A maximum of nineteen SLI-EA ETUs can be installed
~
; per system.
.z’ 20. SLI-EB ETU
The SLI-EB ETU is a Single Line Telephone Interface
Unit which includes the functions of the SLI-EA ETU
and provides Message Wuiting indication to SLTs
equipped with a Message Wuiting lamp.
Each SLI-EB ETU contains four identical circuits to
serve up to four SLTs.
The SLI-EB ETU is required for use with power failure
transfer of COs to SLTs.
A maximum of nineteen SLI-EB ETUs can be installed
per system.
21. MFR-EA ETU
The MFR-EA ETU is a Dual Tone Multi-Frequency
Receiver Unit that is used to receive and translate the
DTMF signals generated by the SLTs or Voice Mail
System.
Each MFR-EA ETU provides two receiver circuits
shared by SLTs in a system. When no SLTs or VMI-E
ETUs are installed in a system, MFR-EA ETUs are not
:. required.
A maximum of four MFR-EA ETUs can be installed
per system.
22. CNF-E ETU
The CNF-E ETU is the Conference Unit that is used to
establish a non-amplified Conference between a
maximum of four parties, both outside lines and
extensions. No more than two outside lines can
participate in a Conference call.
A CNF-E ETU is required for each Conference in
progress.
A maximum of four CNF-E ETUs can be installed per
system.
23. ECR-E ETU
The ECR-E ETU is the External Control Relay Unit
that provides control circuits to access one or all three
External Paging Zones. If the locally provided
amplifier is a both way amplifier, two way paging is
a’vailable. The ECR-E ETU also provides circuitry for
External Ringing applications and Night Chime
control in the night mode.
The ECR-E ETU also contains input jacks. The first
jack is an input for a Music source for Background
Music via the built in speaker of the Multiline
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CHAPTER 1
APRIL, 1990
Terminals. The second jack is for an alternative music
source or as the playback input for a Delay
Announcement unit when used with UCD. The ECR-E
ETU also provides an output jack for continuous ring
tone.
A maximum of one ECR-E ETU can be installed per
system.
24. VMI-E ETU
The Voice Mail Interface has four circuits used to
interface between the Electra Mark11 Digital
Telephone System and a locally provided Voice Mail
system. The VMI-E generates DTMF for control of the
Voice Mail equipment and provides it with access to
MFR-EA ETUs. The system requires an RSG-E Unit
to support the VMI-E ETU. Single Line Telephones,
DTMF controlled dictation equipment, or a modem can
be connected to any unused ports of the VMI-E ETU.
A CPU-EB (or higher revision level) ETU is required
to support the connection of an SLT, modem, or DTMF
controlled dictation equipment to the VMI-E ETU.
A maximum of two VMI-E ETUs (which allows for 8
ports for Voice Mail) may be installed if a CPU-EC4 (or
higher revision level) is installed. Otherwise, only one
VMI-E ETU can be installed.
26. SMDR-E ETU
The SMDR-E ETU (Station Message Detail Recording
Unit) provides the user with detailed call reports on
the usage of the system. Detailed call reports include
number dialed, time of initiated/received call, trunk
number, trunk group, type of call (outgoing, incoming,
transferred, conferenced), station number, length of
call, date, account code (if entered), and LCR status. A
printer or other peripheral device must be connected to
the RS232C connector from the SMDR-E ETU. The
call buffer is protected against power loss by a battery.
Data output speed range is from 300 to 4800 baud and
is set by a switch mounted on the SMDR-E ETU.
A maximum of one SMDR-E ETU can be installed per
system.
26. LCR-ETU
The LCR-E ETU is the Least Cost Routing Unit that
provides the user with the least costly available route
when placing outside calls.
The LCR programmed data base is protected against
power loss by a battery. Data output speed range is
from 150 to 9600 baud and is set by a switch mounted
on the LCR-E ETU.
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