Specifications
2.2.2 Synchronous Serial Controllers
Synchronous serial controllers provide high-speed connections between
systems. Communication between synchronous devices depends on time
intervals
that
are
synchronized before
transmission
of
data
begins.
2.2.2.1
DSV11
Synchronous Interface
The
DSVll
provides two high-speed synchronous connections to DECnet,
SNA,
and
X.25 networks.
Functional
Information
Supported line interface
Supported protocols
Operating mode
Character
size
Modem support
Supported modems
EIA RS-232-C/CCITT
Y.28
EIA RS-423-AlCCITT
Y.10
X.26
EIA RS-422-AlCCITT
y.n
X.27
CCITT Y.24,
Y.35,
Y.36,
and
Y.21
SDLCIHDLC
DDCMP
BISYNC
Full
and
half
duplex
Program selectable
(5-8
bits with character-
oriented protocols
and
108 bits with bit-oriented
protocols)
Full
All DIGITAL modems
and
the
Bell 200 series
Option Specifications
2-33