user manual

ND-20292
CHAPTER 2
APRIL, 1990
Transmit
Receive
/
1 mON
2 aON
3 =ON
4 DON
5 mON
6 mON
7 =ON
8 mON
All switches OFF =
Odb
Switch 1 ON = -2db
Switch 2 ON = -4db
Switch 3 ON = -8db
Switch4ON= -12db
All 4 Switches ON=
-16db
Switch 5 ON =
-2db
Switch 6 ON=
-4db
Switch 7 ON= -8db
Switch 8 ON = -12db
All 4 switches ON= -16db
Figure 200-22 SW102, or SW202 pad switch settings
on TLI-EB ETU
SW102 (switches 5 - 8) sets the reception loss level for
Channel 1.
SW202 (switches 1 - 4) sets the transmission loss level
for Channel 2.
SW202 (switches 5 - 8) sets the reception loss level for
Channel 2.
NOTE: Transmission and reception loss levels are
also programmable for each E&M Tie Line;
it is recommended to set switches 1-8,0nboth
SW102 and SW202, to the OFF position.
LEDs 1 and 2 (Red) indicate the status of the two
associated circuits.
Each LED ON indicates its associated circuit is in use.
LED 3 (Green) lit, indicates the TLI-EB ETU is
receiving power.
A maximum of twenty TLI-EB ETUs can be installed
in a system into any interface slots.
E. ESI-EA/EB ETU
Installing an ESI-EA ETU or ESI-EB ETU provides
support for up to four Multiline Terminals and/or EDE-
30-( ) units. (Refer to Figure 200-23). The ESI-EB
ETU is required when a Multiline Terminal is
equipped with the DPA-E Unit for the dual path
feature, or a DTA-E Unit for data capability.
LED LPl (Green) lit, indicates the ESI-E( 1 is
receiving power, LEDs 1- 4 (Red) indicate the status of
the four associated circuits. Each LED ON indicates
its associated circuit is in use.
NOTE:
It is recommended that only the ESI-EA
ETU be installed in the fourth CCU, for the
support of Multiline Terminals, as thefourth
cabinet cannot support the Data and Dual
Path features of the ESI-EB ETU.
Figure 200-23
ESI-E( ) ETU Busy Switch with LEDs
A maximum of twenty ESI-E( 1 ETUs can be installed
in a system into any interface slot.
F. SLI-EA/EIB ETU
Installing an SLI-EA or SLI-EB ETU provides support
for up to four single line telephones, modems or
DkrmIIs. The SLI-EB ETU is required when power
failure transfer of .CO lines and/or message wait
signaling to single line telephones and/or voice mail
messaging is used in the system.
LED1 (Green) lit, indicates that the SLI-E( 1 ETU is
receiving power. LEDs 101-401 (Red) indicate the
status of the four circuits. Each LED ON indicates its
associated circuit is in use.
A maximum of nineteen SLI-E( ) ETUs can be
installed in a system into any interface slot. SLI-E( 1
ETUs require the support of at least one RSG-E Unit
and an MFR-EA ETU. (Refer to Tables 200-2 and
200-3)
G. MFR-EA ETU
The MFR-EA ETU contains a switch and an LED.
When inserting or removing an MFR-EA with power
applied to the CCU, Switch1 (SW11 must be set to the
OFF position.
LED1 (Green) lit indicates that the MFR-EA ETU is
receiving power.
A maximum of four MFR-EA ETUs can be installed in
a system into anv interface slot to provide a maximum
of 8 circuits. The MFR-EA ETU is required to support
the dialing of any SLTs, modems and/or VMI-E ETU
installed.