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The 3174 Model 23R is a rack-mounted remote controller that supports
the IBM Cabling System interface for IBM Token-Ring Network attachment.
The Model 23R supports up to sixty-four 3270 devices and twenty-four ASCII
devices. A Type 1 Teleprocessing Communication Adapter with a customer-selected
communications cable for Alternate IML backup capability or remote Token-ring
gateway support is provided.
Terminal Attachment
The 3174 Establishment Controllers offer a wide variety of terminal attachments.
They can be configured to connect terminals directly, via 3299 Terminal
Multiplexers, via optional Terminal Multiplexer Adapters (#3103) and via
optional Telephone Twisted Pair Terminal Multiplexer Adapters (#3105),
or by a combination of these attachments.
The 3174 has an integrated four-port terminal adapter which permits up
to four terminals to be directly attached, or by using one of the following,
up to a maximum of 32 terminals can be attached:
- One to four 3299 Terminal Multiplexers
- One to four Terminal Multiplexer Adapter optional features (#3103)
- Any combination of up to four 3299 Terminal Multiplexers and Terminal
Multiplexer Adapter optional features.
- One Telephone Twisted Pair Terminal Multiplexer Adapter (#3105)
- Attachment to the IBM Token-Ring Network.
- Attachment to Ethernet DIX Version 2 and IEEE 802.3 LAN Networks.
- Supports up to 250 Down Stream PUs (DSPUs) T2.0 when configured as
a Gateway or supports up to 32 ISDN only connected PU T2.0s when configured
as an ISDN Gateway.
- An optional Type 1 and Type 2 Concurrent Communication Adapter allowing
additional IBM host connection(s) with Configuration Support-B or Configuration
Support-C.
- Single Link Multihost Support in Configuration Support-B or C, allowing
a 3174 via its primary communication interface (TRN, X.25, or ESCON
(SNA only)) to connect to multiple IBM hosts.
- An Asynchronous Emulation Adapter feature that provides: 3270 terminal
emulation for ASCII terminals for communication to IBM hosts, ASCII
terminal emulation for communication between select 3270 devices or
IBM PCs operating in CUT mode and ASCII hosts.
- Host-to-3174 communication link speeds up to 64K bps.
- Cabling to devices via direct attachment to IBM Cabling System media.
(Type 1, 2 and 3) No Balum cable assembly required.
NOTE: When ordering this controller a Communication cable must be specified:
V.24 or V.35.
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