Source note · Troubleshooting Webex Contact Center outdial
RFC 3261 section 21 defines the SIP final response codes commonly seen on rejected calls, including 403 Forbidden (21.4.4), 404 Not Found (21.4.5), 480 Temporarily Unavailable (21.4.18), 486 Busy Here (21.4.24), 503 Service Unavailable (21.5.4) and 603 Decline (21.6.2).
Checked 2026-09-30
- Vendor
- IETF
- Product
- SIP
- Subsystem
- Response codes
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3261
- Checked
- 2026-09-30
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · section 21 (21.4.4, 21.4.5, 21.4.18, 21.4.24, 21.5.4, 21.6.2)
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting Webex Contact Center outdial: source note wxcc-outdial-troubleshooting-rfc3261-codes. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxcc-outdial-troubleshooting-rfc3261-codes
BibTeX
@misc{warmtransfer-claim-wxcc-outdial-troubleshooting-rfc3261-codes,
title = {Troubleshooting Webex Contact Center outdial: source note wxcc-outdial-troubleshooting-rfc3261-codes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxcc-outdial-troubleshooting-rfc3261-codes},
note = {Source note wxcc-outdial-troubleshooting-rfc3261-codes, checked 2026-09-30}
}