Port 323

Modified by:

Port 323 is commonly used for the Integrated Services Digital Network (ISDN) protocol. ISDN is a telecommunications protocol used to transmit voice, video, and data over digital telephone lines. Port 323 is responsible for handling signaling between ISDN devices.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port Protocol (TCP/UDP) Title Description Port Type

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
Port 323 IMMP, Internet Message Mapping Protocol
TCP UDP Ports
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