GTE Omni Si Database Technical Practices Issue 1 Manual

							TL-I 30500-l 001

						

							TL-130500-1001
CLASS OF SERVlCE DISPLAYS. Indicates the displayable class
of service (0 through 
15) and the n-displayable class of service
(00-15) of the incoming call when a LOOP pushbutton is
depressed to answer an incoming call from a station or Tie line.
In a no-answer situation, the class of service display of the
called station appears after the LOOP pushbutton is depressed.
CONF (CONFERENCE). Allows addition of stations, trunks, or
the attendant to the first conference circuit. LED indicates the
status of either conference circuit.
DEST RLS (DESTINATION RELEASE). Allows release of a
called station or trunk if a dialing error is made or a busy signal
is received.
DISPLAY FIELD. Displays two 
16-character fields (fixed right:
variable left). A four-digit display of the trunk or line identity
appears in the left portion of the display-characters field. When
the LOOP pushbutton is depressed to answer a call from a
station or a Tie line, this four-digit display gives the number of
the calling station or calling trunk. The number of the called
station in camp-on, busy, and no-answer situations is
displayed when the LOOP pushbutton is depressed. A display of
predetermined messages that appear in the fixed portion (right) of
the display characters field (i.e., INFORMATION, FX, NO
ANSWER, etc.).
NOTE: The left 
16 characters display variable data: line data,
class-of-service data, etc. The right 16 characters display
fixed, predetermined messages and input from the keypad.
DON’T 
DIST (DO-NOT-DISTURB). Allows blockage of all calls
to a station when requested. This pushbutton is reserved for the
Hotel/Health Care feature package.
ELECTRONIC RINGER VOLUME CONTROL. Is a slide bar
located on the right rear of the Attendant Console and used only
to increase/decrease the ringer volume.
EXCL DEST (EXCLUDE DESTINATION). Allows private
consultation with the called party after the call is completed. The
pushbutton can also be used to control the three-way
connection between the called station, the attendant, and the
outside calling party.
EXCL SRCE (EXCLUDE SOURCE). Allows private consultation
with the calling party. This pushbutton can also be used to
control the three-way connection between the called station, the
attendant, and the outside calling party.
FUSE HOLDER AND FUSE. Is a circuit protection device
located on the left rear of the Attendant Console.
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							SVR 5210-TL-130500-1001
HOLD. Used to place a call in a waiting condition (on hold) until
the attendant can return to the call.
INFORMATION. Indicates that a station desires assistance of
the attendant and has dialed 0. The associated LOOP LED
flashes at 30 IPM. Once the loop button is pressed, the LCD
displays the instrument number and COS of the caller.
NOTE: When the attendant recall-on-hold has timed out, the
original display flashes at 60 IPM. The associated LOOP LED
winks at 60 IPM.
LOCAL. Indicates an incoming CO call. The associated LOOP
LED flashes at 120 IPM. Once the loop button is pressed, the
LCD displays the trunk type and number of the incoming call.
LOOP 1 through LOOP 4 
LEDs. Indicate status of the loops.
MESG WTG (MESSAGE WAITING). Allows the user to cause a
telephone-associated LED to flash an indication to a station that
a message is waiting. This pushbutton generally is used with a
feature enhancement.
NITE ANSW (NIGHT ANSWER). Activates the night answer
mode level (entered as a single digit on the keypad) of operation,
or marks the Attendant Console as being unstaffed. The level of
night answer mode is displayed on the type of call display. If the
night answer pushbutton is depressed when the LED is on, the
night answer mode is returned to the day mode.
ON/OFF TOGGLE SWITCH. Located at the left rear and used to
turn the Attendant Console on or off. When the Attendant
Console does not respond properly, the power can be turned off
and on again to reinitialize the attendant console.
PAGE. Allows direct access to the paging system as long as the
pushbutton is depressed.
PAGE Q (PAGE QUEUE). Allows placement of an incoming call
in a page-queue hold condition.
RLS (Release) Pushbutton 
- This pushbutton allows the user to
release from a call on an active line. The RLS LED lights
steadily during a line 1 call or when the LINE 2 pushbutton is
depressed. The RLS LED is extinguished when the RLS
pushbutton is depressed.
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							--TL-130500-1001
REQUEST FOR INITIALIZATION LED. Flashes when the
Attendant Console is initialized, and goes off when initilization
sequence completes.
ROOM 
BLKG (ROOM BLOCKING). Allows blockage of incoming
calls to all stations and diverts these calls to 
120 IPM tone. This
pushbutton is reserved with the Hotel/Health Care feature
package.
SER CALL (SERIES CALL). Depressing this pushbutton after
extending an incoming call automatically causes the trunk to
recall the attendant when the station hangs up so the trunk can
be extended to the next station in the series call sequence.
Alternatively, the attendant can call or be called from a station (or
have a station diverted to the Attendant Console due to an ACOF
restriction on an accessed trunk group) and extend a trunk to the
station using this pushbutton, reinitiating the automatic recall
sequence to notify the attendant that the trunk is available for the
next user. A lit LED indicates action confirmation.
STAFFED LED. Lights only if the position is staffed.
START/STOP. Activates the keypad and provides dial tone, and
in the STOP mode, removes tick tone on outgoing calls.
TIME OF DAY (TOD). Allows the attendant to override any
variable display with the time-of-day display in hours and
minutes.
NOTE: See TL-130300-1001 for a description of Attendant
Console operations.
BLDU (Busy Lamp15.9 A BLDU can be used with the Attendant Console and
Display Unit)accessed from the Attendant Console to display busy line/trunk
groups. The BLDU can be located with the Attendant Console or
can stand alone.
See TL-I 30300-l 001 for a description of installation
procedures.
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							SW 52108f87s-217 
						

							TL-130500-1001LCD LINE DISPLAY FIELD
LCD TRUNK GROUP DISPLAY FIELD
HBLDU
(STAND-ALONE)
LINE GROUP
HUNDREDS KEYS
LEDS
I7 BASE
HANDSETr
1
:.: :.:.I:;:;:;:
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::;:::::.:,:.:.::.:,:.:.j:;:;:;. . .
BLDU- (MOUNTED)
Figure 16.1BLDU (Stand-Alone and Mounted)
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The BLDU can be operated as a stand-alone unit or can be
positioned on the Attendant Console so that the BLDU display is
directly above the Attendant Console display (Figure 16.1). A
detailed view of the BLDU showing the LCD line and trunk group
fields and the LCD line group selected display is illustrated in
(Figure 16.2). This view also shows the position of the ten line
group selection keys and the small rectangular red LED
indicators located immediately below each key. Refer to Table
16.1 for BLDU key functions.
The line and trunk group display fields use LCD elements to
block out the appropriate characters. If a trunk group is
restricted, an R is placed in view. Alternatively, if all trunks in a
trunk group are busy, a B is visible. If one or more trunks within
a trunk group are not busy (idle), the BLDU blanks the busy
display for that trunk group.
The line field display shows the status of a group of 100 lines.
Only the last two digits of the station numbers are shown so that
any hundreds group can be displayed. The seven-segment line
group display window shows which hundreds group is being
displayed in the line field.
The line group hundreds keys on the BLDU that allow the
selection of 10 different hundreds groups are defined in the data
base. The LED indicates which pushbutton was operated. The
remote control feature allows the attendant to select any
hundreds group. The line group two-digit display will show.thisselection and the active LED will be extinguished.
NOTE: Activation displays of hundreds groups not programmed
on one of the BLDU keys can be made only from an Attendant
Console associated with the BLDU.
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							TL-130500-1001BLDU16.2 The BLDU interfaces with the system via the ATT12
System(Attendant Interface) FB-17208-A card located in a PCMUS
Interfaceslot. This same card supports the Attendant Console data link.
l This card provides the digital data link channel connection to
the system.
l The data link is full-duplex, 1,200 baud, 20 ma current loop in
serial form.
l The BLDU can connect to one port on an 
ATT12 card, and an
Attendant Console can connect to the other 
ATT12 port. Up to
four 
BLDUs can connect in series to the same ATT12 port.
NOTE: The 
ATT12 is described in Table 3.6.
Data link cable and power cable length limitations exist that limit
the distance that a BLDU can be located from the system. Refer
to TL-130300-1001 for cable length specifications and a
description of BLDU installation procedures.
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							TL-130500-1001Data Link16.3 Once in service, any interruptions of service at the BLDU,
even momentarily unplugging the data link connector, will inititate
an automatic recovery process. The maintenance terminal can
also control the data link. The maintenance terminal can place
the data link in service or out of service. If remote applications
require, the standard type of data link used is compatible with
readily available equipment designed for this application. Since
this type of installation depends on the particular site, the specific
design is performed on a per-site basis by special engineering
personnel.
A BLDU only receives status data when its circuit is software
selected.
Switches16.4 BLDU switches include the following:
o DATA-LINK, loop-around switch. The last series-connected BLDU must have its loop-around switch set to the
loop position.
l OFF-LINE switch. This switch takes the BLDU off-line and
allows diagnostics resident in the BLDU to be executed. A
modem can be used for remote operation of a BLDU. In this
case, one data link channel is dedicated to the remote BLDU
Assign each BLDU a separate address (1 through 4). These
addresses are assigned via two manually positioned switches in
the BLDU. These switches are located under the BLDU cover.
They are set to 00 to assign address 1 to a BLDU, 01 for BLDU
address 2, 10 for BLDU address 3, and 11 for BLDU address 4.
These switch-selectable addresses correlate to software
addresses used by the system CPU during BLDU input/output
routines. By altering the switch address, 
BLDUs can be
interchanged in the system.
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							TL-130500-1001BLDU16.5 The BLDU is powered from either a 24-VAC transformer
Powerconnected to a 115 VAC power source or from a -48 VDC
power supply. See TL-130300-1001 for power connections for
the BLDU. TL-130100-1001 describes the operations that can
be executed from the BLDU.
Initialization (I)16.6 Once the connections to the BLDU have been completed,
turning the power on activates the initialization process. The
BLDU indicates this condition in the line group display; when the
initialization process is complete, the trunk group status display is
active and the station status display is ready for service. Either
local key control or remote operation from an Attendant Console
is required to establish the hundreds group to be displayed.
BLDU Display16.7 See Table 16.1 and Figure 16.2 for BLDU display fields
and Key Funtionsand key functions.
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