Source note · Early media and ringback behavior

Webex Contact Center's SIP interoperability guidelines list SIP Early Offer as Not Supported, marked as a future roadmap item.

Checked 2026-09-24

Vendor: Cisco
Product: Webex Contact Center
Subsystem: voice channel PSTN SIP interop
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-24
Checked: 2026-09-24

Sources

Set up voice channels for Webex Contact Center — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Set up voice channels for Webex Contact Center > SIP interoperability guidelines

Cite this note

APA

WarmTransfer. (2026, September 24). Early media and ringback behavior: source note early-media-ringback-wxcc-no-early-offer. WarmTransfer. https://warmtransfer.net/knowledge/claims/early-media-ringback-wxcc-no-early-offer

BibTeX

@misc{warmtransfer-claim-early-media-ringback-wxcc-no-early-offer,
  title  = {Early media and ringback behavior: source note early-media-ringback-wxcc-no-early-offer},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/early-media-ringback-wxcc-no-early-offer},
  note   = {Source note early-media-ringback-wxcc-no-early-offer, checked 2026-09-24}
}

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