CISCO ISR4321-VSEC/K9

The Cisco ISR4321-VSEC/K9 is a specialized Integrated Services Router (ISR) designed for small to medium-sized businesses (SMBs) and branch offices that require advanced voice security and unified communications capabilities. It builds upon the base features of the ISR4321 with added functionalities tailored for voice applications.  

Here’s a breakdown of its key features and what makes it stand out:

Core Features (shared with ISR4321-SEC/K9):

• Performance: Offers a default throughput of 50 Mbps, upgradable to 100 Mbps with a performance license.  
• Connectivity:
  • 2 Gigabit Ethernet WAN/LAN ports
  • 1 SFP port for fiber optic connections  
• Security:
  • Integrated security features: Firewall, VPN, and intrusion prevention system (IPS)
  • Advanced security capabilities: Cisco TrustSec
• Expandability:
  • 2 Network Interface Module (NIM) slots  
  • 1 Integrated Service Card (ISC) slot  
• Management:
  • Cisco IOS XE software  
  • Management through web interface, CLI, or SNMP

Voice-Specific Features (differentiating it from ISR4321-SEC/K9):

• Unified Communications: This bundle includes a Unified Communications (UC) license, enabling advanced voice features.
• CUBE (Cisco Unified Border Element): Comes with CUBE-10, which provides session border control functionalities for connecting VoIP networks. This is crucial for secure and reliable voice communication over IP networks.  
• Enhanced Voice Security: Offers advanced voice security features like:
  • Media encryption of voice RTP streams using SRTP
  • Exchange of RTCP information using secure RTCP
  • Support for AES-128 encryption algorithm
  • Secure calls in Cisco Unified SRST mode during WAN failover

Benefits:

• Secure and reliable voice communication: Designed specifically for businesses that prioritize secure and high-quality voice services.
• Unified communications platform: Provides a comprehensive platform for integrating voice, video, and data services.
• Enhanced security for voice traffic: Offers advanced security features to protect voice communications from threats.
• Cost-effective solution: Combines routing, security, and voice functionalities in a single device, reducing hardware costs.

Use Cases:

• SMBs with VoIP requirements: Ideal for SMBs that rely heavily on VoIP and need a secure and reliable platform for their voice communications.
• Branch offices with unified communications needs: Suitable for branch offices that require integrated voice, video, and data services.
• Businesses requiring session border control: The included CUBE-10 makes it suitable for businesses that need session border control functionalities for their VoIP networks.