Source note · QoS marking and queuing for voice
Zoom's documented default audio marking of 56 is the CS7 codepoint, which RFC 4594 reserves and recommends dropping or re-marking at ingress. On a network that follows RFC 4594, Zoom audio left at the default is therefore likely to be re-marked or dropped rather than placed in an EF priority queue.
inferred · Checked 2026-09-24
- Vendor
- Zoom
- Product
- Zoom desktop app
- Subsystem
- trust boundary
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Status
- inferred
- Checked
- 2026-09-24
Sources
- Using QoS DSCP Marking — Zoom (Zoom Support) · tier 2 current vendor documentation · Default values list; read against RFC 4594 Section 3.1
Cite this note
APA
WarmTransfer. (2026, September 24). QoS marking and queuing for voice: source note qos-marking-zoom-56-is-cs7-inference. WarmTransfer. https://warmtransfer.net/knowledge/claims/qos-marking-zoom-56-is-cs7-inference
BibTeX
@misc{warmtransfer-claim-qos-marking-zoom-56-is-cs7-inference,
title = {QoS marking and queuing for voice: source note qos-marking-zoom-56-is-cs7-inference},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/qos-marking-zoom-56-is-cs7-inference},
note = {Source note qos-marking-zoom-56-is-cs7-inference, checked 2026-09-24}
}