Product Code

C2921-VSEC/K9

Bundle

Cisco 2921 Voice Sec. Bundle, PVDM3-32, UC and SEC License PAK

Rack Units

2U

Interfaces

3 integrated 10/100/1000 Ethernet ports (RJ-45 only)

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

RAM

512 MB (installed) / 2 GB (max)

Flash Memory

256 MB (installed) / 8 GB (max)

Dimensions

47 cm x 43.8 cm x 8.9 cm

①

AC OK

④

Optional RPS adapter(blank panel shown)

②

On/Off switch

⑤

LEDs area

③

AC power connector

①

Compact flash 0 and 1 (0, right)

⑦

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

②

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

⑧

10/100/1000 Ethernet port GE 0/0

③

USB serial port

⑨

Ground

④

RJ-45 serial console port

⑩

USB 0 and 1 (1, top)

⑤

AUX port

⑪

Service module slots

⑥

SFP

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

Models

Description

SM-ES3G-16-P

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

SM-ES3G-24-P

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

HWIC-2T

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

EHWIC-1GE-SFP-CU

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

EHWIC-4ESG

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

ISM-SRE-300-K9

Internal Services Module (ISM) with Services Ready Engine

PVDM3-16

16-channel high-density voice DSP module

MEM-CF-256U1GB

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

MEM-CF-256U2GB

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

MEM-CF-256U512MB

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

MEM-CF-256U4GB

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

MEMUSB-1024FT

1GB USB Flash Token

Model

CISCO2921/K9

C2921-VSEC/K9

Bundle

N/A

Voice Security Bundle

Interface

3GE

3GE

EHWIC slot

4

4

SIM Slot

1

1

SFP

1

1

Memory

512MB (installed) / 2 GB (max)

512MB (installed) / 2 GB (max)

Flash Memory

256MB (installed) / 8 GB (max)

256MB (installed) / 8 GB (max)

Rack Unit

2 U

2 U