Exchange/RJE Manual

Configuring Data Communications Lines
Installation and Configuration
6–2 104698 Tandem Computers Incorporated
Configuring Data
Communications Lines
This section outlines the configuration requirements for Envoy and CP6100 data
communications lines.
Envoy Lines For information about the hardware and system generation definitions required when
using Exchange/RJE with Envoy data communications lines, see the System Generation
Manual.
When configuring an Envoy line for Exchange/RJE, you need to specify the following
values. This is not a complete list; it only includes those parameters for which
Exchange/RJE requires a specific value.
Peripherals Paragraph Macro Name
ACU
specifies the Automatic Call Unit protocol required for Exchange/RJE ACU lines.
BISYNC
specifies the Binary Synchronous Communications (BSC, also called
bisynchronous) protocol required for Exchange/RJE data communications lines.
Peripherals Paragraph Modifiers
TYPE SUBTYPE
70 BSC, point-to-point, nonswitched line
1 BSC, point-to-point, switched line
56 ACU line
The byte synchronous interface modifiers define additional characteristics of an
Exchange/RJE Envoy data communications line. You need to specify the following
link control values:
ACKOFF
specifies the bisynchronous ACK compare sequences ACK 0/1, DLE-EOT, and
WACK. Required for Exchange/RJE; it is the default value for the BISYNC macro.
ASCII or EBCDIC
controls whether the BSC control characters are in ASCII (the default value) or
EBCDIC.
The selection of ASCII or EBCDIC defines the line as either an ASCII line or an
EBCDIC line. However, this selection does not restrict the character codes of the
data transmitted over the line. For example, you can transmit ASCII data over an
EBCDIC line. This selection does determine which code is used for the BSC line-
control characters, which in turn determines the codes the hardware recognizes as
line-control characters. This selection must agree with the line code used on the
remote system.