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Features - IBM 2702 Information Manual

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FEATURES
2702 Features
The following features provide expanded capability
for the IBM 2702 in terms of line speed, number of
lines, and other functions.
Speed Extension Feature. Enables the 2702 to oper-
ate at speeds up to 600 bps on all 15 lines.
31- Line Expansion Feature. Expands the line handl-
ing capabilities of the 2702 to 31 half-duplex lines at
134.5 bps. The 31-Line Expansion feature and the
Speed Extension feature are mutually exclusive--that
is, either feature may be selected, but not both.
Auto Call Feature. Provides the 2702 with automatic
dialing capability of up to S communications-line
attachments.
Auto Call Expansion Feature.
Expands the automatic
dialing capability of the 2702 up to 16 communications-
line attachments.
The Auto Call feature is a prere-
quisite.
Auto Call Adapter Feature. Matches the interface of
the common-carrier Automatic Dialing Unit; the Auto
Call feature is a prerequisite. The Auto Call Adapter
provides for attachment of the 2702 to private or
common-carrier switched networks, via Western
Electric Automatic Calling Unit SOlA1 or SOlC2. A
maximum of 16 Auto Call Adapters can be chosen
for one 2702 when the Auto Call ExpanSion feature
is installed. One adapter is required for each auto
call line. The Auto Call feature is a prerequisite.
Two-Processor Switch Feature.
Enables the 2702 to
be physically attached to the multiplexer channels of
two System/360 processors. The 2702 must be in a
neutral state for the switching to occur. When in
this neutral state, the 2702 monitors both multiplexer
interfaces and automatically switches and locks to the
first channel addressing any line of the 2702. The
attached processor can return the switch to neutral
under program control or through a manual reset.
Data Set Line Adapter. Allows attachment to the fol-
lowing:
a. IBM 2711 Line Adapter.
b. Western Electric Data Set 103A* for operation
at 134.5 bps on Common Carrier Switched
Telephone or 150 baud TWX networks.
*Or equivalent (see Chapter 3) .
c. Western Electric Data Set 103F2* for operation
at 134.5 bps on Telephone Company Type
3002 Private Line Service.
d. Suitable channel termination for operation on
Telephone Company Type 1006 (150 baud)
Channels.
e. Western Union Data Loop Transceiver 11S3A*
on Western Union Class D (ISO baud) Channels.
f. Western Electric Data Set (202Dl* for operation
on Telephone Company Type 3002 Channels or
Western Union Class G channels for 600 bps
operation.
IBM Line Adapter.
Two types are available:
a. Limited-Distance Line Adapter Type I--Allows
attachment to privately owned or leased com-
munication networks of 4. 75 wire miles or less
length. With this feature, a data set is not
needed. Up to 25 adapters can be mounted in
the 2702 unit; additional adapters require the
use of an IBM 2711 Line Adapter Unit.
b. Limited-Distance Line Adapter Type II--Allows
attachment to privately owned or leased com-
munication networks of S wire miles or less
length. With this feature, a data set is not
needed. A maximum of 15 adapters (16 with
the 3l-Line Expansion feature) can be attached.
IBM Terminal Control Type
1.
Enables the 2702 to
operate with the IBM 1050, 1060, and 1070 systems
or the IBM 2740 and 2741 terminals.
Three speeds
are available:
75 bps
134.5 bps
600 bps
Connection
IBM 1050 on telegraph lines
IBM 1050, 1060, 1070, 2740 Mod 1, or
2741
IBM 1070, 2740 Mod 2
IBM Terminal Control Type II.
Enables the 2702 to
operate with the IBM 1030 Data Collection System
(1031A Input Station and 1033 Printer) or the IBM
1032 Digital Time Unit at a speed of 600 bps.
Telegraph Line Adapter. Allows attachment to Com-
mon Carrier Leased Private Line Telegraph Service.
Channels that can be attached are Telephone Company
Type 1002 at 45.5 or 56.9 bps, Type 1005 at 74.2
bps, and Western Union Class A, B, and C Channels
at 45.5, 56.9, and 74.2 bps, respectively. A maxi-
mum of 15 lines is allowed; with 31-Line Expansion
feature, 31 are allowed.
Introduction
1-3

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