Source note · SIP scanning and telephony denial of service
RFC 7339 (Standards Track, September 2014) defines SIP overload control, in which a server uses the Via parameters oc, oc-algo, oc-validity and oc-seq to tell upstream clients to cut traffic, with loss-based control as the default algorithm.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SIP
- Subsystem
- Overload control
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 7339
- Checked
- 2026-09-25
Sources
- RFC 7339: Session Initiation Protocol (SIP) Overload Control — IETF / RFC Editor · tier 1 standards and regulators · Sections 4, 5 and 7
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-rfc7339-overload-control. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-rfc7339-overload-control
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-rfc7339-overload-control,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-rfc7339-overload-control},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-rfc7339-overload-control},
note = {Source note sip-scanning-tdos-rfc7339-overload-control, checked 2026-09-25}
}