Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL Electronics Inc.
April 2005
IMUX 2000 T1/E1 MDACS
2
Key Features and Benefits
• Substation Hardened
The IMUX 2000 T1/E1 MDACS is designed for harsh environ-
ments and has a wide temperature range of -20°C to +65°C.
It meets the IEEE/ANSI st
andards C.37.90-1989, C.37.90.1
and C.37.90.2 for SWC, fast transient and EMI.
• Reliability
The IMUX 2000 T1/E1 MDACS provides enhanced reliabil-
ity by offering optional redundant power supplies.
• Speed
The IMUX 2000 T1/E1 MDACS is designed to handle time
sensitive applications such as Protective Relaying. The
Drop-and-Insert through-channel delay is less than 25 mi-
croseconds. The IMUX 2000
T1/E1 MDACS has an aver-
age reframe time of less than 25 milliseconds.
• DS0 Squelching
The IMUX 2000 T1/E1 MDACS has the ability to squelch
(turn off) the output of a channel module in the Multiplexer
upon loss of synchronization. This feature provides secu-
rity against false tripping on 4-wire analog transfer trip chan-
nels and older digit
al equipment (with limited error check-
ing) during loss of sync and protects against ‘pink’ noise
conditions, which result from cross-talk or the frame search.
This feature is ideal for preventing false tripping due to sys-
tem malfunction.
• CSU Functionality
The IMUX 2000 T1/E1 MDACS offers a built in CSU func-
tionality that meets applicable standards for protection in-
cluding FCC Part 68 approval for direct connection into the
Public Switched
Telephone Network (PSTN). When en-
abled, the unit will respond to generated loopback codes
compliant to either ANSI T1.403 or AT&T TR 54016. It will
also maintain and allow local and remote retrieval of perfor-
mance measurements in accordance with either ANSI
T1.403 or AT&T TR 54016.
• Modular Design
The IMUX 2000 T1/E1 MDACS incorporates a midplane
motherboard design. Channel modules plug into the front
of the unit, and matching module adapter for I/O connec-
tions plug into the rear.
This eliminates the need for internal
chassis wiring when adding new channel cards, simplifying
the upgrade.
• Automation
The IMUX 2000 T1/E1 MDACS offers the ultimate Network
Management system which operates in a Windows
TM
point-
and-click environment. The optional SNMP based manage-
ment reporting software can be used when integrated as
part of a larger enterprise system. Network visibility is
available from any node which allows remote provisioning,
monitoring and alarm reporting. Intuitive graphical user in-
terface with color coded DACS maps.
• Fiber Optic or Electric Interfaces
The IMUX 2000 T1/E1 MDACS can be equipped with either
electrical
T1/E1 interfaces or Optical Interface Adapters (OIA
’s).
The electrical T1 interface is equipped with Line Build-Out
(LBO) networks for operation of up to 6,000 feet from the DSX.
The OIA’s are available in a wide range of multimode,
singlemode, LED or laser combinations to accommodate
1300nm and 1550nm wavelengths.
• Channel Interfaces
A wide range of interfaces unique to the utility and the trans-
portation market is offered. It also of
fers a wide range of
Voice and Data, Status, Telemetry, Ethernet, Transfer Trip
and Video channel interfaces to meet most communica-
tions requirements.
• Fast Restoration
When applied to diverse communication routes, such as
Ring or Hot-Standby networks, the IMUX 2000
T1/E1
MDACS is capable of switch times programmable down to
1 millisecond.
• Diverse Networks
The IMUX 2000 T1/E1 MDACS supports many types of net-
work layout
s such as Linear, S
purs, Hot-Standby and Ring
topologies. It is also designed for operation over SONET/SDH
networks taking into consideration the critical time-delay is-
sues associated with Protective Relaying.
• SONET and SDH Applications
Protective Relaying can finally be applied over non-propri-
etary SONET/SDH equipment. With emphasis placed on
rapid break healing, the IMUX 2000
T1/E1 MDACS ad-
dresses the critical time issues associated with Protective
Relaying making it the ideal and Intelligent choice when
interfacing to SONET/SDH networks.
The IMUX 2000 T1/
E1 MDACS bridges the gap between SONET/SDH and
substations providing DS0 gateways onto the network. Also,
through its own switching techniques, can overcome the
longer switch times and unequal channel delay issues as-
sociated with SONET/SDH.
• Digital Access Cross-Connect Switch
Functionality provides full cross-connect capability as well
as a reliable level of system restoration. The IMUX 2000
T1/E1 MDACS enables the termination of up to four [4]
T1/E1 ports while also providing full DS0
Time Slot Inter-
change capability. System restoration is accomplished
through the use of alternate DS0, Time Slot Interchanged
maps. The alternate maps are predetermined and pre-pro-
grammed through our user friendly Network Management
Software. An alternate DS0 map is invoked automatically
upon detection of T1/E1 failures (e.g. AIS, Loss of Frame,
excessive BER). The time necessary to switch to an alter-
nate map, upon detection of failure, is programmable down
to 1 millisecond.
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