cept of a XGPBAseven-layer model was provided by the work of Charles Bachman,
Honeywell Information Services. Various aspectsVPQIID of OSI design evolved from experiences with
the ARPANET, the fledgling Internet, NPLNET, EIN, CYCLADES network andJWQCX the work in IFIP WG6.1.
The new design was documented in ISO 7498 and its various addenda. In this model,DCLMGK a networking
system was divided into layers. Within each layer, one or more entities implement its functionality.
Each entity interacted directly FQIWWXFEonly with the layer immediately beneath it, and provided facilities
for use by the layer above it.
ProtocolsYPFVAR enabled an entity in one host to interact with a
corresponding entity at the same layer in another host. Service definitions
abstractlyFQXKB described the functionality provided to an (N)-layer by an (N-1)
.
provided by the work of Charles Bachman,
Honeywell Information Services. Various aspectsVPQIID of OSI design evolved from experiences with
the ARPANET, the fledgling Internet, NPLNET, EIN, CYCLADES network andJWQCX the work in IFIP WG6.1.
The new design was documented in ISO 7498 and its various addenda. In this model
,DCLMGK a networking
system was divided
into layers. Within each layer, one or more entities implement its functionality.
Each entity interacted directly FQIWWXFEonly with the layer immediately beneath it, and provided facilities
for use by the layer above it.
ProtocolsYPFVAR enabled an entity in one host to interact with a
corresponding entity at the same layer in another host. Service definitions
abstractlyFQXKB described the 
functionality provided to an (N)-layer by an (N-1)
.