Source note · Early media and ringback behavior

The Cisco IOS command disable-early-media 180 (sip-ua or voice class tenant mode) makes the gateway ignore SDP in a 180 response and play local ringback; the no form restores early media cut-through.

Checked 2026-09-24

Vendor: Cisco
Product: Cisco IOS
Subsystem: SIP provisional response handling
Deployment: on-premises
Region: not restricted
Release range: 12.2(13)T onwards
Checked: 2026-09-24

Sources

Cisco IOS Voice Command Reference - D through I: disable-early-media through dualtone — Cisco Systems · tier 2 current vendor documentation · disable-early-media 180 command entry: Command Modes and Usage Guidelines

Cite this note

APA

WarmTransfer. (2026, September 24). Early media and ringback behavior: source note early-media-ringback-cube-disable-cmd. WarmTransfer. https://warmtransfer.net/knowledge/claims/early-media-ringback-cube-disable-cmd

BibTeX

@misc{warmtransfer-claim-early-media-ringback-cube-disable-cmd,
  title  = {Early media and ringback behavior: source note early-media-ringback-cube-disable-cmd},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/early-media-ringback-cube-disable-cmd},
  note   = {Source note early-media-ringback-cube-disable-cmd, checked 2026-09-24}
}

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