Source note · SD-WAN considerations for voice
RFC 4594 recommends that the Telephony service class use the Expedited Forwarding (EF) PHB with priority queuing and no active queue management.
Checked 2026-09-24
- Vendor
- IETF
- Product
- DiffServ
- Subsystem
- service classes
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 4594
- Checked
- 2026-09-24
Sources
- RFC 4594: Configuration Guidelines for DiffServ Service Classes — IETF / RFC Editor · tier 1 standards and regulators · Section 4.1; Figure 4 Telephony row
Cite this note
APA
WarmTransfer. (2026, September 24). SD-WAN considerations for voice: source note sdwan-voice-rfc4594-telephony-ef. WarmTransfer. https://warmtransfer.net/knowledge/claims/sdwan-voice-rfc4594-telephony-ef
BibTeX
@misc{warmtransfer-claim-sdwan-voice-rfc4594-telephony-ef,
title = {SD-WAN considerations for voice: source note sdwan-voice-rfc4594-telephony-ef},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sdwan-voice-rfc4594-telephony-ef},
note = {Source note sdwan-voice-rfc4594-telephony-ef, checked 2026-09-24}
}