WarmTransfer
network foundations · stub

Firewall ports and IP ranges for cloud calling

Verified 2026-09-04 · 2 claims · sources tier 2

Stub. This topic has 2 verified claims and no published article. The claims below are exactly what the corpus holds today.

So far, no summary has been generated for this topic. The claims below are what the corpus currently holds.

See also

Referenced by

Claims

#ClaimStatusConfidenceVerified
1A certificate-based Local Gateway must be directly reachable from the internet at a public IPv4 address, using 1-to-one static NAT if the gateway itself holds a private address.
Configure trunks, route groups, and dial plans for Webex Calling · Network and certificate requirements
fact0.902026-09-04
2Registration-based Local Gateway signalling is established outbound only from the enterprise to Webex Calling over SIP with TLS, so no inbound firewall rule is required.
Cisco Preferred Architecture for Webex Calling — Design Overview · Registration-based Local Gateway, pages 22-23
fact0.902026-09-04

Sources

tier 2 current vendor documentation

Cisco Preferred Architecture for Webex Calling — Design Overview

Cisco Systems, Inc. (CTG TME) · 2025-08 · accessed 2026-09-04

tier 2 current vendor documentation

Configure trunks, route groups, and dial plans for Webex Calling

Cisco Systems, Inc. (Webex Help Center) · 2026-04-28 · accessed 2026-09-04

Cite this page

APA

WarmTransfer. (2026, September 4). Firewall ports and IP ranges for cloud calling. WarmTransfer. https://warmtransfer.net/knowledge/firewall-ports-uc

BibTeX

@misc{warmtransfer-firewall-ports-uc,
  title  = {Firewall ports and IP ranges for cloud calling},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/firewall-ports-uc},
  note   = {Verified 2026-09-04}
}