• SonicOS 7.0 VoIP
• Overview
  • About SonicOS
  • SonicOS Workflow
  • How to Use the SonicOS Administration Guides
  • Guide Conventions
• VoIP
  • VoIP Security
    • Security Appliance Requirements for VoIP
  • VoIP Protocols
    • H.323
    • SIP
  • SonicWall’s VoIP Capabilities
    • VoIP Security
    • VoIP Network
    • VoIP Network Interoperability
    • Supported Interfaces
    • Supported VoIP Protocols
      • H.323
      • SIP
      • SonicWall VoIP Vendor Interoperability
      • CODECs
      • VoIP Protocols on which SonicOS Does Not Perform Deep Packet Inspection
    • BWM and QoS
      • Quality of Service
    • How SonicOS Handles VoIP Calls
      • Incoming Calls
      • Local Calls
  • Settings
    • Configuring VoIP Settings
      • General Settings
      • SIP Settings
        • Enabling SIP
      • H.323 Settings
        • Configuring Bandwidth on the WAN Interface
        • Configuring VoIP Access Rules
    • Configuring VoIP Logging
• Call Status
• SonicWall Support
  • About This Document

Quality of Service

QoS encompasses a number of methods intended to provide predictable network behavior and performance. Network predictability is vital to VoIP and other mission critical applications. No amount of bandwidth can provide this sort of predictability, because any amount of bandwidth is ultimately used to its capacity at some point in a network. Only QoS, when configured and implemented correctly, can properly manage traffic, and guarantee the desired levels of network service.

SonicOS includes QoS features that adds the ability to recognize, map, modify and generate the industry-standard 802.1p and Differentiated Services Code Points (DSCP) Class of Service (CoS) designators.