Source note · Troubleshooting calls that drop on hold or transfer
In passthru media-change mode, re-INVITEs are not consumed when media flow-around or media anti-tromboning is configured, and SDP passthrough, video transcoding and multicast music on hold are unsupported.
Checked 2026-09-30
- Vendor
- Cisco
- Product
- Cisco Unified Border Element
- Subsystem
- midcall-signaling
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Cisco IOS XE 17.6 onwards
- Checked
- 2026-09-30
Sources
- Cisco Unified Border Element Configuration Guide - Cisco IOS XE 17.6 Onwards - Mid-call Signaling — Cisco Systems · tier 2 current vendor documentation · Restrictions for Mid-call Signaling Passthrough - Media Change
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting calls that drop on hold or transfer: source note sip-reinvite-call-drops-cube-passthru-not-consumed. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-reinvite-call-drops-cube-passthru-not-consumed
BibTeX
@misc{warmtransfer-claim-sip-reinvite-call-drops-cube-passthru-not-consumed,
title = {Troubleshooting calls that drop on hold or transfer: source note sip-reinvite-call-drops-cube-passthru-not-consumed},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-reinvite-call-drops-cube-passthru-not-consumed},
note = {Source note sip-reinvite-call-drops-cube-passthru-not-consumed, checked 2026-09-30}
}