Source note · Webex Calling ICE media path optimization
Cisco states that Webex Calling devices sharing a public address through NAT or PAT may use the same SIP signalling source port within the 5060 to 5280 range, that the NAT device must be able to translate overlapping source ports to unique translated ports, and that strict source-port preservation configurations can cause device registration failures.
Checked 2026-09-16
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- network
- Deployment
- not restricted
- Region
- not restricted
- Release range
- not restricted
- Checked
- 2026-09-16
Sources
- Port Reference Information for Webex Calling — Cisco Systems, Inc. (help.webex.com) · tier 2 current vendor documentation · Firewall configuration, NAT pool sizing paragraph
Cite this note
APA
WarmTransfer. (2026, September 16). Webex Calling ICE media path optimization: source note wxice-nat-must-translate-overlapping-source-ports. WarmTransfer. https://warmtransfer.net/knowledge/claims/wxice-nat-must-translate-overlapping-source-ports
BibTeX
@misc{warmtransfer-claim-wxice-nat-must-translate-overlapping-source-ports,
title = {Webex Calling ICE media path optimization: source note wxice-nat-must-translate-overlapping-source-ports},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/wxice-nat-must-translate-overlapping-source-ports},
note = {Source note wxice-nat-must-translate-overlapping-source-ports, checked 2026-09-16}
}