Ports used by 3CX Phone System

Please note that this article refers to version 14 and older. For any version above please go here.

The following is a complete list of ports that 3CX Phone System uses in a default installation scenario:

Protocol Port (Default) Description Port Forwarding Required
TCP 5000 or 80 v14: This port can be configured when Webserver is Abyss. On IIS it is fixed to 80
v12.5:
This port can be configured by the administrator.
v12: The port used for the 3CX Management Console, Presence Updates for 3CX Phone V12 (and 3CX MyPhone V11), the 3CX Hotel Module, 3CX Web Reports, 3CX Wallboard – whether using Abyss or IIS.
Yes – if you intend to make this available from outside your LAN
TCP 5001 or 443 v14: This port can be configured when Webserver is Abyss. On IIS it is fixed to 443
v12.5:
This port can be configured by the administrator.
v12 (Optional): The port used for the 3CX Management Console, Presence Updates for 3CX Phone V12, the 3CX Hotel Module, 3CX Web Reports, 3CX Wallboard – whether using Abyss or IIS.
Yes – if you intend to use 3CX Phone from outside your LAN
UDP & TCP 5060 3CX Phone System (SIP) Yes – if you intend to use VoIP Providers, WebRTC and Remote Extensions that are NOT using the 3CX Tunnel Protocol
TCP 5061 3CX Phone System (SecureSIP) TLS Yes – if you intend to use SecureSIP remote extensions
UDP & TCP 5090 3CX Tunnel Protocol Service Listener Yes -if you intend to use remote extensions using the 3CX Tunnel Protocol (within 3CX Phone for Windows / Android / iPhone) or when using the 3CX Session Border Controller
UDP 9000-9255 (default) 3CX Media Server (RTP) – WAN audio/video/t38 streams Yes – if you intend to use remote extensions or VoIP Provider
UDP 9256-9500 (default) External media transmission for 3CX WebRTC Yes – if you intend to the inbound call function via WebRTC
TCP 4516 V12.5 Port used for Data communication for Wallboard Yes – if you intend to make the Wallboard functionality available from outside your LAN

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