Host Mainframe Access
ICA
Using ICA emulation, the IBM S/390 Integrated Server can be VTAM
peer-connected to a host system using SDLC to share host applications.An
ISA Wide Area Connector (WAC) is required in the IBM S/390 Integrated
Server and up to six ICA lines are supported.
XCA
Using XCA emulation, communication lines appear to VTAM as Lan adapters.
Current versions of VTAM on VM/ESA, VSE/ESA, and OS/390 ESA support
XCA. A Multiport Model 2 or ISA Wide Area Connector (WAC) is required in the
IBM S/390 Integrated Server and up to sixteen XCA lines are supported.
LAN3172/LCS3172
Using a local and remote LAN attachment with LAN3172 emulation, the IBM
S/390 Integrated Server can be VTAM peer-to-peer connected to a host system
(37x5, 3172, 3174 or ICA) to share host applications.Using a bridge or router
between the local and remote LANs allows the systems to appear to be
LAN-attached.
Using a local or remote LAN attachment with LCS3172 emulation, the IBM
S/390 Integrated Server can be TCP/IP peer-to-peer connected to a host
system (37x5, ICA, 3172) to share host applications.The TCP/IP connection is
for OS/390, VM/ESA, and VSE/ESA.
ESCON Serial Channel adapter
Only ESCON channel functions are supported. ESCON to Parallel converter
and CTC function is not supported, however a S/390 Serial Channel adapter
can connect to another S/390 system where the CTC “load” is in that system's
channel.
CommunicationControllers
To get communication function there are several alternatives:
Channel-attached S/390 communication controllers (2703, 3720, 3745) using a
S/390 Parallel Channel adapter or S/390 Serial Channel adapter
Emulated XCA devices by using an ISA WAC or Multiport Model 2 adapter for
SDLC
Emulated XCA device by using a boundary node converter for SDLC and BSC
for speeds up to 56 Kbps
Emulated ICA devices using a wide area connector (ISA WAC) for SDLC or
BSC line interface using RS232, V.35, or X.21
The number of lines possible for each device, whether emulated or channel
attached differ and depends on how the device is configured.If you need greater
than six lines, please contact your Business Partner for configuration assistance.
26 S/390 Integrated Server
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