The HP SNA Access Server for Microsoft Windows is a layered software
product that works with the Microsoft Host Integration Server.
The Access Server has two components that are implemented as Microsoft
- APPC service, which supports HP's OpenVMS SNA LU6.2 applications
- Basic service, which supports HP's layered SNA applications
that are not LU6.2 based, such as 3270 terminal emulation or print
Those two services provide the means for HP's OpenVMS SNA applications to use a Microsoft Host Integration Server
for connectivity to IBM SNA-based systems.