19
CHAPTER 4: Installation
4.2.2 C
ONNECTING THE
IDSL L
INE
D
RIVER
V.35
TO A
DCE D
EVICE
The Line Driver (ME0002A-V35) provides a V.35 DCE (Data Circuit Terminating
Equipment) interface on an M/34 female connector. As a DCE, this interface is
designed to connect to DTE equipment, such as a router. However, tail-circuit
applications require connection to another piece of DCE equipment, such as a
multiplexor. When connecting the V.35 interface of the Line Driver to your DCE
device, use a V.35 null-modem cable. Some applications may also require the
installation of a V.35 tail-circuit buffer to account for small differences in clock
frequency between the Line Driver and the V.35 DCE (multiplexor).
Figure 4-4. Connecting the Line Driver to a V.35 serial DCE.
4.3 Connecting the IDSL Line Driver X.21 Serial Interface
The Line Driver (ME0002A-X21) supports X.21 serial port connections. This
section describes how to connect the serial ports to your X.21 equipment.
4.3.1 C
ONNECTING THE
IDSL L
INE
D
RIVER
X.21
TO A
DCE
OR
DTE D
EVICE
The Line Driver provides an X.21 interface on a DB15 female connector. The X.21
interface default configuration is DCE (Data Circuit Terminating Equipment) for
connection to DTE (Data Terminal Equipment) such as a router. However, the
X.21 interface on the Line Driver may be configured as DTE (Data Terminal
Equipment) for connection to DCE such as a modem or multiplexor. When
connecting the X.21 interface of the Line Driver to your DTE device, use a X.21
straight-through cable (see Figure 4-5).
IDSL Line Driver
(ME0002A-V35)
IDSL Line Driver
(ME0002A-V35)
DSL span
V.35 multiplexor (DCE)
