315 DPSI - System Port | Service Name:dpsi

315 is a System Port. Transport Protocol TCP UDP , 315 Service Name dpsi, Service Name Description: DPSI.

Port	Protocol	Service Name	Description	Source
315	TCP UDP	dpsi	DPSI	IANA
315	TCP		The Invasor	emsisoft
315	TCP UDP	dpsi	DPSI	bekkoame

Port	Service Name	Description
772	cycleserv2
1825	direcpc-video	DirecPC Video
1904	fjicl-tep-c	Fujitsu ICL Terminal Emulator Program C
3782	iso-tp0s	Secure ISO TP0 port
3805	tcpdataserver	ThorGuard Server Port
3843	quest-agent	Quest Common Agent
4451	ctisystemmsg	CTI System Msg
4941	eq-office-4941	Equitrac Office
7681		Unassigned
8015		Unassigned

A port is an endpoint of communication in an operating system. While the term is also used for hardware devices, in software it is a logical construct that identifies a specific process or a type of service.

Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535);

The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users. Ports are used in the TCP [RFC793] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port". To the extent possible, these same port assignments are used with the UDP [RFC768]. The range for well-known ports managed by the IANA is 0-1023.
DYNAMIC AND/OR PRIVATE PORTS Registered Ports are those from 1024 through 49151.
The Dynamic and/or Private Ports are those from 49152 through 65535