Source note · Troubleshooting SIP 403 Forbidden from a carrier
Cisco's Local Gateway configuration article for Webex Calling describes a diagnostic signature for registration-based Local Gateways that polls SNMP every 10 minutes to detect abnormal call disconnects with SIP errors 403, 488 and 503.
Checked 2026-09-30
This DS uses SNMP polling every 10 minutes to detect abnormal call disconnect with SIP errors 403, 488 and 503.
- Vendor
- Cisco
- Product
- Webex Calling Local Gateway (IOS XE)
- Subsystem
- diagnostic signatures
- Deployment
- multi-tenant, on-premises-gateway
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Configure Local Gateway on Cisco IOS XE for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Monitor and troubleshoot Registration based Local Gateway with diagnostic signatures
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-cisco-lgw-ds. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-cisco-lgw-ds
BibTeX
@misc{warmtransfer-claim-sip-403-forbidden-troubleshooting-cisco-lgw-ds,
title = {Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-cisco-lgw-ds},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-cisco-lgw-ds},
note = {Source note sip-403-forbidden-troubleshooting-cisco-lgw-ds, checked 2026-09-30}
}