Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
2.3.3 T1 COMMON MODULES
The T1 Common Module (CM4) is a microprocessor-controlled module that performs all of the T1
multiplexing and demultiplexing functions. It also provides the user interface through the RS-232
remote port on the MA-235 and may optionally provide other functions, such as an additional timing
source. Each M-DACS multiplexer contains two CM4 Common Modules.
The CM4 is the standard T1 Common Module for the IMUX 2000 M-DACS. It provides the following
operational functions:
CM4 Operational Functions See Paragraph
1. T1 line receiver (input). 2.3.3.1
2. T1 line driver (output). 2.3.3.2
3. Demultiplexing of the T1 aggregate to individual channels. 2.3.3.3
4. Multiplexing of channels to form T1 aggregate. 2.3.3.4
5. Multiplexer/demultiplexer bus interface to channels. 2.3.3.5
6. Transmit timing functions. 2.3.3.6
7. Loopback configurations. 2.3.3.7
8. Microprocessor control 2.3.3.8
9. User interface. 2.3.3.9
10. Sequence of events 2.3.3.10
11. Time and Date Settings 2.3.3.11
12. Download function 2.3.3.12
13. Network Management Communications (NMS) Section 5
M-DACS-T1 RFL Electronics Inc.
October 16, 2012 2-27 (973) 334-3100
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