5 – Remote Control ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 5-7
Intraplex Products
5.1.2 DS0 Management Communications
You can remotely access Intraplex network access products using the internal DS0 management
communications capability. DS0 management communications enable the multiplexer (using its
common module) to pass management commands to the CM-5RB module connected at the far end of
the T1 line, communicating over an adjustable payload bandwidth in a DS0 time slot of the T1 line.
DS0 management communications allow access to multiple Intraplex multiplexers from a single
gateway point.
You must properly configure the COMM (DS0 communications) group on the CM-5RB module for DS0
management communications. You can access the COMM group through the common module basic
configuration menu. Section 4.2.2 – Display and Change Items in Basic Configuration Group gives
detailed explanations on displaying and editing functions in the CM-5RB basic menu. Table 5-3 shows
descriptions of the COMM group settings.
Table 5-3. DS0 Management Communication Settings: Abridged Basic Configuration Menu
COMM DS0 management communications parameters
CNFG DS0 configuration
OFF* Turn DS0 communications off
MSTR Set the multiplexer to master mode
SLV Set the multiplexer to slave mode
BRDG Set the multiplexer to bridge mode
RATE DS0 data rate
8 KB Set the data rate to 8 Kbps (1 bit/DS0)
16 KB Set the data rate to 16 Kbps (2 bits/DS0)
32 KB* Set the data rate to 32 Kbps (4 bits/DS0)
64 KB Set the data rate to 64 Kbps (8 bits/DS0)
TSLT Set the time slot used for DS0 communications to and from the DS0 interface
1 to 24* T1 setting
* Indicates factory default.
These control settings must be made on each CM-5RB basic menu COMM group for successful
communication on a DS0 network:
● Set the common module to master, slave, or bridge mode (default: off).
● Select a data rate of 8, 16, 32, or 64 kbps (default: 32 kbps).
● Select a DS0 communications time slot (default: Time Slot 24 for T1).
CM-5RB modules in a redundant configuration (primary and backup) must have the same data rate
and DS0 time slot in the COMM menu group. The remote port setup for the redundant CM-5RB
modules (primary and backup) must also match. A backup CM-5RB module is not addressable by the
network until it becomes active.
5.1.2.1 Common Module DS0 Configuration
A network must have a single master (primary) station that controls all the communications and one
or more slave (secondary) stations. Only one slave can be transmitting at any time, therefore the
master controls all slave transmissions. The bridge mode is used during maintenance, allowing
network communications to remain functional by completing a DS0 loop while a personal computer
can be directly connected to the bridged CM-5RB module for Intraplex Simple Command Language
(ISiCL) commands.
Warning! A bridged CM-5RB module cannot communicate in a network (Figure 5-4).
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