Chapter 3. Definition of Address Specification Format

Addresses are specified in the following syntax,

protocol/host:port

where protocol specifies a protocol family or an alias for a protocol family. A definition of common protocol families is given in a later section.

The host part specifies the name of a host or other transport dependent entity that could be interpreted as a Network Service Access Point (NSAP).

The port part specifies the name of a Transport Service Access Point (TSAP). The format of the TSAP is defined by the underlying transport implementation, but it is represented using a string format when it is part of an address.