Source note · SIP scanning and telephony denial of service
CUBE call spike detection watches the call arrival rate over a moving window and rejects calls above the configured threshold, which Cisco says protects against INVITE-based DoS attacks.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (CUBE)
- Subsystem
- Call Admission Control - call spike
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Cisco IOS XE 17.6 onwards
- Checked
- 2026-09-25
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Call Admission Control — Cisco Systems · tier 2 current vendor documentation · Call Admission Control > Configure CAC Based on Call Spike Detection
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-cube-call-spike-purpose. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-cube-call-spike-purpose
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-cube-call-spike-purpose,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-cube-call-spike-purpose},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-cube-call-spike-purpose},
note = {Source note sip-scanning-tdos-cube-call-spike-purpose, checked 2026-09-25}
}