Viking lsd-2 Service Manual

• Routes both incoming and outgoing calls

• Allows an Emergency device to share a phone
line with other devices (fax machines, phones,
modems)

• Gives priority to the Emergency devices

• Incoming calls routed to one of two ports by
Caller ID, Distinctive Ring or Call Back

• Status LED displays mode of operation

• Can store up to 12 Caller ID numbers

• Provides a busy signal to the phone port when
an Emergency device is in use

LSD-2

LSD-2

Line Sharing

Device

August 16, 2002

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TECHNICAL

TECHNICAL

A Smart Line Sharing Device with

Inbound Switching Capability

Why pay for a dedicated line for your elevator/emergency
phone or alarm panel?

The LSD-2 Line Sharing Device allows the user to share
an existing phone line with an emergency phone or other
priority alarm device. This can save hundreds of dollars a
year over leasing a dedicated phone line. The LSD-2 can
be used on any C.O. line or analog PABX/KSU station.

An outbound call on the DEVICE 2 (PRIORITY) port
takes priority over a call in progress on the DEVICE 1
port. Any call in progress on the DEVICE 1 port will be
disconnected for 2 seconds, returning dial tone to the
DEVICE 2 (PRIORITY) port. A busy signal is then sent to
the DEVICE 1 port.

For incoming calls the LSD-2 can route calls to the DEVICE 2 (PRIORITY) port using Caller ID,
Distinctive Ring, or Call Back. All other calls will be routed to the phone port. Alternatively, the LSD-2
can be set up so that all inbound calls are routed to the DEVICE 2 (PRIORITY) port. Note: Caller ID is

not passed through the LSD-2 to the devices.

Important: When the emergency device is in use, the phone line is not available for normal use. Any

additional emergency calls will have to be made on another phone line. For this reason the LSD-2 is not
recommended for single line applications.

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Power: 120VAC / 12VDC 500mA UL listed adapter provided
Dimensions: 133mm x 89mm x 44mm (5.25” x 3.5” x 1.75”)
Shipping Weight: .9 kg (2 lbs)
Environmental: 0° C to 32° C (32° F to 90° F) with 5% to 95%

non-condensing humidity

Talk Battery: 35V DC
Connections: 6 screw terminals

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• Share an existing phone line with an emergency
device such as:

- Emergency phones

- Area of refuge phones

- Alarm panels

- ATM's

- Card readers

- Any device that needs instant access to a

phone line

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C.O. Line

or Analog

PABX/KSU

Station

PABX/KSU
Trunk Port

Standard

Telephone

Emergency

Phone, Alarm

Panel or other

Priority Device

(E-1600A shown,

not included)

Switch

1

1

2

2

3

3

ON/OFF

ON

OFF

ON

OFF

ON

OFF

Description

Quick Call Back Mode

Disable Quick Call Back Mode

Distinctive Ring Mode

Disable Distinctive Ring Mode

Caller ID Mode

Disable Caller ID Mode

Note: When all switches are OFF, all inbound calls are
routed to the DEVICE 2 (PRIORITY) port.

Step 1. Connect the incoming phone line or analog PABX station to the terminal positions marked CO IN.

Step 2. Connect the standard phones, unused trunk or other non-priority device to the terminal positions marked DEVICE 1 port.

Step 3. Connect the Emergency Phone, Alarm Panel or other priority device to the terminal positions marked DEVICE 2

(PRIORITY) port.

Step 4. Connect the 12VDC wall adapter to the LSD-2.

Note: Be sure the LSD-2 has power available at all times. If power is lost, the phone line will be connected to the priority device only.

A. Call Back Mode

To place the LSD-2 in Call Back Mode, move DIP switch 1 to the ON position.

B. Distinctive Ring Mode

To use the Distinctive Ring Mode, first purchase distinctive ringing service from your local phone service provider.
Then move DIP switch 2 to the ON position. Note: In this mode the LSD-2 detects double or triple custom ringing.

If all of the switches are in the OFF position, all inbound calls are routed to the DEVICE 2 (PRIORITY) port. Once any of
the DIP switches are turned on, inbound calls default to the DEVICE 1 port unless the selected method is detected by the

LSD-2. The LSD-2 can use three different methods to determine if an incoming call is to be switched to the DEVICE 2 (PRI-
ORITY) port, instead of defaulting to the DEVICE 1 port. Each of these methods can be switched on or off using the DIP

switches located on the front edge of the board. When mixing modes of operation, the LSD-2 uses all the modes that are
turned on, and if any of the selected triggers are detected, the incoming call will be routed to the DEVICE 2 (PRIORITY)
port. If a selected trigger(s) is not detected, the inbound call will ring through to the DEVICE 1 port.

Note: To force all calls to be routed to the DEVICE 1 port, simply set DIP switch 3 to the ON position, but do not program
any caller ID numbers.

Fax

Machine

120V AC/

12V DC

Adapter

Included

Credit Card

Reader

IMPORTANT: Electronic
devices are susceptible to

lightning and power station
electrical surges from both the AC
outlet and the telephone line. It is
recommended that a surge protec­tor be installed to protect against
such surges. Contact Panamax at
[phone] or Electronic
Specialists Inc. at [phone].

!

Modem

VIKING

POWER 12V DC

CALLER ID

CUSTOM RINGING

QUICK CALL BACK

SET

STATUS

BUTTON

LED

MODEL LSD-2

©

VIKING

ELECTRONICS

HUDSON, WI 54016

LINE SHARING DEVICE

C.O.

IN

1 2 3

DEVICE 1

-or-

DEVICE 2

(PRIORITY)

2 3

1

6

4 5

7 8

9

0

Send

EMERGENCY

PHONE

MODEL E-1600A

CALL

CONNECTED

Push

To
Call

HUDSON, WI 54016

S2

1 2 3

1 2 3

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VIKING

ELECTRONICS

MODEL LSD-2

C.O.

IN

DEVICE 1

DEVICE 2

(PRIORITY)

ON

OFF

S2

1 2 3

VIKING

CUSTOM RINGING

QUICK CALL BACK

SET

BUTTON

CALLER ID

STATUS

LED

LINE SHARING DEVICE

ON

POWER 12V DC

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A. LED Status

B. Outbound Calls

When the LSD-2 is idle, the Status LED will be lit solid, and both ports will be connected to the internal talk battery. If
a device attached to the DEVICE 1 port goes off-hook, the phone line will be switched to the DEVICE 1 port. If the
device attached to the DEVICE 2 (PRIORITY) port goes off-hook, the phone line will be switched to the DEVICE 2
(PRIORITY) port. If the device attached to the DEVICE 2 (PRIORITY) port goes off hook while a call is in progress on
the DEVICE 1 port, both ports will be switched away from the phone line for two seconds (programmable from 1-10
seconds), returning fresh dial tone to the DEVICE 2 (PRIORITY) port. While the DEVICE 2 (PRIORITY) port is in use,
a simulated busy tone is generated to any device attempting to go off-hook on the DEVICE 1 port.

C. Inbound Calls

To use the Quick Call Back mode, call into the LSD-2 from another phone line, listen for a single ring back tone and
hang-up. Wait 6 seconds, then call back to the LSD-2 within 20 seconds. The LSD-2 will route the incoming call to
the DEVICE 2 (PRIORITY) port instead of defaulting to the DEVICE 1 port (see Programming section A).

1. Quick Call Back Method (switch 1 ON)

Custom Ring switching relies on “Distinctive” or “Custom Ring” services provided by your local telephone compa­ny. Any call with a custom ring cadence will be routed to the DEVICE 2 (PRIORITY) port. Inbound calls with stan­dard ring cadence will be routed to the DEVICE 1 port. The LSD-2 accepts both double and triple custom ring
cadences as custom (see Programming section B).

2. Custom Ring Method (switch 2 ON)

C. Caller ID Mode

Step 1. Move DIP switch 3 to the ON position.

Step 2. Call into the LSD-2, i

f a Caller ID is received that is not stored in the unit, the LSD-2 Status LED will go into

a fast flash mode.

Step 3. While the LED is flashing fast, push the SET button. This will store the new Caller ID number into memory

and re-ring the DEVICE 2 (PRIORITY) port.

Note: If more than 12 numbers are attempted to be stored, the LSD-2 will re-ring the DEVICE 1 port. If
the Caller ID number is already stored in memory, the LED will not fast flash and the call will be automati­cally routed to the DEVICE 2 (PRIORITY) port.

To clear out the Caller ID memory, press and hold the SET button while powering up the LSD-2. The

status LED will wink off showing that all 12 memory locations have been cleared.

LED Status

Lit up

Flash

Flash After Ring

Fast Flash

Operation

Power is applied to the LSD-2.

The LSD-2 is active.

In the Call Back mode, the LED will continue to flash for 20 seconds.

In the Caller ID mode, the LED will fast flash if a Caller ID number is received that is not in memory.

D. Disconnect Time

The length of time that the LSD-2 disconnects the DEVICE 1 port before gaining fresh dial tone for a DEVICE 2 (PRI­ORITY) call, is factory set to 2 seconds. If this is not enough time for the line to return fresh dial tone, the LSD-2 can

be programmed to delay anywhere from 1 to 10 seconds.

Step 1. With the LSD-2 sitting in idle state, momentarily press the SET button and wait for the STATUS LED to blink the

current disconnect time in seconds. If the STATUS LED blinks twice, the disconnect time is set to 2 seconds.

Step 2. The STATUS LED remains off for approximately four seconds, during this time you may press the SET button once for

each second of disconnect time required (Example: five times for 5 seconds). The LSD-2 will confirm by blinking the
new disconnect time on the STATUS LED.

Important: Be sure that any auto-dialing device on the DEVICE 2 (PRIORITY) port is programmable to provide a
longer delay time before dialing than the LSD-2’s disconnect time, this assures that the unit waits until there is fresh
dial tone before dialing.

Due to the dynamic nature of the product design, the information contained in this document is subject to change without notice. Viking Electronics, and its affiliates and/or
subsidiaries assume no responsibility for errors and omissions contained in this information. Revisions of this document or new editions of it may be issued to incorporate
such changes.

Fax Back Doc 262

ZF301680 Rev A

Printed in the U.S.A.

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Caller ID switching relies on Caller ID services provided by your local telephone company. Any number pro­grammed into one of the 12 Caller ID memory positions will be automatically routed to the DEVICE 2 (PRIORITY)
port (see Programming section C).

3. Caller ID Method (switch 3 ON)

If a priority device, such as an emergency phone, is sharing a line with an “outbound only” device, such as a cred­it card reader, or “outbound only” trunk, set all switches OFF and all inbound calls will be routed to the DEVICE 2

(PRIORITY) port.

4. All Inbound Calls Routed to the DEVICE 2 (PRIORITY) Port

If all inbound calls are to be routed to the DEVICE 1 port, set DIP switches 1 & 2 OFF and 3 to the ON position, but
do not program any caller ID numbers.

5. All Inbound Calls Routed to the DEVICE 1 Port