NetRunner WAN User’s Manual
Introduction
1-10
Options
Module
Description
Voice/Fax Module
These modules offer the ability to send voice or
fax communications digitally across the link and
are available to meet the requirements of most
countries.
The Digital Direct Series of modules provide a
high-speed digital interface to a PBX and wide
area network (WAN). It is designed for the
NetRunner 500ET, 2000E and 2000ED. Up to 24
channels are supported.
CEM (Channel Expansion
Module
)
12-Channel CEMs:
D
A 12-channel async CEM with 8-pin
connectors which are RS-232 (V.24)
compatible.
D
A 12-channel async CEM with 8-pin
connectors and integral line drivers which
are RS-422/423 compatible.
6-Channel CEMs:
D
A 6-channel sync/async CEM with female
DB-25 connectors which are RS-232 (V.24)
compatible.
D
A 6-channel sync/async CEM with DMA.
This module will support additional
interconnect links. Connectors are female
DB-25, RS-232 compatible. Only for
NetRunner 1000E and 2000E,ED.
D
A 6-channel async CEM with female DB-25
connectors which are RS-232 (V.24)
compatible.
ISU Module
The Integrated Service Unit (ISU) combines a
Channel Service Unit (CSU) and a Data Service
Unit (DSU) to connect to the Digital Data System
(DDS) network. This provides a synchronous line
at a speed of 56,000 bps. This module is
available as a single or dual channel ISU. The
dual channel ISU is available for models
NR2000E, NR2000ED, NR1000E, and NR500ET.
NMS Module
The NMS module provides two ports: the
dedicated command port for access to the
Command Facility, and the log port for hard-copy
output of reports. An external alarm device can
be connected for audible or visual alarm
notification. (For NetRunner 2000E, 2000ED, and
500ET, module must be Rev. D or later.) This
module is not offered for the NetRunner 75E.