RoadRunner
U S E R S G U I D E
13
<Maint><Dig I/F><Type><
type
>
where
type
can be either
X.21, X.21XTA
or
RS422.
Select
RS422
when connecting the
RoadRunner
to any RS422 network
interface. When connecting to any X.21, RS449 or RS530 interface, select
X.
21XTA
if the external network interface device recognizes a change-
of-state of the DTR/CON line. This enables the
RoadRunner
to
terminate the connection when you press the
END
button. Otherwise,
select
X.21
as the interface type.
V.35 Using the DIF102 Digital Interface
Each interface defines a voltage level for each of the signals. In the case
of V.35 and X.21, a connector type is defined as well. The large,
rectangular block connector defined in the V.35 specification is not used
by the
RoadRunner
because of its size. Instead, a smaller DB15
connector is used. In the case of the V.35 interface, the
RoadRunner
conforms to the electrical specification but requires an adapter cable to
convert the DB15 connector to the connector specified in the V.35
specification. The connector and the pin-out chosen for the V.35
interface in the
RoadRunner
are a common deviant found in many
systems. An adapter cable is available from MUSICAM USA or
distributors, or can be made following the diagram found in Appendix
B. It is important to remember that V.35 has a separate clock for
transmitted and received data.
Once the DIF102 module is installed, select the appropriate interface
type from the
RoadRunner
menu:
<Maint><Dig I/F><Type><
type
>
where
type
can be either
V.35
or
V.35XTA.
When connecting to any V.35 interface, select V.
35XTA
if the external
network interface device recognizes a change-of-state of the DTR/CON
line. This enables the
RoadRunner
to terminate the connection when
you press the
END
button. Otherwise, select
V.35
as the interface type.
ISDN Using the TA101 Terminal Adapter
The TA101 Terminal Adapter plugs directly into the
RoadRunner
and
provides an ‘S/T’ interface to ISDN. The S/T interface requires an NT-
