Source note · Setting up third-party SIP phones on Webex Calling
In Cisco's Poly and Yealink example, both the Outbound Proxy and Server 1 entries on a customer-managed device are set to Port 0 and Transport TLS.
Checked 2026-09-30
For both Outbound Proxy and Server 1, set Port to 0 and Transport to TLS.
- Vendor
- Cisco
- Product
- Webex Calling
- Subsystem
- outbound proxy
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Add your customer managed device — Cisco · tier 2 current vendor documentation · device provisioning notes following the field-mapping table
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up third-party SIP phones on Webex Calling: source note webex-calling-third-party-phone-setup-cm-port-transport. WarmTransfer. https://warmtransfer.net/knowledge/claims/webex-calling-third-party-phone-setup-cm-port-transport
BibTeX
@misc{warmtransfer-claim-webex-calling-third-party-phone-setup-cm-port-transport,
title = {Setting up third-party SIP phones on Webex Calling: source note webex-calling-third-party-phone-setup-cm-port-transport},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/webex-calling-third-party-phone-setup-cm-port-transport},
note = {Source note webex-calling-third-party-phone-setup-cm-port-transport, checked 2026-09-30}
}