Dantel 49018 User manual

CAUTION
Install or remove modules from the shelf only when the power is off.
If you install a module in the shelf with the power on, the internal
circuitry may suffer damage and the product warranty will be void.
Remove and install circuit boards only in a static-safe environment
(use antistatic wrist straps, smocks, footwear, etc.).
Keep circuit boards in their antistatic bags when they are not in use.
Do not ship or store circuit boards near strong electrostatic, electromag-
netic, magnetic, or radioactive fields.
For more complete information on electrostatic discharge safety
precautions, refer to BellcoreTM Technical Reference #TR-NWT-000870.
Copyright 1997 by Dantel, Inc. • Dantel is a registered trademark of Dantel, Inc. • ISO 9001 Registered
Printed in the U.S.A.
INSTALLATION&OPERATION MANUAL
49018-0697<90-00089>
49018 STATION
SELECTOR
SUBASSEMBLY
About this Practice:
• This document has been
reformated to meet ISO 9001
requirements.
Issue date: June 1997
Reissued Practices: Updated and
new content can be identified by a
banner in the right margin.
UPDATED
Table of Contents
Ordering Information ........................................................................... 2
General Description.............................................................................. 2
Circuit Description ............................................................................... 3
Application Information ....................................................................... 7
Installation............................................................................................ 9
Operation ............................................................................................ 11
Technical Specifications ..................................................................... 12
Warranty ............................................................................................. 14

PAGE 2 49018-0697<90-00089>
ORDERING INFORMATION
NOTE: This section lists the different options available for this product. To order any of the avail-
able options, contact Dantel Inside Sales through our toll-free number, 1-800-432-6835.
OPTION NUMBER FEATURES
A12-49018-00 Station Selector Subassembly
GENERAL DESCRIPTION
The 49018 Station Selector Subassembly provides a two- address binary coded decimal (BCD) decoder for use in
Dantels 440 Communication Management System (CMS) or 440
Teleconference Management System (TMS) single station
package. It is primarily used for:
♦Station call
♦All-call
♦Group call decoding.
It can also be used for control functions such as:
♦Initiation of loopback testing
♦Utilization of * and # BCD data or A and C BCD data
to provide a busy control output and clear output.
The 49018 subassembly also provides a toll restriction function
and a ring generator ground enable output.
The 49018 is a plug-in printed circuit subassembly that fits into
Dantels 44020 DTMF Decoder Module. The front panel consists
of three LEDs that indicate the station selected and if the 0 or
1 digit is dialed (toll restriction function).The front panel lines
up with a cutout in the 44020s front panel to provide an inte-
grated panel surface. The 49018 operates from -10VDC supplied
by the host module.
Strap options include:
♦One, two, or three digit address codes
♦Reset in or out
♦* or # BCD inputs to control the busy output circuit
A and C BCD for special applications when the * and #
are used for other control control functions

49018-0697<90-00089> PAGE 3
The functional schematic for the 49018 Station Selector Subassembly is shown in Fig. 1. The circuit consists of:
♦6 miniature 10-digit code select switches
♦Two output station drivers
♦An address buffer latch
♦Two address comparators
♦A digit counter
♦A clock pulse delay circuit
♦Two station address latches
♦An interdigit and reset timer
♦A supervisory decoder
♦A busy latch
♦A busy reset pulse circuit
♦0 and 1 digit output drivers
In Dantels 440 CMS and TMS single station package, the 49018
subassembly BCD address decoder is controlled by BCD inputs
from the 44020 DTMF Decoder Module. The 49018 provides
buffered outputs for two station addresses. It also includes
buffered outputs for busy control, clear, and 0 and 1 digits.
The outputs are applied to the 44022 Station Interface Module
or the 44023 PABX/Trunk Interface Module of the 440 CMS or
TMS.
Miniature 10-digit switches on the 49018 subassembly are used
to preset the two address codes (station 1 and station 2). These
codes can be one, two, or three digits each. When the correct
incoming BCD address is decoded, the respective station driver
is grounded. At the same time, the 49018 provides a ground
enable output for the ring generator start.
Decoding
The BCD digit inputs from the 44020 DTMF Decoder are loaded
into the address buffer latch using pins P1-1, -2, -3, and -4. The
digits are loaded on the positive edge of the strobe pulse input at
P1-5. The address buffer latch remains in a set state and its
output is applied to both station address comparators.
Refer to Fig. 2 for 49018 Subassembly-to-Host Module pin
connections.
CIRCUIT DESCRIPTION

PAGE 4 49018-0697<90-00089>
FIG 1 - 49018 FUNCTIONAL SCHEMATIC
CIRCUIT DESCRIPTION
CLR OUTPUT
{A
B
C
D
P1 - 1
P1 - 2
P1 - 3
P1 - 4
BCD INPUT
DIGIT 1
DIGIT 0
P2 - 6
P2 - 5
0/1 SET
P2 - 10
CLR
A
SUPERVISORY
DECODER
DRIVER
DRIVER DRIVER *#C
TO 4 BIT ADDR COMP STATION 2
-10 VDC
P2 - 3
STATION 1 OUTPUT
CKT 1
-10 VDC
P2 - 4
STATION 2 OUTPUT
CKT 2
P2 - 11
DIGIT
COUNTER
FROM BCD BUSS
Q1 RING
GENERATOR START
NOTE: SYMBOLS ARE FUNCTIONAL LOGIC ONLY
DELAY ENABLE
DIGIT SELECT
123
BUSY
RESET
PULSE STATION 2
ADDRESS
COMPAR-
ATOR STATION 2
DRIVER
INTER-DIGIT AND RESET TIMER
Q
BUSY LATCH
CQ
S
DRIVER
P2 - 12 P2 - 7
P1 - 10 P1 - 12 REFERENCE
-10VDC GND
P1 - 5 P2 - 8 P2 - 9
STATION 2 ADDRESS LATCH
D2 D3
CLOCK PULSE DELAY CIRCUIT
IN OUT
RESET
STATION 1
ADDRESS
COMPAR-
ATOR STATION 1
ADDRESS LATCH
STROBE-IN RESET
PWR-UP CLR
PWR-UP BUSY
BUSY OUT
BCD BUSS
ADDRESS BUFFER LATCH
CLK CLR
STATION 1 DRIVER

49018-0697<90-00089> PAGE 5
49018
STATION
SELECTOR
SUBASSEMBLY
NOTE:
All connections to the 44020
Decoder outputs are made
directly through the J1/P1
and J2/P2 connectors
44020
HOST MODULE
POWER-UP
BUSY IN
POWER-UP
CLEAN IN
RESET IN
RING
GENERATOR
START
CLEAN OUT
BUSY OUT
DIGIT 1 OUT
DIGIT 0 OUT
CKT 2 OUT
CKT 1 OUT
P2-3
P2-4
P2-5
P2-6
P2-7
P2-10
P2-11
3
4
5
6
7
10
11
P2-8
P2-9
P2-12
P1-10
P1-12
-10
VDC
P1-1
P1-2
P1-3
P1-4
P1-5
STROBE
A
B
C
D
8
9
12
FIG. 2 - 49018 SUBASSEMBLY-TO-HOST MODULE PIN CONNECTIONS
The strobe pulse also advances the digit counter which counts
up to three digits. Additionally, the strobe pulse initiates a clock
pulse output from the clock pulse delay circuit to gate the
station address latches. During the digit count, selected by the
digit strap option, the address in the address buffer latch is
compared to the preset address code selected by the miniature
10-digit switches. If the code matches, the matching station
address latch is not set and the corresponding station drivers
(1 or 2) output (P2-3 or P2-4) is enabled (grounded).
The last digit, whether the digit strapping is a one, two, or
three-digit code, will inhibit additional clock oulses from enter-
ing the digit counter. When a station driver is enabled, the
corresponding front panel LED will light.
The busy control output can be activated internally or exter-
nally. This circuit provides a ground output at P2-7 that can be
used to apply a busy tone to a subscriber phone or outside line.
The busy output can be activated internally when a *, #, or
A BCD input (depending on strapping) is decoded. The busy
output can also be activated by an external Power-up Busy
input at P2-12.
CIRCUIT DESCRIPTION

PAGE 6 49018-0697<90-00089>
Clearing
The 49018 can be cleared internally or externally. When
strapped for internal clearing, the digit counter is restored three
seconds after a complete code is received, whether it is valid or
not. When strapped for external clearing, the busy circuit and
the digit counter are restored by a Power-up Clear, a Reset
input, or by internal decoding a *, #, or C BCD input,
depending on strapping.
Internal Clearing: When the reset strap is IN, the interdigit
timer and reset circuit clears the entire station decoder three
seconds after the last digit is entered, or if three seconds pass
between digits. If the reset strap is OUT, the circuit wil not reset
after the last digit, but will reset if three seconds pass between
digits.
External Clearing: Three modes external clearing can be used
to clear or reset the 49018 subassembly:
♦A reset (ground) is provided from the station or PABX/Trunk
Interface Module (44022 or 44023) at P2-8 or a Power-up
Clear at P2-9.
♦The second mode is provided when the # or * BCD out-
puts of the supervisory decoder are strapped to the clear and
set outputs. Normally, the # is used to set the busy latch
and the * will clear the busy latch. This function can be set
to reverse the busy latch operation. The busy latch, when set,
provides a ground at P2-7 and applies a reset pulse through
the busy reset pulse circuit to clear the 49018 and prepare it
to accept the next address. The busy latch remains set until
it is cleared by the xternal reset, Power-up Clear, or an
internal BCD output from the supervisory decoder.
♦The third mode can be used when the A and C BCD codes
are strapped IN and perform the same functions as described
for the # and * BCD supervisory decoder outputs.
Power-up Busy
A power-up busy input at P2-12 is provided to set the busy latch
when the power-up signal from the 44020 DTMF Decoder
Module is received. The busy latch may be cleared by external or
internal sources as described above.
Clear Output
A clear output (ground) is applied to the 44022 or 44023 inter-
face modules using P2-10 each time the 49018 is cleared.
Toll Restriction Outputs
A toll restriction output is provided whenever a 0 or 1 BCD
signal is decoded by the supervisory decoder. The 0 or 1
outputs do not require a reset code. They are applied through
respective buffer drivers at P2-5 or P2-6 to an external device
when toll restriction to a public telephone is desired.
CIRCUIT DESCRIPTION

49018-0697<90-00089> PAGE 7
Ring Start Output
A ring generator enable (ground) output is applied to the 48020
Ringing Generator Module and the 49020 Tone Supply Subas-
sembly using P2-11 when an address has been selected. This
output is switched to ground through the open collector of Q1.
The ground enables the ring generator and the ring/ring back
interrupt functions.
The 49018 subassembly is mounted to a 44020 DTMF Decoder
Module n a 440 CMS or TMS single station package. The 44020
module provides power and all input/output connections to the
49018. Fig. 3 shows a typical order wire application.
APPLICATION INFORMATION
CIRCUIT DESCRIPTION

PAGE 8 49018-0697<90-00089>
FIG. 3 - 49018 SUBASSEMBLY APPLICATION DIAGRAM
APPLICATION INFORMATION
41
44022
STATION
INTERFACE
4
600 Ω 600 Ω
XMT
RCV
12 11 10
9 8 7 5 6 4
3
2 1
P2 / J2
35
17 -24 OR -48 VDC
GND
10 11 12
P1 / J1
49020
TONE SUPPLY
SUBASSEMBLY
VDC VDC GND
REGULATOR
48020
RING
GENERATOR
7 13 51
53
38 40 36 34 32 30
4W RCV
4W XMT OR 2W XMT/RCV
2 WIRE
OFF HOOK #
ON HOOK *
BUSY TONE
RING BACK TONE
ALERT TONE
RING INTERRUPT
RING
GEN
SUPPLY
31
RING GEN
SUPPLY
23 43
21
19
RING GEN ENABLE
12 11 10
9 8 7 5 6 4 3 2 1
16
15
13
22
16
55 322 39 26 24 35 23 2125 31
RING
START
PWR UP CLR
STATION OUTPUT
GP CALL
DIGIT 0
DIGIT 1
BUSY
RESET
CLR
PWR-UP
BUSY
49
P2
P1
12 11 10
8 7 5 6 4 3 2
1
9
GND -20 -10
STROBE
D C B A
49018
STATION
SELECTION
44020
DTMF DECODER
20 18 27 26 35 17 39
* OR A * OR A # OR A # OR A
OUTPUT CLR EXT OUTPUT EXT CLR
-21/-56 V
GND
46 19 51 47 43
38
DISABLE INPUT
A B C D
STROBE
N/A
N/A
47
2
17
M LEAD
-21/-56
VDC
-10 -20
LINE DROP

49018-0697<90-00089> PAGE 9
INSTALLATION
The four straps used on the 49018 subassembly are described below. Refer to Fig. 4 and Table A.
FIG. 4 - 49018 SWITCH AND STRAP LOCATIONS
*
A
C
*
12
P1
P2
1
12
S1
S2
S3
S4
S5
S6
IN
OUT
1 DIGIT
2 DIGIT
3 DIGIT
RESET
CLR
#
#
SET
1
CKT 1
CKT 2
0/1
49018-00
STATION
SELECTOR
CKT 1
CKT 2
0/1
Clear and Set Straps:
The clear and set straps provide selection of # and * or A
and C BCD outputs to the supervisory decoder. # and * are
normally strapped to set and clear, respectively, the busy latch
circuit, and station one and two address latches when a
12-button DTMF phone pad is used. The A and C BCD
outputs are strapped when the # and * functions are used for
other applications
Reset Strap:
When strapped IN, the internal reset is initiated after three
seconds or after three seconds have passed between digits.
When strapped OUT, reset is controlled externally as described
in the Circuit Description section of this manual.
Digits:
The digits straps provide selection of one, two, or three digit
address codes.

PAGE 10 49018-0697<90-00089>
TABLE A - 49018 STRAP OPTIONS
INSTALLATION
OPTION
RESET
Self reset in 3 seconds
External or decoded tone reset
NUMBER OF DIGITS
One-digit codes
Two-digit codes
Three-digit codes
CIRCUIT 1 CODE
First digit
Second digit
Third digit
CIRCUIT 2 CODE
First digit
Second digit
Third digit
BUSY/RESET (WITH TONE)
Busy with *
Reset with #
Busy with #
Reset with *
Busy with A
Reset with C
STRAP SETTING OR SWITCH
Reset IN
Reset OUT
Digit 1
Digit 2
Digit 3
S1
S2
S3
S4
S5
S6
SET *
CLR #
SET #
CLR *
SET A
CLR C
Installation
Verify that the option straps are installed as desired
Remove the hole plug from the front panel of the 44020 host
module. Insert P1 and P2 of the 49018 subassembly into J1 and
J2 of the 44020, ensuring that all the pins go in straight. The
subassembly should sit down on the standoffs and appear
straight in the 44020s cutout. Secure with two screws in the
mounting standoffs.
Checkout
Refer to Table B for checkout procedure.

49018-0697<90-00089> PAGE 11
STEP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ACTION
Remove power from shelf
Install 49018 Subassembly as described in
Installation section
Verify strapping:
A. Busy/Reset
(1) SET *
(2) CLR #
(or per application)
B. Reset OUT
C. Digits 1,2, or 3
Install 44020 with 49018 subassembly on
extender card and insert in shelf.
Apply power to shelf
On phone dial pad, press Station 1 numbers
as set on S1, S2, and S3.
Press # (or selected clear code).
Press * (or selected busy code).
On phone dial pad, press Station 2 numbers
as selected on S4, S5, and S6.
Press and hold the 1 digit.
Release the 1 digit.
Press and hold the 0 digit.
Release the 0 digit.
Remove power from shelf.
Remove extender card, ensuring straps
are set for system operation.
reinstall 44020 in shelf and apply power.
RESULTS
Power-up Clear resets all 49018
subassembly circuits
CKT 1 LED on front panel comes ON.
Station 1 44022 or 44023 functions activate.
All 49018 circuits clear.
44022 or 44023 shows busy condition.
CKT 2 LED on front panel comes ON.
Station 2 44022 or 44023 functions activate.
Front panel 0/1 LED comes ON.
0/1 LED goes OFF.
0/1 LED comes ON.
0/1 goes OFF.
INSTALLATION
TABLE B - 49018 SUBASSEMBLY CHECKOUT PROCEDURE
OPERATION
The 49018 subassembly is operated as an integral part of the 440 system single-package operation. When a station is
dialed, verify that CKT#1 or CKT#2 LED comes ON as appropri-
ate. If the toll restriction is in use, verify that the 0/1 LED comes
ON when a 0 or 1 is pressed on the phone keypad.
NOTE: The toll restriction does not have to be connected for the 0/1
LED to light when the 0 or 1 key is pressed.

PAGE 12 49018-0697<90-00089>
TECHNICAL SPECIFICATIONS
DESCRIPTION
Input Voltage Range
Input Power Requirements
Idle
Full Load
Heat Dissipation
Idle
Full Load
Inputs: BCD, Power-up Clear, Reset,
Power-up Busy
Outputs: Station 1, Station 2, Clear,
Digit 1 or 0, Busy
Ring Generator Start
Station Outputs
Valid Codes
Clear Output
Reset Modes
Interdigit Time Out
Reset
Physical Dimensions
Weight
Operating Temperature Range
VALUE
-10 + VDC (from host module)
0.7 mA
18.0 mA
0.03 BTU/Hr.
0.62 BTU/Hr.
CMOS, 100K ohms to -10 VDC, Logic 1 = 0 + 0.5VDC (ground),
Logic 0 = 10 + 0.5VDC, Decoded state is Logic 1
Open Drain 200 mA, -21 to -56VDC, Logic 1 = 0 + 0.5VDC
(ground), Logic 0 = 10 + 0.5VDC, Decoded state is Logic 1
Open Collector 50 mA, -56VDC max.,
Logic 1 = 0VDC (ground), Decoded state is Logic 1
2 (CKT 1 and CKT 2), strappable for 1, 2, or 3 digits
BCD 1 thru 9 and 0 for CKT 1 & 2, * & # or
A & C for clear or busy
Occurs on reset input, power-up clear input or
reset as specified below
3 seconds nominal between digits
Strappable for self-clear 3 seconds after decoding, triggered
clear from external device or from *, #, or C tone.
5.0" x 2.9" x 0.9"
2.2 Oz.
0 to 60° C

49018-0697<90-00089> PAGE 13
NOTES

PAGE 14
14 PAGES 49018-0697<90-00089>
LIMITED WARRANTY
The Seller warrants that the standard hardware products sold will be free from defects in material and work-
manship and perform to the Sellers applicable published specifications for a period of 18 months for hardware,
and 3 months for software, from the date of the original invoice. The liability of the Seller hereunder shall be
limited to replacing or repairing, at its option, any defective products which are returned F.O.B. to the Sellers
plant, (or, at the Sellers option, refunding the purchase price of such products). In no case are products to be
returned without first obtaining permission and a customer return authorization number from the Seller. In
no event shall the Seller be liable for any consequential or incidental damages.
Equipment or parts which have been subject to abuse, misuse, accident, alteration, neglect, unauthorized
repair or installation are not covered by warranty. The Seller shall make the final determination as to the
existence and cause of any alleged defect. No warranty is made with respect to custom equipment or products
produced to the Buyers specifications except as specifically stated in writing by the Seller in the contract for
such custom equipment.
This warranty is the only warranty made by the Seller with respect to the goods delivered hereunder, and may
be modified or amended only by a written instrument signed by a duly authorized officer of the Seller and
accepted by the Buyer.
Warranty and remedies on products not manufactured by the Seller are in accordance with warranty of the
respective manufacturer. THE SELLER MAKES NO OTHER WARRANTY OF ANY KIND WHATSOEVER,
EXPRESSED OR IMPLIED; AND ALL IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PUR-
POSE WHICH EXCEEDS THE AFORESAID OBLIGATIONS IS HEREBY DISCLAIMED BY THE SELLER.
INCASE OF DIFFICULTY
If you experience difficulty with this equipment, check the following, as appropriate:
1. Switch settings
2. Signal levels
3. Software configuration
4. Connections between Dantel’s equipment and your equipment.
If there is still a problem, substitute equipment that is known to be good. For additional assistance, call
Dantels Customer Support Services Department weekdays, 6 A.M. to 5 P.M. pacific time:
1-800-4DANTEL(1-800-432-6835).
If a thorough checkout shows a piece of equipment has malfunctioned, you may return it to the factory. For
repairs and emergency replacements, obtain a Return Material Authorization (RMA) number from the Cus-
tomer Service Representative at 1-800-4DANTEL (1-800-432-6835).
To ensure expedient processing of your order, provide a purchase order number and shipping and billing
information when requesting an RMA number. Also, when the units are returned to Dantel, include a descrip-
tion of the failure symptoms for each unit returned. Send defective equipment to:
Dantel, Inc. • 2991 North Argyle Avenue • Fresno, California 93727-1388
P.O. Box 55013 • Fresno, CA 93747-5013 Phone [phone] Fax [phone] http://www.dantel.com
WARRANTY