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QoS Requirements and Recommendations for Call Signaling

11/01/2011 By Andrew Roderos Leave a Comment

Key QoS requirements and recommendations for call signaling traffic:

  • Call signaling traffic should be marked as DSCP CS3 per the QoS Baseline (it can also be marked with the legacy value of DSCP AF31).
  • 150 bps (plus Layer 2 overhead) per phone of guaranteed bandwidth is required for voice control traffic; more may be required, depending on the call signaling protocol.

References

Cisco QoS Exam Certification Guide (IP Telephony Self-Study) (2nd Edition)
End-to-End QoS Network Design: Quality of Service in LANs, WANs, and VPNs

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Filed Under: QoS Tagged With: Cisco, IOS

About Andrew Roderos

I am a network security engineer with a passion for networking and security. Follow me on Twitter, LinkedIn, and Instagram.

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