The Five9 SIP proxy uses UDP 5080 for SIP signaling and TCP 5081 for SIP over TLS, both outbound from the customer network.
Checked 2026-10-02
- Vendor
- Five9
- Product
- Five9 Virtual Contact Center
- Subsystem
- network ports
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- TCP/UDP Port Requirements for Softphone Customers — Five9 · tier 2 current vendor documentation · TCP/UDP Port Requirements for Softphone Customers; rows 5080 and 5081
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting Five9 softphone and station connection problems: source note five9-softphone-troubleshooting-sip-proxy-5080-5081. WarmTransfer. https://warmtransfer.net/knowledge/claims/five9-softphone-troubleshooting-sip-proxy-5080-5081
BibTeX
@misc{warmtransfer-claim-five9-softphone-troubleshooting-sip-proxy-5080-5081,
title = {Troubleshooting Five9 softphone and station connection problems: source note five9-softphone-troubleshooting-sip-proxy-5080-5081},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/five9-softphone-troubleshooting-sip-proxy-5080-5081},
note = {Source note five9-softphone-troubleshooting-sip-proxy-5080-5081, checked 2026-10-02}
}