Source note · Troubleshooting calls that drop on hold or transfer
Under the SDP offer/answer model, a stream that was sendrecv is placed on hold by sending a new offer that marks it a=sendonly.
Checked 2026-09-30
- Vendor
- IETF
- Product
- SIP
- Subsystem
- sdp-offer-answer
- Deployment
- any
- Region
- not restricted
- Release range
- RFC as published
- Checked
- 2026-09-30
Sources
- RFC 3264 — An Offer/Answer Model with the Session Description Protocol (SDP) — IETF / RFC Editor · tier 1 standards and regulators · Section 8.4 (Putting a Unicast Media Stream on Hold)
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting calls that drop on hold or transfer: source note sip-reinvite-call-drops-hold-sendonly. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-reinvite-call-drops-hold-sendonly
BibTeX
@misc{warmtransfer-claim-sip-reinvite-call-drops-hold-sendonly,
title = {Troubleshooting calls that drop on hold or transfer: source note sip-reinvite-call-drops-hold-sendonly},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-reinvite-call-drops-hold-sendonly},
note = {Source note sip-reinvite-call-drops-hold-sendonly, checked 2026-09-30}
}