0, far right)

10/100/1000 Ethernet port GE 0/0

USB serial port


RJ-45 serial console port

USB 0 and 1 (1, top)

AUX port

Service module slots


Table 2. Voice Security Bundle Features Table

Authentication and
Encryption Features

  • Media encryption of voice RTP streams using SRTP
  • Exchange of RTP Control Protocol (RTCP) information using secure RTCP
  • SRTP to RTP fallback for calls between secure and insecure endpoints
  • Secure calls supported in Cisco Unified Survivable Remote Site Telephony (SRST) mode during WAN failover
  • Compressed RTP (CRTP) supported with media encrypted calls using SRTP

Authentication and
Encryption Algorithm

  • Supports AES-128 encryption algorithm
  • Supports the HMAC secure hash authentication algorithm (SHA 1)

Signaling Authentication and Encryption Features

  • Gateway to Cisco Unified Communications Manager signaling and encryption uses IPSec for Media Gateway Control Protocol (MGCP), H.323 and SIP gateways
  • IP phone to Cisco Unified Survivable Remote Site Telephony router signaling and encryption uses TLS 
     (Transport Layer Security)

Protocol Support

  • MGCP 0.1 (supports MGCP gateways with Cisco Unified Communications Manager)
  • H.323 (supported on H.323 gateways and CUBE; Cisco Unified Communications Manager interoperability is optional)
  • Session Initiation Protocol (SIP)
  • SCCP (Cisco Unified IP Phone) in SRST mode

Module Support

  • Any module that has PVDM2, PVDM3 and/or built-in DSP

Codec Support

  • G.711, G.729A, and G.729

Modularity Features

Table 3 shows some recommended modules for this router.




Enhanced EtherSwitch Service Module, L2/L3 switching, 16* 10/100/1000 GE ports, Enhanced POE, Cisco EnergyWise technology


Enhanced EtherSwitch Service Module, L2/L3 switching, 24 * 10/100/1000 GE ports, Enhanced POE, Cisco EnergyWise technology


2-Port Serial WAN Interface Card Cisco Router High-Speed WAN Interface card


Cisco 1900, 2900, 3900 Router EHWIC WAN Card EHWIC-1GE-SFP-CU


Four port 10/100/1000 Base-TX Gigabit Ethernet switch interface card for Cisco 1900 2900 3900 Routers


Internal Services Module (ISM) with Services Ready Engine


256MB to 1GB Compact Flash Upgrade for Cisco 1900,2900,3900


256MB to 2GB Compact Flash Upgrade for Cisco 1900,2900,3900


256MB to 512MB CF Upgrade for Cisco 1900,2900,3900 ISR


256MB to 4GB Compact Flash Upgrade for Cisco 1900,2900,3900


1GB USB Flash Token

Compare to Similar Routers

Table 4 shows the comparison between CISCO2951/K9 and C2951-VSEC/K9.






Voice Security Bundle




EHWIC slot



SIM Slot







512MB (installed) / 2 GB (max)

512MB (installed) / 2 GB (max)

Flash Memory

512MB (installed) / 8 GB (max)

512MB (installed) / 8 GB (max)

Rack Unit

2 U

2 U

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Do you have any question about the C2951-VSEC/K9 router?

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Specification (C2951-VSEC/K9)

C2951-VSEC/K9 Specifications


Cisco Systems, Inc

Manufacturer Part Number



Cisco 2951 Voice Sec. Bundle, PVDM3-32, UC and SEC License PAK

Product Type


Form Factor

External - modular - 2U

Dimensions (WxDxH)

47 cm x 43.8 cm x 8.9 cm


13.2 kg

DRAM Memory

512 MB (installed) / 2 GB (max) - DDR2 SDDRAM Memory

Flash Memory

256 MB (installed) / 8 GB (max)

Routing Protocol

OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing

Data Link Protocol

Ethernet, Fast Ethernet, Gigabit Ethernet

Network / Transport Protocol


Remote Management Protocol


Digital Ports Qty



Firewall protection, VPN support, MPLS support, Syslog support, content filtering, IPv6 support, Class-Based Weighted Fair Queuing (CBWFQ), Weighted Random Early Detection (WRED), Dynamic Multipoint VPN (DMVPN)

Compliant Standards

IEEE 802.1ah, IEEE 802.1ag


AC 120/230 V ( 50/60 Hz )


Faq (C2951-VSEC/K9)

Does it support multicore processor?

Yes, all Cisco 2900 series model support multicore processor.

Does CISCO2951-VSEC/K9 have integrated SFP slots?

Yes, Cisco 2921 and 2951 have one integrated SFP slots.

Does CISCO2951-VSEC/K9 support USB console?

Yes, all Cisco 2900 series model support USB console.

Does it support Multigigabit fabric?

Yes, multigigabit fabric is supported in all Cisco 2900 series routers.

Can I must purchase the PVDM to get the voice function?

Yes. Cisco 2900 series need to installed PVDM and related license to get the voice function.

What version of USB do the onboard ports support?

All USB interfaces on the new integrated services routers support USB 2.0, including both the USB host ports used for USB flash memory and USB eTokens as well as the new USB console interface.

What is the second Compact Flash slot on the Cisco ISR G2 used for?

In response to heavy customer demand, these new routers include a second Compact Flash slot. Both slots are functionally equivalent and both can hold Cisco IOS Software images, log files, voice configuration files, HTML files, backup configurations, or any other file needed for the system. By default, only slot 0 is populated with a Compact Flash device from the factory, and it is the default boot location. Without a boot system statement in the configuration, the system will attempt to boot the first file on the Compact Flash in slot 0.

Do the combination RJ-45 + SFP front-panel Gigabit Ethernet ports support failover?

Yes. You can configure autofailover on any front-panel ports with both RJ-45 and SFP connections. When autofailover is configured, if the primary interface type fails - either RJ-45 or SFP - then the other media type becomes active and allows traffic to continue over the backup physical connection. In this scenario, the backup physical connection needs to be connected with the same speed and duplex as the primary connection.

What is the Cisco Services Performance Engine (SPE)?

The Cisco Services Performance Engine is the modular motherboard for the Cisco 3900 Series routers primarily responsible for the processing and forwarding of traffic. Similar to today's Cisco 3845 motherboard, the SPE houses the PVDM slots, ISM slot, and the 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. This form of investment protection helps ensure that routers deployed today will be upgradable for years to come with the latest innovations without the need for complete platform replacement.

What power-supply options are available on the C2951-VSEC/K9 router?

The table shows the available power supplies for the C2951-VSEC/K9.

AC option


AC + PoE option


DC option11


Redundant power supply



Shipping & Payment


Cargo will be delivered within 1 day after payment arrived. Tracking Number will be offered once delivery done.

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By Sea 10-20 business days


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