Datacomm - HP 262SA Reference Manual

3276/78 Emulation Mode
You may attach your terminal to a System/360 or a System/370 through an IBM 2701 Data
Adapter Unit, an IBM 2703 Transmission Control Unit, an Integrated Communication Adap-
ter, or an IBM 3704 or 3705 Communications Controller. Other supported hosts include the
Systeml3, Systeml303X, the 3790, or any other mainframe that executes IBM operating
systems and VTAM, BTAM, or TCAM access methods and is capable of supporting 3276
Control Units.
NOTE:
As the 8100 Information System requires SDLC protocol, the HP 2625A offers no
support for this host.
DATACOMM
The HP 2625A supports Binary Synchronous Communications (BSC) over duplex or half-
duplex facilities. Such communications only use the Multipoint Data Link mode of operation.
Communications are handled by system hardware and software. The following statements
apply:
• Transmission occurs over a non-switched (private leased) line.
• The line protocol is multipoint (non-contention) Binary Synchronous Communications
(BSC).
• The HP 2625A only supports the EBCDIC (Extended Binary Coded Decimal Interchange
Code) code structure.
• Connection to the line is made through a modem or a modem bypass cable. Modems at the
terminal end and host computer end must be compatible and properly strapped.
• The HP 2625A can function on a communication line with IBM 3270 Display System
terminals. However, you cannot mix the two within one modem drop line. For example,
only HP 2625A's can be daisy-chained together. It is not possible to connect an IBM 3278
Display Station to an HP 2625A.
• It is not possible to use the HP 2625A for a local channel IBM mainframe attachment.
If you are unfamiliar with Binary Synchronous Communications, you should consult the
following IBM manuals for necessary details:
• General Information-Binary Synchronous Communications
• Introduction to the IBM 3704 and 3705 Communications Controllers
• IBM 2703 Transmission Control Component Description
• IBM 2701 Data Adapter Unit Component Description
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