When the SIP OPTIONS response shows a server error or Service Unavailable, the documented fix is to check that the Local Gateway is not in maintenance mode and that call routing is not disabled.

Checked 2026-09-25

Vendor
Cisco
Product
Webex Calling
Subsystem
SIP OPTIONS keepalive
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-server-error. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-server-error

BibTeX

@misc{warmtransfer-claim-webex-local-gateway-troubleshooting-err-server-error,
  title  = {Troubleshooting a Webex Calling Local Gateway: source note webex-local-gateway-troubleshooting-err-server-error},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/webex-local-gateway-troubleshooting-err-server-error},
  note   = {Source note webex-local-gateway-troubleshooting-err-server-error, checked 2026-09-25}
}

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