2637 Import Document Service - User Port

2637 is a User Port. Transport Protocol TCP UDP , 2637 Service Name imdocsvc, Service Name Description: Import Document Service.

Port	Protocol	Service Name	Description	Source
2637	TCP UDP	imdocsvc	Import Document Service	IANA
2637	TCP UDP	imdocsvc	Import Document Service	bekkoame

Port	Service Name	Description
1345	vpjp	VPJP
1643	isis-ambc	isis-ambc
2012	ttyinfo
2290	sonus-logging	Sonus Logging Services
2427	mgcp-gateway	Media Gateway Control Protocol Gateway
2888	spcsdlobby	SPCSDLOBBY
3389	ms-wbt-server	MS WBT Server
3618	aairnet-1	AAIR-Network 1
5017		Unassigned
5623		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