Source note · Early media and ringback behavior

Because Webex Contact Center does not support SIP early media, a deployment should not expect in-band ringback or announcements from Webex Contact Center before answer; any ringback a caller hears before answer would have to come from local generation upstream (gateway, SBC or carrier).

inferred · 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
Status: inferred
Checked: 2026-09-24

Sources

Set up voice channels for Webex Contact Center — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · SIP interoperability guidelines (Early Media: Not Supported), read with RFC 3960 Section 3.2

Cite this note

APA

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

BibTeX

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

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