Valcom V-9923B Bruksanvisning
Valcom
Intercomsystem
V-9923B
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VSP-V-9923B
Issue 4
1 947923
V-9923B
CODE CALL UNIT
INTRODUCTION
This manual provides instructions for identification,
installation, operation, and technical assistance for
the Valcom V-9923B Code Call Unit.
The V-9923B provides two or three digit code call
paging via a loop start trunk port on a PABX or by
the use of a spare line button on a key system.
The V-9923B code call unit complies with Part 68 of
the FCC Rules and Regulations and has been granted
FCC Registration #BAFUSA-68753-KX-N. The
ringer equivalence is 0.1B and the unit requires a
USOC RJ21X connector.
In accordance with FCC Rules and applicable tariffs,
this code call unit may only be installed with the
authorization of the owner of the host system.
The FCC Registration #BAFUSA-68753-KX-N, will
be listed in the affidavits filed with the telephone
company; it will also be recorded in the system log
kept by installation and maintenance personnel. The
local telephone company is to be notified of the FCC
registration number when this code call unit is
installed.
SPECIFICATIONS
The V-9923B is capable of providing code signaling
for paging purposes; it provides for "meet me"
answer of code call and provides talk circuit and
signaling tone.
Features
• Trunk level access on PABX's, station level
answer
• Can be used with 1A2 type key systems
• 81 two digit codes or 729 three digit codes
• Uses rotary or tone dial signaling
• Dial tone to calling party
• Coded tone output for paging systems
• Switch controlled code verification tone
• Automatically discontinues code sending when
answered
• Capable of being used with another V-9923B to
provide two link operation
• Uses standard 1A2 key system voltages
• Mounts on the wall, in a key cabinet, or in the
PABX Cabinet
Capacity
Each V-9923B Code Call Unit provides the necessary
equipment for 1 link of code call. For an additional
link of code call, another V-9923B is required (two
links maximum).
Dimensions
7.1"H x 5.9"W x 2.1"D
(18.03cm H x 14.99cm W x 5.33cm D)
Power Requirements
The Valcom V-9923B requires –24 Vdc talk
battery and –24 Vdc signal battery. The current
consumption and voltage range is shown in Table 1.
Table 1
Range Idle Operating
"A" Battery –21.5 to –26 Vdc 65mA
"B" Battery –21.5 to –26 Vdc 125mA
Nominal Timing and Frequency
2 947923
Specifications
The timing and frequency specifications of the
Valcom V-9923B code call unit are shown in Table
2. Figure 1 is a timing chart showing the nominal
timing of a code call.
Table 2
Dial Tone Frequency 180 Hz
Coded Tone Frequency 550 Hz
Time Tones Broadcast 370 ms
Time between tones in a sequence 500 ms
Time between digits in a sequence 1.5 sec
Time between series of digits 8 sec
The Valcom V-9923B will detect 20-30 Hz ringing
on the answer port. The applied ringing voltage
should be 75 to 125 Vac.
DESIGN
The V-9923B provides two or three digit code call
paging via a loop start trunk port on a PABX or by
the use of a spare line button on a key system. Figure
2 is a simplified block diagram showing the code call
unit and its connections.
NOTE: The code call unit is designed so that it will
complete a code call sequence before resetting and
returning dial tone, even if all parties hang up.
Application
Key systems and PABX's used in:
• Department stores/shopping centers
• Hospitals, nursing homes
• Noisy locations, manufacturing plants
• Schools, universities
Additional Materials Required
Additional equipment is required to complete a
system when using the V-9923B. These items are:
• -24 Vdc power supply (if existing supply
inadequate or non-existent)
• 66 type connecting block
• 25 pair cable with a female amphenol connector
on one end
• twisted pair crossconnect wire
TONE ON
TONE OFF
.37 sec.
.50 sec.
1.5 sec. 1.5 sec. 8 sec.
"3" "1" "2" "3" "1"
SEQUENCE
BEGINS
SEQUENCE
BEGINS
AGAIN
CONTINUES UNTIL
A
NSWERED OR
CALLING PARTY
GOES ON HOOK
FIGURE 1
3 947923
INSTALLATION
Precautions
All precautions have been taken at the factory to
insure that the equipment functions properly when
installed correctly. Please follow the precautions
listed below before applying power to the equipment
or the equipment may be damaged and the warranty
voided.
a) If power was previously connected,
disconnect or remove power before inserting
or removing unit from the amphenol
connector.
b) Exercise caution when crossconnecting
wires that two adjacent terminals are not
bridged together.
c) Double check all connections before
applying power.
d) Use twisted pair wire for all connections.
Mounting
The Valcom V-9923B code call unit may be mounted
in a key cabinet relay rack or on the wall near the
distribution frame. When choosing a location, it is
necessary that the loop resistance of the PABX or key
system are not exceeded.
Mount the unit in a vacant space in an equipment
cabinet, rack, or key system cabinet, allowing enough
room at the rear of the unit to plug in an amphenol
connector. Mount a 66B type punchdown block near
the unit and label it per Figure 3.
Run a 25 pair cable with a female connector from the
unit to the connecting block. The cable should be
terminated on the connecting block in standard color
code order on a row of the connecting block. Verify
all connections before plugging the amphenol end of
the cable into the V-9923B code call unit.
Connections to PABX
The connections required to connect the V-9923B
to a PABX are shown in Figure 4. The V-9923B
requires a loop start trunk port from the PABX for
access. If more than one link of code call is being
provided, the second V-9923B would require a trunk
also and the two trunks should be in a hunt group
within the PABX. This arrangement allows access to
the second V-9923B if the first V-9923B is in use.
NOTE: ADVISE PERSONNEL USING CODE
CALL UNIT TO ALWAYS WAIT FOR DIAL
TONE FROM CODE CALL UNIT BEFORE
DIALING IN CODE NUMBER!
To answer the code call requires a station from the
PABX. If two code call units are being used, two
stations would be required and they would have to be
in a rotary hunt group also.
Connections to Key Systems
The connections required to connect the V-9923B
to a 1A2 key system are shown in Figure 5. The T,
R, A and L leads are multiplied to all phones in the
system. Use a spare pick-up button and install a 10K
Ohm 1/4 watt 5% resistor either in the phone or at the
connecting block in series with the A lead from each
phone. The V-9923B will discontinue the code call
paging when it recognizes two phones off hook with
two 10K Ohm resistors to ground on the A leads.
NOTE: WHEN USING 1A2 KEY TELEPHONES,
THE TO AND RO LEADS THAT WERE USED
FOR PABX CONNECTION ARE NOT USED.
A
CCESS
PO RT
A
NSW ER
PO RT
V
-9923B
CODE CALL
TO
RO
TT
RT
IN
OUT
T
R X
ANALOG
PBX
STAT ION
CIRCUIT
TONE OUTPUT
TO PAGING
SYSTEM
SW ITCHED
RELAY
OUTPUT
EP1 EP2AB AG BB BG LS
Y
TO –24 Vdc AND
10 V ac POW ER
SU PPLIES
TO N EXT V-9923B
CODE CALL UNIT
IF EQUIPPED
INH
L
Y
X
Y
Y
PBX
OUTGOING LOOP
START CO TRUNK
10K
SPARE LINE BUTTON
ON KE Y TELEPHONE
USED W ITH PBX
USED W ITH 1A2 KEY S YST EM
FIGURE 2
Produktspecifikationer
| Varumärke: | Valcom |
| Kategori: | Intercomsystem |
| Modell: | V-9923B |
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