Source note · SIP registration failures
The Webex Calling port reference asks administrators to set a minimum NAT timeout for devices, noting that Cisco phones send a follow-up REGISTER refresh every 1-2 minutes.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- network
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Port Reference Information for Webex Calling — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · section 'Network Address Translation (NAT)'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP registration failures: source note sip-registration-failures-wxc-nat-timeout. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-registration-failures-wxc-nat-timeout
BibTeX
@misc{warmtransfer-claim-sip-registration-failures-wxc-nat-timeout,
title = {SIP registration failures: source note sip-registration-failures-wxc-nat-timeout},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-registration-failures-wxc-nat-timeout},
note = {Source note sip-registration-failures-wxc-nat-timeout, checked 2026-09-25}
}