Viking C-500 Product Manual

PRODUCT MANUAL

Designed, Manufactured and Supported in the USA

SECURITY & COMMUNICATION SOLUTIONS

Advanced Two Door Entry Phone Controller

with Call Forwarding and Door Strike Controls

Features

The C-500 allows single line telephones or a
telephone system to share a phone line with two
Viking entry phones. Up to four C-500’s can also be
connected in series allowing control of up to eight
entry phones and/or door strikes. Tenants may
answer an entry phone call, converse with the
visitor and let them in with a touch tone command
which activates one of two relays to control a gate
or door strike.

The C-500 also has a built-in five number dialer to
call your cell phone or an outside line if there is no
answer on the inside phone. If the outside call is
busy or ring no answer, the C-500 can call up to four
more numbers.

The C-500 provides the house phones with user
programmable entry phone “Caller ID”. Tenants may
also call the entry phones for monitoring purposes
or enter touch tone commands to activate,
deactivate or toggle the door strike/gate relays.

The C-500 allows up to 6 permanent keyless entry
codes, 2 “one time use” entry codes and 1 toggle
entry code for each door. The C-500 provides
optional entry phone distinctive ring, two trigger
inputs for “Request to Exit” and field programmable
Caller ID or beep tones when answered to indicate
which door is activated.

• Allows single line telephones or a telephone system to
share a phone line with two Viking entry phones

• Distinctive ringing, programmable entry phone Caller ID or
beep tones allow you to distinguish front and back door
entry calls from CO calls

• Stackable - connect up to four C-500’s to control up to eight
entry points

• Built-in five number call forwarding dialer (if inside phone
doesn’t answer), detects busy or ring no answer and goes
on to the next number

• Provide entry phone activated chimes and whole house
paging when used with an SLP-1 or SLP-4

• Analog Station Mode allows entry phones to connect to
analog PABX station

• Two N.O./N.C. (SPDT) 5A door strike relays with 1 or 2
digit activation commands

• Monitor any entry phone

• Up to 6 different keyless entry codes, 2 “one time use” key­less entry codes, and 1 keyless toggle code per entrance

• Auto answer for remote programming, relay control and
monitoring

• Two trigger inputs for Request to Exit (REX), immediate call
forwarding or lighted doorbell switches to activate entry
phone calls

• Produces “Call Waiting” tones if the entry phone is
activated when the house phones are on a call

• Compatible with the following Viking entry phones:

- E-10A, E-20B, E-30, E-32, E-35, E-40, E-50, E-60, E-65,

E-70, and E-75

- K-1500-7 Stainless Steel Panel Phone

- K-1700-3 and K-1705-3 Phone with Keypad

- K-1900-8 Stainless Steel Panel Phone with Keypad

- Or use with any analog touch tone phone

• Add one or two (expandable to 8) entry phones to your
standard home or office phones to provide:

- Door communication - Gate Entry

- Door entry - Keyless Entry

• Provide commercial or residential security via two-way
handsfree communication at the door and gate

• Connects in series with a single phone line, phone
system analog station port or unused line input (loop
start trunk input)

• High security building entry systems

• Door strikes and gates in conjunction with entry
phones or hot-line/panel phones

Power: 120VAC / 13.8VAC 1.25A, UL listed adapter
provided
Dimensions: 5.25" x 4.1" x 1.75" (133mm x 104mm x
44mm)

Shipping weight: 2 lbs. (0.9kg)
Environmental: 32°F to 90°F (0°C to 32°C) with 5% to

95% non-condensing humidity
Ring Output: 5 REN, capable of ringing (10) 0.5 REN
phones

Talk Battery: 44V DC
Relay Contact Rating: 5A @ 30VDC / 250VAC Maximum
Connections: (19) cage clamp screw terminals

C-500

Advanced Two Door

Entry Phone Controller

with Call Forwarding

August 7, 2018

Applications

Specifications

www.VikingElectronics.com

Information: 715-386-8861

VIKING

2

Features Overview

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

ON

1 2

Power Input: 13.8 VAC

@ 1.25A adapter included

Red Power Indicator LED

C.O./Phone Line Input: Connect to

analog phone line, analog phone
system station port, FXS port, etc.

Note: If installing without a phone
line, “*5” must be programmed.

Line Out To Phones: Connect to
single or multi-line phones or trunk
input of analog PABX/KSU phone
system.

Entry Phone 1 Input: Connect to a
Viking E-Series or K-Series entry
phone. Note: Standard analog POTS

phone can also be used.

Door Strike 1 Relay Contact
Output: One 5 Amp (N.O./N.C.)

SPDT contact to activate a door strike,
magnetic lock or gate controller.

Door Strike 1 LED:

Lights while door strike
1 is activated.

Door Strike 2 LED:

Lights while door strike
2 is activated.

SLP Control Output: Connect to
Viking model SLP-1 or SLP-4 to
provide door chimes over whole
house audio systems. Caution: The

SLP-1 and SLP-4 inputs are polarity
sensitive.

Door Strike 2 Relay Contact Output:

One 5 Amp (N.O./N.C.) SPDT contact
to activate a door strike, magnetic lock
or gate controller.

Entry Phone 2 Input: Connect to a
Viking E-Series or K-Series entry
phone. Note: Standard analog POTS

phone can also be used.

+ -

Trigger Input 1

Option 1: Connect to a momentary

N.O. Request to Exit (REX) switch to
activate the door strike 1 relay (Dip
switch 2 must be OFF and “##3” must
be programmed).

Option 2: Connect to a SPST momen­tary lighted (6-16V bulb) or non-lighted
doorbell switch. The doorbell switch
will initiate a call from entry phone 1
(Dip switch 2 must be ON).

Note: Maximum wire length with
CAT5E is 1,000 ft.

Trigger Input 2

Option 1: Connect to a momentary

N.O. Request to Exit (REX) switch to
activate the door strike 2 relay (Dip
switch 2 must be OFF and “##3” must
be programmed).

Option 2: Connect to a Viking model
CTG-1 with CTGF-BKD software to

automatically forward door calls at
specific times during the day or week­ends (”##4” must be programmed).

Note: If calls need to be forwarded at
differing times each day, a Viking
model CTG-2 can be used.

Note: Maximum wire length with
CAT5E is 500 ft.

Note: The C-500 call forwarding feature and analog station mode are not compatible with
“MagicJack” phone service, to call out to telephone numbers. Local ringing to the house phones
does work properly with “MagicJack” service.

3

VIKING

©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

T

RIG

GER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

VIKING

©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

VIKING

©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

Standard

Analog

Phone(s)

OR

Analog Trunk /

Line Input of a
Phone System

VIKING

©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

C.O. / Phone

Line Input

* Entry Phone 8

K-1700-3 shown

(DOD 157)

* Entry Phone 7

K-1705-3-BN shown

(DOD 159)

Entry
Phone 1
E-40-SS

shown

(DOD 187)

Entry
Phone 2
E-50-BN

shown

(DOD 191)

Entry Phone 3

E-60-WH shown

(DOD 206)

Entry Phone 4

E-65-BK shown

(DOD 203)

Entry Phone 5

E-30 shown

(DOD 207)

Entry Phone 6

E-75-SS shown

(DOD 208)

Unit 1

(Program: 2-4#48, 1#49)

Unit 2

(Program: 2-4#48, 2#49)

Unit 3

(Program: 3-4#48, 3#49)

Unit 4

(Program: 4#48, 4#49)

Analog
Station

Port on a

Phone

System

PABX/KSU

(Program

1#63)

OR

Installation and Applications

13.8V AC
Adapter

included

Standard

Analog Phone(s)

OR

Analog Trunk / Line Input

of a Phone System

C.O. / Phone

Line Input

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

5A@30VDC/
250VAC max

(Power typically

not required for

gate controllers)

Door Strike /

Magnetic Lock 2

120V AC

Entry Phone 2

K-1700-3 shown

(not included,

see DOD# 157)

Dip switch 3

to OFF

Contol Output to SLP-1 or SLP-4

5A@30VDC/ 250VAC max

(Power typically not required

for gate controllers)

Door Strike /

Magnetic Lock 1

120V AC

Entry Phone 1

E-40-SS (not included,
see DOD# 187)

120V AC

R
E
X
1

R
E
X
2

B. Connecting up to Four C-500’s to Control up to Eight Viking E or K Series Entry Phones

on a Single CO/Phone Line or Phone System Analog Station Port

1. Connecting to a Single CO/Phone Line (0#63 / Factory Default) -OR-

2. Connecting to a Single Phone System Analog Station Port (1#63 / Analog Station Mode Enabled)

A. 1 or 2 Viking E or K Series Entry Phones Sharing a Single Line with Optional Call

Forwarding, Keyless Entry and Door Strike/Gate Control

*Note: Dip Switch 3 to OFF.

4

Note:

1. Dial “9” to access an outside line should only be programmed in unit 1.

2. The following programming commands must be programmed the same in each unit: security access code,

incoming ring count for auto answer, total number of units, and analog station mode.

3. When connected to a single CO/phone line (analog station mode disabled – 0#63), incoming ring count before
auto answer must be programmed to a value higher than the maximum ring count from entry phone before call
forward (or the C-500 could answer an entry phone call from another C-500).

4. Connect the multiple units as shown and refer to Section 5, “Programming Multiple Units” on page 7 for the
initial programming procedure.

C. Provide Paging with Four Different CD Quality Door Chimes and Control of up to Four Entry

Phones and Door Strikes from a Single Phone Line with the Viking SLP-4 and Two C-500’s

The SLP-4 can be used with one or two Viking C-500 entry phone controllers. The phone line first runs through
the SLP-4, then runs through one or two C-500’s before continuing on to the house phones. Connect both C-500’s
“SLP Control” output terminals 18 & 19 to the SLP-4’s trigger input (CAUTION: This connection is polarity
sensitive.) When entry phone 1, 2, 3, or 4 call in, the SLP-4 will play its dip switch selected door chime. To provide
up to 4 different door chimes, the SLP-4’s “Doorbell Mode” dip switch must be turned ON. The C-500’s entry
phone ringing can be disabled by entering 0#62 in programming. IMPORTANT: See the SLP-4 Product Manual

for complete programming instructions (DOD 479).

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIG

GER

INPUT 1

10 11 12

TRIG

GER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

IN

PUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIG

GER

INPUT 1

10 11 12

TRIG

GER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

©

MODEL SLP-4

VIKING

ELECTRONICS

HUDSON, WI 54016

SINGLE LINE PAGING CONTROLLER

WITH FOUR RECORDABLE

TRIGGERED AUDIO CHIMES / MESSAGES

POWER

13.8 VAC

USB
LED

POWER MUTE AUDIO PAGE

PAGE TRIGGER

OUTPUT

WET

12VDC

DRY

N.C.

COM

N.O.

WAVE

FILE

INPUT

TRIGGERED AUDIO

CHIME/MESSAGE SELECTIONS

PER TRIGGER INPUT

DOORBELL MODE
ON HOLD ALARM
DIAL "9"

MUSIC ON

HOLD INPUT

TRIGGERED AUDIO

PLAYBACK VOLUME

PAGE

VOLUME

LOUD RINGING

VOLUME

2 WATT

AMP GAIN

+

1234

VIKING

CO LINE

INPUTGND

OUT TO
PHONES

USB

USB TRIG 1

TRIG 2 TRIG 3 TRIG 4

MSG

MSG MSG

MSG

POWER

PAGE
MUTE AUDIO PAGE

LOUD
RING

+ ­IO COM

+ SPK ­OUTPUT

C.O. /

Phone Line

*DIP Switch 1

must be ON

Standard
Analog Phone

To Additional
Standard
Analog Phones

To "Page" input on

your whole house

audio controller.

+ - + - + -

Unit 1

(Program: 1#49)

Model SLP-4 (not included,
see DOD 479 for more info)

Optional Second Unit

(Program: 2#48, 2#49)

Important:

1. It is not possible to remotely program the C-500’s or remotely access the C-500’s to enter operational
commands in this SLP-4 application. The SLP-4 interferes with these capabilities.

2. To locally program the C-500’s, the house phones must go off-hook and then hang up for a half second or
press the “flash” button on their phone. The C-500 will provide a single beep and they can then dial “Q#” plus the

six digit security code to locally program the C-500(s).

3. It is not recommended to use more than two C-500’s with the SLP-4.

5

D. Provide Paging with Four Unique Door Chimes and Control Up to 4 Entry Phones and Door

Strikes from a Single Phone Line with the Viking SLP-1 and Two C-500’s

The SLP-1 can be used with one or two Viking C-500 entry phone controller. The phone line first runs through the
SLP-1, then runs through one or two C-500’s before continuing on to the house phones. Connect both’s C-500’s

“SLP Control” output terminals 18 & 19 to the SLP-1’s “Doorbell Sw Input” input (CAUTION: This connection is
polarity sensitive.) When entry phones call in, the SLP-1 will play a “ding-dong” door chime for an entry phone 1

call and a “ding ding” door chime for an entry phone 2 call, a “ding-ding-ding” door chime for an entry phone 3
call and a “ding-ding-ding-ding” door chime for an entry phone 4 call. To provide the four different door chimes,
the SLP-1’s “Doorbell Mode” dip switch #2 must be ON. The C-500’s entry phone ringing can be disabled by
entering 0#62 in programming.

C.O. /

Phone Line

Music On Hold
Source (Radio)

1/8" (3mm) Double

Ended Audio

Cord (included)

To Optional

Speakers or

Paging Horns

To "Page" input

on your whole house

audio controller

DIP switch 2
must be ON

DOOR BELL

SW. INPUT

LOUD RING

ENABLE

- +

I.O. COM.

ON

1 2 3

PWR

PAGE MUTE

PAGE TRIG. OUT

C.O. LINE

INPUT

OUT TO
PHONES

- SPKR +
OUTPUT

LLRR

- +

VIKING

©

VIKING

ELECTRONICS

HUDSON,

WI

54016

SINGLE LINE

PAGING CONTROLLER

POWER 13.8 VAC

MODEL SLP-1

PREAMP
VOLUME

2 WATT

AMP GAIN

MIN

MAX

MIN

MAX

MUSIC

ON
HOLD
INPUT

AUDIO
INPUT

L R

AUDIO

OUTPUT

L R

+ -

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIG

GER

INPUT 1

10 11 12

TRIG

GER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIG

GER

INPUT 1

10 11 12

TRIG

GER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

Standard
Analog Phone

To Additional
Standard
Analog Phones

+ - + -

Unit 1

(Program: 1#49)

Model SLP-1

(not included
DOD 478)

Optional Second Unit

(Program: 2#48, 2#49)

Important:

1. Remote programming of the C-500’s is possible in this application. However, remotely accessing the C-500’s
to enter operational commands is not possible. The SLP-1 interferes with this capability.

2. To locally program the C-500’s, the house phones must go off hook and then hang up for a half second or
press the “flash” button on their phone. The C-500 will provide a single beep and they can then dial “Q#” plus

the six digit security code to locally program the C-500’s.

3. It is not recommended to use more than two C-500’s with the SLP-1.

E. Using the C-500 with the CTG-1, CTG-2 or a Toggle Switch for Immediate Call Forwarding at

Certain Hours of the Day (##4 must be programmed)

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

Model CTG-1 (DOD 460) with CTGF-BKD Software

or Model CTG-2 (DOD 463)

PM

TIME

/

CANCEL

-

+

MODE

ALERT TONES

SINGLE

DOUBLE

TRIPLE

VIKING ©

MODEL CTG-1

LOCK

SET DAY

SET TIME

SET EVENTS
REVIEW/CANCEL

CLOCK CONTROLLED

TONE GENERATOR

VOL

9V BATTERY

BACKUP

123456789101112

OR

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

P

H

ONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

or

Standard

Analog

Phones

Unused Line /
Trunk Input on
Phone System

(PABX/KSU)

13.8V AC
Adapter

included

120V AC

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

STAND-ALONE

DOOR CONTROLLER

ENTRY SYSTEM

VIKING

PROGRAM

PHONE

GANG
PROG

COMM

ELECTRONICS

HUDSON, WI 54016

VIKING

©

MODEL ES-1

POWER 12 VDC

BLK

RED

GRN

WHT

ENTRY POINT

WIEGAND

DEVICE

LOG
BUS

Viking PRX-1 Proximity Card Reader

(shown, not included, DOD 221)

OR

Viking PRX-2 Card Reader/Keypad (DOD 219)

Viking PRX-3 Card Reader (DOD 228)

Viking PRX-4 Keypad (DOD 199)

and/or

(Power typically
not required for

gate controllers)

Door Strike/

Magnetic Lock

5A@30VDC/

250VAC

maximum

Viking E-70 Entry Phone

(shown, not included, DOD 207)

OR

Viking E-75 Entry Phone

(not included, DOD 208)

Step 1 Program the ES-1 “Relay Activation Time” to match the “Door strike Activation Time” on the C-500.

Step 2 Connect the ES-1 relay output in parallel with the door strike output contacts on the C-500.

F. Using the C-500 with an ES-1 to Control a Proximity Card Reader or a Keyless Entry Keypad

Step 1

Connect the power, required entry phones
and door strike outputs (if required) as
shown in section A.

Step 2

Connect an analog phone or unused phone
system (PABX/KSU) line /trunk port to
terminals 3 & 4, “LINE OUT TO PHONES” on
the C-500.

Step 3

Access programming as shown in section 2
on page 7. Enter Q5, two beeps should be

heard.

Step 4

Enter additional desired programming, then
hang-up the phone and place DIP switch 1
back to the OFF position.

G. Using the C-500 Without a C.O. Line

The C-500 can also be used without a C.O. line. This is
ideal for connecting the C-500 to an unused trunk/line
input of your phone system or connecting to phones
used only for doorbox communication.

6

1. Accessing the Programming Mode Locally with a Security Code

Step 1 Come off-hook with any house phone (device) connected to terminals 3 & 4, LINE OUT TO PHONES.

Step 2

Hookswitch flash the house phone, a single beep will be heard, then enter Q# followed by the 6-digit
security code (factory set to 845464, V-I-K-I-N-G, see Quick Programming Features page 8).

Step 3 A double beep will indicate that you have accessed the programming mode.

Step 4 You can now touch tone program the features listed in Quick Programming Features page 8.

Step 5 When finished programming, hang up.

Accessing Programming

7

3. Accessing the Programming Mode Remotely with a Security Code

2. Accessing the Programming Mode Locally Without a Security Code (Security Code Bypass Mode)

Step 1 Move DIP switch 1 to ON (Security Code Bypass Mode, see DIP Switch Programming page 15).

Step 2 Come off-hook with any house phone connected to terminals 3 & 4, LINE OUT TO PHONES.

Step 3 A double beep will indicate that you have accessed the programming mode.

Step 4 You can now touch tone program the features listed in Quick Programming Features page 8.

Step 5 When finished programming, hang up and move DIP switch 1 to the OFF position.

Step 1 Call into the C-500 from a touch tone phone.

Step 2

After the incoming ring count is met (factory set to 10), the C-500 will answer the line and output a
single beep.

Step 3

Enter Q# followed by the six digit security code (factory set to 845464, see Quick Programming
Features page 8).

Step 4 A double beep will indicate that you have accessed the programming mode.

Step 5 You can now touch tone program the features listed in Quick Programming Features page 8.

Step 6 When finished programming, hang up.

Note: Programming from a cell-phone may not be suitable in areas with weak coverage.

Note: This mode is useful if you have forgotten your security code or for programming the C-500 without a

telephone line connected.

4. Accessing the Programming Mode Remotely Without a Security Code (Security Code Bypass Mode)

Step 1 Move DIP switch 1 to ON (Security Code Bypass Mode, see DIP Switch Programming page 15).

Step 2 Call into the C-500 from a touch tone phone.

Step 3

After one ring, the C-500 will answer the line and beep two times indicating the C-500 is in the
programming mode.

Step 4 You can now touch tone program the features listed in Quick Programming Features page 8.

Step 5 When finished programming, hang up and move DIP switch 1 to the OFF position.

Note: This mode is useful if you have forgotten your security code for programming the C-500. In multi-unit
applications, each unit must be set to Security Code Bypass Mode (DIP switch 1 ON) one at a time and a new call
must be made for each C-500.

Initial Programming: The Learn Mode switch is provided to allow programming an individual unit no matter what
the previous programming selections have been. When there are multiple units connected together, it is important
that only one unit at a time has it’s Learn Mode switch on. This is because the unit with the Learn Mode switch on
is the one that will answer incoming calls, or automatically switch to the internal line with outgoing calls. If you are
remotely programming units, start with the unit closest to the phone line. If you are locally programming, start with
the unit closest to the house phone. As each unit is programmed, hang-up, turn off that unit’s Learn Mode switch
and proceed with the next unit until all are programmed.

Note: Limit the use of the learn mode to initial programming if possible. Once the C-500’s are in operation,
immediate call forwarding on some C-500’s can accidentally be turned off when local programming is accessed,
a C-500 has the learn mode switch on and “###” is the first command dialed by the house phone. If the learn
mode must be used, wait 5 seconds or more after picking up the house phone before dialing the “###” command
to default the selected C-500. This 5 second delay will prevent other C-500’s from turning off immediate call
forwarding.

Previously Programmed: If the total number of units (#48) and the Unit number (#49) are already programmed
for each unit, then any other programming features can be easily changed. Either call into the units or come off
hook with the House phone and enter “Q#” followed by the security code. After the beep, enter the unit number
you would like to program (1-4). You will then hear two beeps indicating you have accessed the programming
mode of the selected unit. After programming that unit, enter ##7 to get back to the unit selection level. A single
beep will be heard and you can now select another unit (1-4) to program or enter # to quit.

5. Programming Multiple Units

8

Description Enter Digits + Location

Entry phone 1 first call forward number ............................................................................... 1-20 digits (0-9) + #00

Entry phone 1 second call forward number ......................................................................... 1-20 digits (0-9) + #01

Entry phone 1 third call forward number ............................................................................. 1-20 digits (0-9) + #02

Entry phone 1 fourth call forward number ........................................................................... 1-20 digits (0-9) + #03

Entry phone 1 fifth call forward number ............................................................................... 1-20 digits (0-9) + #04

Entry phone 2 first call forward number ............................................................................... 1-20 digits (0-9) + #05

Entry phone 2 second call forward number ......................................................................... 1-20 digits (0-9) + #06

Entry phone 2 third call forward number ............................................................................. 1-20 digits (0-9) + #07

Entry phone 2 fourth call forward number ........................................................................... 1-20 digits (0-9) + #08

Entry phone 2 fifth call forward number ............................................................................... 1-20 digits (0-9) + #09

To clear any call forward speed dial number ....................................................................... (no digits) + #00-#09

Privacy number (factory disabled) ....................................................................................... 0-6 digits (0-9) + #10

Entry phone 1 keyless entry codes (factory disabled) ......................................................... 4-6 digits (0-9) + #11-#16

Entry phone 1 keyless toggle entry code (factory disabled) ................................................ 4-6 digits (0-9) + #17

Entry phone 1 keyless one time use codes (factory disabled) ............................................ 4-6 digits (0-9) + #18-#19

Entry phone 2 keyless entry codes (factory disabled) ......................................................... 4-6 digits (0-9) + #21-#26

Entry phone 2 keyless toggle entry code (factory disabled) ................................................ 4-6 digits (0-9) + #27

Entry phone 2 keyless one time use codes (factory disabled) ............................................ 4-6 digits (0-9) + #28-#29

Entry phone 1 caller ID, see section 5 on page 10 (factory set to “Entry Phone 1”)

.............

0-15 two digit
characters

+ #30

Entry phone 2 caller ID, see section 5 on page 10 (factory set to “Entry Phone 2”)

.............

0-15 two digit
characters

+ #31

Door strike relay command (blank = disabled, QQ = Q, QQQQ = QQ, 0-9 or 00-99,

factory set to QQ) ...............................................................................................................

1 or 2 digits + #32

Relay activation tone (buzz) volume (0 = off, 3 = maximum, factory set to 2) ..................... 0 - 3 + #33

Single entry dual door strike mode** (factory disabled/blank, 00 = no delay, 01-99 sec) .... 00 - 99 + #34

Door strike 1 activation time (00 = .5 sec, factory set to 5 sec) ........................................... 00 - 99 sec + #40

Door strike 2 activation time (00 = .5 sec, factory set to 5 sec) ........................................... 00 - 99 sec + #41

Call forward maximum call time (0 = 30 sec, blank = disable, factory set to 3 mins) .......... 1 - 9 mins + #42

Call forward maximum ring time (00 = disabled, factory set to 30 sec) ............................... 01 - 60 sec + #43

Maximum ring count from entry phone before call forward* (0=immediate call forward,

factory set to 4) ....................................................................................................................

0 - 9 + #44

Incoming ring count before auto answer*

(00 or blank = disables auto answer, factory set to 10) 01 - 99 + #45

Access code (blank = disabled, factory set to 123456) ....................................................... 6 digits + #46

Security code (factory set to 845464) .................................................................................. 6 digits + #47

Total number of units (factory set to 1) ................................................................................ 1 - 4 + #48

Unit number (factory set to 1) .............................................................................................. 1 - 4 + #49

Enable/disable Immediate Call Forward command (0 = disable, 1 = enable, factory set 1) 0 or 1 + #61

Enable/disable Entry phone ringing (0 = disable, 1 = enable, factory set to 1) ................... 0 or 1 + #62

Analog Station Mode (0 = disable, 1 = enable, factory set to 0) .......................................... 0 or 1 + #63

Flash required before outgoing off-hook operation commands (0 = disable, 1 = enable,

factory set to 0) ....................................................................................................................

0 or 1 + #64

Entry phone chime control mode** (0 = disable, 1 = enable, factory set to 0) .................... 0 or 1 + #65

Quick Programming Features (after accessing the Programming Mode)

* Caution: In multi-unit applications, the incoming ring count for auto answer (01-99 #45) must be programmed to the same number in each
unit and must be programmed higher than the maximum ring count from the entry phone before call forward (0-9 #44).

** Note: “Single Entry Dual Door Strike Mode” is not compatible with “Entry Phone Chime Control Mode”. A three beep error will be heard in
programming if you attempt to enable both modes.

9

Description Enter Digits

Enable door strike latching and toggle commands (factory setting) .................................................................

Q1

Disable door strike latching and toggle commands ..........................................................................................

Q2

Entry phone calls give custom ring cadence (factory setting) ..........................................................................

Q3

Entry phone calls give standard ring cadence (2 sec on, 4 sec off) .................................................................

Q4

Dial “9” to access an outside line (gives a single beep on off-hook to remind user) ........................................

Q5

Instant outside line access (factory setting) .....................................................................................................

Q6

To add a 4 - 6 sec pause anywhere in the dialing string ..................................................................................

Q7

To add a 1 sec pause anywhere in the dialing string ........................................................................................

Q8

Enable Entry phone identifier beeps (factory setting) .......................................................................................

Q9

Disable Entry phone identifier beeps ................................................................................................................

Q0

To add a “Q” to dialing string, privacy number, keyless code or strike command ............................................

QQ

To add a “#” to dialing string .............................................................................................................................

Q#

Ignore touch tones for programming Entry phone 1 ......................................................................................... ##1

Ignore touch tones for programming Entry phone 2 ......................................................................................... ##2

Trigger inputs activate door strike relays (factory setting) ................................................................................ ##3

Trigger input 2 enables immediate call forwarding when triggered *** ............................................................. ##4

# conflict mode ON (Note: Should only be programmed on the first unit in multi unit applications) ................ ##5

# conflict mode OFF (factory setting) ............................................................................................................... ##6

Exit programming ............................................................................................................................................. ##7

Reset all programming to factory default settings**** ....................................................................................... ###

*** Caution: With ##4 programmed,

QQQ

and ### operation commands will be disabled.

**** Note: Excluding #45, #48, and #49 with 2-4 #48 programmed.

The C-500 can be programmed to dial up to 5 different telephone numbers from each entry phone. Entry phone
1’s first call forwarding speed dial number is stored in location #00 and is the first outside number that will be
dialed if entry phone 1 goes off hook and the house phone does not answer within the ring count set by
programming location #44. Additional speed dial numbers will be dialed if there is no answer or a busy at the first
number. Each number is called only once. If all numbers are called without an answer, the C-500 will generate a
CPC signal and then a busy signal will be sent to the door phone. To clear a speed dial number position, simply
enter a # and the location number (00 to 09), without any preceding numbers. If no numbers are programmed,
the C-500 will only call the house phone. To program a 4 to 6 second pause in the dialing string enter “Q7”. To
program a 1 second pause enter “Q8”. To program a Q or # in the dialing string enter “QQ” or “Q#”.

Note 1: Up to 20 digits can be stored in each dial position. Special features such as one and four to six second
pauses, and touch tone

Q

and # count as a single digit.

Note 2: When installing a C-500 on a phone system station port with automatic call routing, a one second pause
(Q8) must be programmed in memory locations #00 and #05.

1. Call Forwarding Speed Dial Numbers (#00 – 09)

Programming Features

The “Privacy Number” is factory disabled so an entry phone off-hook will automatically ring the house phones. If
a “Privacy Number” is programmed, the visitor must touch tone dial the number to be able to call into the house.
The “Privacy Number” may be from 1 to 6 digits and is stored in location “#10”. To disable the “Privacy Number,”
clear the number’s memory location by entering “#10” without any previous digits.

Note: When a “privacy” number has been programmed, a visitor should know and dial the correct privacy number
in order to ring the house (or remote) phones. If an entry phone is activated and has dialed no touch tones or has
only partially entered the privacy number and the house phones pick up, the entry and house phone are connected
together.

2. Privacy Number (#10)

10

Each entry phone may have a combination of up to 6 keyless entry codes and 2 one time use keyless entry codes
for touch tone keyless entry. The keyless entry codes may be from 4 to 6 digits in length and are stored in locations
#11 - #16 for entry phone 1 and #21- #26 for entry phone 2. To clear any keyless entry codes, simply enter the
location number (ie: “#11”) without any previous digits.

3. Keyless Entry Codes and One Time Use Keyless Entry Codes (#11-16, #18-19, #21-26, #28-29)

Each entry phone may have 1 keyless toggle entry code for toggling the door strike relay on or off. The toggle
codes may be from 4 to 6 digits in length and are stored in location #17 for entry phone 1 and #27 for entry phone

2. To clear any toggle codes, simply enter the location number (ie: “#17”) without any previous digits.

4. Keyless Toggle Entry Code (#17, #27)

The C-500 is factory set to send “Entry Phone 1” or “Entry Phone 2” Caller ID data to the house phones when
the corresponding entry phone is activated. The entry phone caller ID is programmable by entering a string of up
to 15 two digit numbers into programming location #30 for entry phone 1 and #31 for entry phone 2. Use the chart
below to enter the two digit number that represents the character to be programmed. To disable Caller ID simply
enter the programming location number #30 and #31 without any previous digits.

Note: In multi-unit applications, the entry phone number portion of the caller ID messages automatically change
when the C-500 is programmed to be unit 2, 3 or 4. For example, when a C-500 is programmed to be unit 2
(2#49), the entry phone caller ID messages automatically change to “Entry Phone 3” and “Entry Phone 4”.

5. Entry Phone Caller ID (#30, #31)

Entry Phone 2 CID Characters:

___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

Two Digit Numbers:
__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ #31

Entry Phone 1 CID Characters:

___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

Two Digit Numbers:
__ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ #30

2 Digit

Number

Character

00 (space)
01 !
02 “
03 #
04 $
05 %
06 &
07 ‘
08 (
09 )
10 *

11 +
12 ,
13 ­14 .
15 /
16 0
17 1
18 2

2 Digit

Number

Character

19 3
20 4
21 5
22 6
23 7
24 8
25 9
26 :
27 ;
28 <
29 =
30 >
31 ?
32 @
33 A
34 B
35 C
36 D
37 E

2 Digit

Number

Character

76 l
77 m
78 n
79 o
80 p
81 q
82 r
83 s
84 t
85 u
86 v
87 w
88 x
89 y
90 z
91 {
92 |
93 }
94 ~

2 Digit

Number

Character

57 Y
58 Z
59 [
60 \
61 ]
62 ^
63 _
64 `
65 a
66 b
67 c
68 d
69 e
70 f
71 g
72 h
73 i
74 j
75 k

2 Digit

Number

Character

38 F
39 G
40 H
41 I
42 J
43 K
44 L
45 M
46 N
47 O
48 P
49 Q
50 R
51 S
52 T
53 U
54 V
55 W
56 X

Caller ID Programming Chart

Caution: Some Caller ID displays may not be compatible with certain characters.

The one or two digit code stored in the Door Strike Command is the touch tone command that the person being
called must enter on their touch tone phone in order to actuate the door strike. The command can contain the
numbers 1 to 9, 0, Q, # or any one or two digit combination. To disable this feature enter #32 without any preceding
digits. The door strike command must be entered while the house phone or the remote phone is connected to the
door phone.

The C-500 determines which direction the touch tone is coming from and only responds to touch tones from the
called phone. The factory setting is “QQ”

Note: Avoid programming the Door Strike Command to “Q1”, “Q0”, “Q2” or “#”, as these are fixed commands.
When the Door Strike Command and a fixed command match, the fixed command will no longer work while talking
to an entry phone, unless “#1” or “#2” (entry phone 1 or 2) is dialed before the fixed command.

6. Door Strike Command (#32)

The relay activation tone is a buzzing sound that is heard on the entry phone when the door strike relay is activated.
The tone length will match the door strike activation time up to a maximum of 5 seconds. The tone can be
programmed to three different volume settings 1 = Low, 2= Medium, 3 = High in memory location #33. The tone
can also be disabled by entering 0#33.

7. Relay Activation Tone (Buzz) Volume (#33)

8. Single Entry Dual Door Strike Mode (#34)

When only a single entry phone is used, the C-500 can be programmed to activate both of its door strike relays
simultaneously or with a programmable delay before the second door strike relay is activated. This is useful in a
vestibule or larger entryways with both outside and inside locked doors. A delay can be programmed allowing the
visitor enough time to get to the second door before activating the second door strike. Connect the entry phone
to the Entry Phone 1 terminals (5 and 6). When the entry phone is activated and the person that answers dials
the door strike command, door strike relay 1 will activate first then after the programmed delay, the door strike 2
relay will activate. If a request to exit switch is needed, it should be connected to the trigger 2 input (see note 4
below). When the request to exit switch is activated, the door strike 2 relay will activate first, then after the
programmed delay, the door strike 1 relay will activate. If an access control system or a manual switch needs to
activate the door strike 1 relay first, delay and then activate the door strike 2 relay, wire the access control system
or switch to the trigger 1 input. This delay can be programmed from 1 to 99 seconds by entering 01 -99 into #34.
Both door strike relays can be simultaneously activated without any delay by programming 00#34. This feature
can be disabled by entering #34 without any preceding digits.

Notes:

1. The “Single Entry Dual Door Strike Mode” is not compatible with the “Entry Phone Chime Control Mode”. A 3

beep error will be heard in programming if you attempt to enable both modes.

2. If a delay is programmed,the delay time starts when the first door strike relay is activated and finishes when
the second door strike relay is activated. The door strike activation time has no effect on this delay time.

3. If a latch, unlatch or toggle relay command is dialed, both door strike relays immediately latch, unlatch or toggle
without any delay.

4. To use trigger 2 input as a request to exit input, dip switch 2 must be OFF and “##3” (trigger inputs activate
door strike relays) must be programmed.

11

The value stored in the Door Strike Activation Time is the amount of time the door strike relay will be energized
after a correct touch tone command is entered or the trigger input is activated. This two digit number can range
from 01 to 99 seconds, or enter 00 for 0.5 seconds. The factory setting is 5 seconds.

9. Door Strike Activation Time (#40, #41)

The Call Forward Max Call Time can be used to cut off a call that has rolled over to an outside number. The timer
starts as soon as the call is answered. If the call lasts longer than the time programmed, the phone line will be
dropped and a busy signal will be sent to the entry phone. This is useful if a standard telephone is being used for
an entry phone and the handset is accidentally left off hook. The Call Forward Maximum Call time does not apply
to the Analog Station Mode (there is no time limit for entry phone calls in that mode). This one digit number can
range from 1 to 9 minutes or enter 0 for 30 seconds. To disable this feature enter #42 without any preceding digits.
The factory setting is 3 minutes.

10. Call Forward Maximum Call Time (#42)

12

After the C-500 dials an outside number, it listens to the phone line for busy, ringing, or someone answering at
the other end. The Call Forward Max Ring Time is used to limit this process in the event that the C-500 cannot
determine if the call has been answered. If the C-500 cannot determine that the call has been answered within
the “Call Forward Max Ring Time”, the line will be disconnected and the C-500 will go onto the next speed dial
number. This two digit number can range from 01 to 60 seconds and can be disabled by entering 00#43. As a
general rule, allow 6 seconds for each ring you desire at the distant phone. The factory setting is 30 seconds or
about 5 rings.

11. Call Forward Maximum Ring Time (#43)

When the entry phone comes off hook, the C-500 will start ringing the house phone. The number of times the
house phone will ring is stored in location #44. This value can range from 1 to 9. If 0 is entered, the C-500 will skip
ringing the house phone and immediately start calling the programmed phone numbers. This feature is useful
when the user is not at home and they want the fastest connect time to their cell phone. There is also an
operational command of “QQQ” (see Operation section B) and a trigger input (see Operation section B) that can
be used for immediate call forwarding. Factory set to 4.

12. Maximum Ring Count from Entry Phone before Call Forward (#44)

The 2 digit number in this location determines how many times a call coming in from the phone line will ring the
house phones before the C-500 answers the call. This number can range from 01 to 99, if blank or 00, the Auto
Answer feature of the C-500 will be disabled. The factory setting is 10. Note: In multi-unit applications, each C-

500 must be programmed to the same incoming ring count.

13. Incoming Ring Count (#45)

The security code must be 6 digits long and cannot contain a “Q” or “#”. The factory default code is “845464” and
can be changed in programming by entering 6 digits followed by “#47”.

15. Security Code (#47)

The Access Code is used for operating the relays or monitoring an entry phone by calling into the C-500. This
code provides basic security and only allows operation of the relays or entry phone monitoring and not the ability
to change any of the programming parameters. Once entered, any of the Remote Access Operation Commands
can be used.The code is not necessary in the Analog Station mode. The code must be 6 digits long and cannot
contain a “Q” or “#”. Simply call the C-500, the unit will automatically answer the line after the programmed
maximum ring count and output a single beep. You then enter the programmed 6 digit access code, 2 beeps
should be heard. You can now enter any “Remote Access Operation Commands” (see page 19). If no security is
needed, the Access Code can be disabled by entering #46 without any preceding digits. When the C-500 answers
(single beep), users can then dial Remote Access Operation Commands without dialing an Access Code first.

14. Access Code (#46)

When using multiple C-500’s on a single phone line (up to 4 units total with up to 8 entry phones), the “Total
Number of Units” (1-4 #48) must be programmed separately in each unit. The “Unit Number” should then be
programmed separately in each unit (see Programming section 17).

Caution: In multi-unit applications, the incoming ring count for auto answer (01-99 #45) must be programmed to
the same number in each unit and must be programmed higher than the maximum ring count from the entry phone
before call forward (0-9 #44).

16. Total Number of Units (#48)

When using multiple C-500’s on a single phone line (up to 4 units total with up to 8 entry phones), after the “Total
Number of Units” (1-4 #48) has been programmed, the “Unit Number” (1-4 #49) must then be programmed
separately in each unit. The unit connected to the incoming phone line must be programmed as unit 1. The
remaining units must be programmed in numerical order (see Installation section B).

Caution: In multi-unit applications, the incoming ring count for auto answer (01-99 #45) must be programmed to
the same number in each unit and must be programmed higher than the maximum ring count from the entry phone
before call forward (0-9 #44).

17. Unit Number (#49)

If touch tones “

QQQ”

conflict with your phone system, the immediate call forward operation command (

QQQ

) can

be disabled by entering 0#61 in programming.

18. Enable/disable Immediate Call Forward command (#61)

13

The C-500’s entry phone ringing can be disabled. Disabling the ring can be useful when using a C-500 with a
Viking SLP-1 or SLP-4 which can supply chimes over a whole house audio system when an entry phone is

activated. Disabling the ring can also be useful when using the C-500 in the “Entry phone chime control mode” to
activate your door chime when an entry phone is activated. See Programming section 22.

19. Enable/disable Entry Phone Ringing (#62)

In this mode, when an entry phone is activated the C-500 accesses the analog PABX extension or telephone line
it is connected to and speed dials the first call forwarding number (see Note 1 below) programmed for that entry
phone. When the remote party answers the call, they can dial a touch tone command to activate the door strike
relay. If one of the Viking K-series or E-series entry phones is using the line and a second entry phone goes off
hook, the second entry phone will not function until the first entry phone hangs up (see Note 2 below). In this
mode, custom ring cadence from the Entry Phone is not compatible, no caller ID data is generated by the controller
and entry phone calls are not timed (the “Call Forward Maximum Call Time” will not function in the Analog Station
Mode). If the C-500 is programmed to answer inbound calls (see note 3), monitoring an entry phone or forcing a
door strike relay to operate is accomplished by calling the analog PBX extension or telephone line connected to
the C-500, the unit will immediately answer and provide a single beep. You can then dial #1 - #8 to monitor a
specific entry phone or enter a valid Remote Access Operation Command. Remote programming of the C-500
and any of the Viking hands-free entry phones connected (see Programming section 27) is also possible in this
mode, if the C-500 is programmed to answer inbound calls. Touch tone keyless entry codes can also be
programmed per entry phone to provide keyless entry.

Notes:

1. If a call forwarding number is not required because the PBX extension or telephone line is programmed for

automatic call routing or “ringdown”, program a one second pause (

Q

8) into memory locations #00 and #05.

Without a call forward number or pause programmed, the entry phones will get a 3 beep error when activated.

2. In multi-unit applications, if the entry phone from one C-500 is using the line and an entry phone from another
C-500 is activated, the second entry phone may experience one ring and then be hung up or silence until the line

is available. This is a limitation of the multi-unit mode. See Operation section K. Limitations for more details
(item # 9).

3. If the C-500 is connected to a shared PBX extension or telephone line and the C-500 answering inbound calls
is not desirable, disable the C-500 auto answer by programming the incoming ring count before auto answer to
“00” (“00#45”). The entry phones can still make outgoing calls but the C-500 will ignore inbound calls.

4. For a list of operational differences in the Analog Station Mode, see Operation section J. Analog Station Mode
Operational Differences.

20. Analog Station Mode (#63)

If the C-500’s “Outgoing Off-Hook Operation Commands” conflict with your phone line or phone system, you can
program the C-500 to require a 0.5 second hookswitch flash from the phone prior to entering the commands. This
can be enabled by entering “1#64” and disabled by entering “0#64” in programming. Note: This feature is not

compatible with Analog Station Mode. In multi-unit applications, all units must be programmed with “1#64” for this
feature to work correctly.

Notes:

1. This feature is not compatible with the Analog Station Mode.

2. In multi-unit applications, all units must be programmed with “1#64” for this feature to work correctly.

3. When the “dial 9 to access an outside line” mode is programmed (“Q5”), the C-500 will accept the Outgoing
Off-Hook Commands without a hookswitch flash first, even though “1#64” is programmed.

21. Flash Required before Outgoing Off-Hook Commands (#64)

22. Entry Phone Chime Control Mode (#65)

If door strike relay latching and toggle commands are not required, they can be disabled by entering (Q2) in
programming. Disabling these commands can be useful if you want to eliminate any chance of inadvertently
latching open a door or gate.

23. Enable/Disable Door Strike Latching and Toggle Commands (Q1, Q2)

With the C-500’s “Entry Phone Chime Control Mode” enabled (1#65), door strike relay 2 will actuate whenever an
entry phone is activated. Connect a door bell or chime (and power supply) to the normally open door strike 2
contacts. The door strike relay will energize for the programmed “Door Strike 2 Activation Time” See Programming
section 9. To enable this mode enter “1#65” in programming. To disable this mode enter “0#65” in programming.

Note: “Entry Phone Chime Control Mode” is not compatible with “Single Entry Dual Door Strike Mode”. A 3 beep
error will be heard in programming if you attempt to enable both modes.

14

Entry phone calls are factory set to ring the line out to phones port in 4 different custom ring cadences. This is
useful to help distinguish which entry phone is calling in. With entry phone custom ring cadence enabled
(Q3/factory setting) entry phone calls will ring in the following cadence; Entry phone 1: Double ring, Entry phone
2: Triple short-short-short ring, Entry phone 3: Triple short-short-long ring, Entry phone 4: Triple short-long-short
ring. When using four C-500’s on a single line, entry phones 5 - 8 will have the same ring cadence as entry
phones 1 - 4.The C-500 can be programmed to give a standard ring cadence for entry phone calls (2 seconds of
ring, and 4 seconds off between rings) by entering “Q4” in programming. Entry phone ringing can also be disabled
by entering “0#62”. This is useful when connecting the C-500 to a SLP-1 or SLP-4 to provide unique front and
back door chimes over your whole house audio system.

24. Entry Phone Call Ring Cadence (Q3, Q4)

1. Dial “9” to Access the Outside Line - To program the C-500 for C.O. dial tone, enter “Q5” while programming.

To gain access to C.O. dial tone, dial a touch tone “9”. Note: “Q5” must be programmed when connecting a C-
500 to an unused phone system trunk/line input and no C.O. line is connected to the C-500.

2. Instant Outside Line Access (factory default) - To program the C-500 for private dial tone, enter “Q6” while

programming. House phones will instantly have the outside line dial tone on an off-hook.

25. Outside Line Access, Dial “9”/ Instant (Q5, Q6)

With “Q9” programmed, when an entry phone call is answered 1 or 2 beeps (up to 8 beeps with multiple C-500’s)
will be heard to identify which entry phone is calling in. This can be disabled by entering “Q0” in programming.

NOTE: No entry phone identifier beeps are provided on call forwarded calls.

26. Enable/Disable Entry Phone Identifier beeps (Q9, Q0)

This feature is useful if you have an entry phone that requires touch tone programming and can answer a ringing
line after 1 ring. All Viking Handsfree Entry Phones have this capability. After entering the programming mode, if
##1 or ##2 is entered, the C-500 will send a ring signal to the entry phone port 1 or 2 respectively. If the device
on that port answers the line, the C-500 will connect it to the party programming (local or remote). If the entry
phone does not answer, 3 beeps will be heard and the C-500 will stay in the programming mode. Once the party
programming is connected to an entry phone, the C-500 ignores touch tones (but each touch tone dialed resets
the 20 second programming timer) except for the “##7” hang up command. When the 20 second programming
timer elapses or “##7” is detected, the C-500 hangs up the entry phone and immediately exits the program mode.

Note: When using the “##1” and “##2” commands to program the entry phones, only one entry phone can be
programmed at a time (either locally or remotely). When finished programming one entry, you must hang up (or
dial “##7” and hang up), access the program mode of the C-500 again and dial ##1 or ##2 to program the other
entry phone. This is also true in multi-unit applications. There is no way to dial “##7” and get back to C-500
programming or the unit selection level.

27. Ignore Touch Tones for Programming Entry Phones (##1, ##2)

The C-500 has two Trigger Inputs that can be used for external Postal Lock switches or Request to Exit (REX)
switches, when dip switch 2 is OFF ( Doorbell Mode Disabled). The switches must have a momentary, normally
open contact. With “Trigger Inputs Activate Relays” (##3) programmed, when the C-500 detects a contact closure
on trigger input 1 or 2, the corresponding door strike relay will be energized for the amount of programmed Door
Strike Activation Time.

With “Trigger Input 2 Enables Call Forwarding” (##4) programmed, Trigger input 2 now controls whether or not
the house phone will ring when either entry phone goes off hook. If Trigger Input 2 is shorted, the house phone
ringing will be skipped (Immediate Call Forward Mode), if Trigger Input 2 is open, the C-500 will ring the house
phone when either entry phone goes off hook. The “##4” mode can be useful when using a Viking model CTG-
1 (with CTGF-BKD software) or CTG-2 to automatically forward entry phone calls at certain times of the day.

Note: With ##4 programmed, trigger input 2 cannot be used for activating door strike relay 2.

28. Trigger Inputs Activate Relays (REX)/ Trigger Input 2 Enables Call Forwarding (##3, ##4)

If the Outgoing Off-Hook Operation Commands don’t work from a house phone, the “#” as the first digit of an
operation command may conflict with your cable company provided modem. If so, the “# Conflict” mode can
be enabled. With ##5 programmed and “#” is the first digit dialed by a house phone, the C-500 immediately
switches the house phone to an artificial line, which allows the Outgoing Off-Hook Operation Commands to
work properly. The “# Conflict” mode can be disabled by entering “##6” in programming. Note: The “# Conflict”

mode should only be programmed on Unit #1 in multi-unit applications.

29. # Conflict Mode On/Off (##5, ##6)

Notes:

1. The house phones have different options available when they hear the call waiting tone. They have the ability to operate a door

strike relay without ever leaving the C.O. call. For example, if they have a camera system installed, can see the visitor at the door
and want to let them in right away, they can dial #1 or #2 (depending on the entry phone activated) plus the 1 or 2 digit door strike
command. The appropriate door strike relay operates and they remain on their C.O. call.

2. If the house phone simply dials a 1 or 2 digit door strike command, the house phone is disconnected from the entry phone after
the door strike operates. If the house phone would like to remain connected to the entry phone after the door strike command is
dialed (they would like to make sure the visitor gets in the door for example), they can dial “#” plus the entry phone number (1 to

8), then “QQ” for timed relay activation, a latch or unlatch command or any other Operation Command.

3. The call waiting “tone” the house phones hear from the C-500 when an entry phone is ringing is actually a short duration
ringback tone.

4. If an entry phone call has call forwarded out on the CO line (after ringing the house phones or immediately) and the house
phones go off hook, this is what the house phones will receive:

a. If the forwarded call has not been answered yet – the house phone and entry phone are connected together and the call
forward is stopped (the CO line is hung up).

b. If the forwarded call has already been answered – the house phones receive three busy signals and then silence (the
entry phone remains connected to the remote party).

5. Entry phone calls will ring through to the house phones with a higher priority than outside CO calls, even when the CO line was
ringing first. For example, a CO call is ringing the house phones but has not been answered yet. A visitor activates entry phone 1
and the house phones are switched to the entry phone ringing from entry 1. When the house phones answer the entry phone call,
the house phones hear a call waiting tone (single beep) every 12 seconds to remind them the CO line is ringing in.

6. No entry phone Caller ID information or identifier beeps are provided on call forwarded calls.

15

Dip Switch Programming

This mode is useful for entering programming without a security code or programming the C-500 without a telephone line connected.
See “Accessing the Programming Mode Locally/Remotely” (Security Code Bypass Mode) section 2 and 4 on page 7.

A. Learn/Security Code Bypass Mode (Dip Switch 1 – ON)

With the C-500 in the doorbell mode (DIP switch 2 ON), a normally open switch
(SPST 6-16V lighted or non-lighted doorbell button, etc.) can be connected to
trigger input 1 or 2. The switches should be located near entry phone 1 or 2. A
momentary closure on either of the C-500’s trigger inputs will call the
corresponding entry phone. The entry phone will automatically answer (see the
Product Manual for your entry phone to enable auto answer) and begin ringing the
house phones (LINE OUT TO PHONES). The house phones can then be
answered, door strike commands entered, etc. (see Operation sections A-K).

Notes: Entry phones ringing the house phones can be disabled in this doorbell
mode, if it is desirable to have the doorbell chime but not ring the house phones .
Program the C-500 with “0#62” (disable entry phone ringing). To control the chime,
“Entry Phone Chime Control Mode” must be enabled “1#65”. See Programming
section 22. When the doorbell chimes, picking up a house phone will instantly
connect the house phone to the entry phone.

B. Doorbell Mode (Dip Switch 2 - ON)

VIKING©

VIKING

ELECTRONICS

HUDSON,

WI

54016

ADVANCED 2 DOOR ENTRY PHONE

CONTROLLER WITH CALL FORWARDING

POWER 13.8V AC

MODEL C-500

PHONE LINE

INPUT

LINE OUT

TO PHONES

1234

ENTRY

PHONE 1

56 789

DOOR

STRIKE 1

N.C.

N.O.

COM

ENTRY

PHONE 2

13 14

SLP

CONTROL

18+19

TRIGGER

INPUT 1

10 11 12

TRIGGER

INPUT 2

15 16 17

DOOR

STRIKE 2

N.C.

N.O.

COM

12

ON

ON

OFF

Operation

A. Visitors

When a visitor presses the call button (comes off hook) on the entry phone, the C-500 will begin ringing the house phones
with a distinctive ring cadence to identify it as an entry phone call and entry phone “Caller ID” information is sent. If a house
phone is on a C.O. call, a call waiting tone will be heard every 12 seconds. A touch tone “#” from the house phone will put
the C.O. call on hold and connect the house to the entry phone (see note 1 below). 1 to 8 beeps will be heard, indicating
which entry phone you are connected to. Enter the 1 or 2 digit door strike command (factory set to “QQ”) to momentarily
activate that entry phone door strike or enter “#” to just return to the C.O. call without activating the door strike (see note 2
below). If the door strike is activated, a buzz sound will be heard confirming the strike has been activated. If you require
the door strike to remain on continuously (a truck delivery for example), enter “Q1” to continuously activate that relay. A
double beep will indicate the door strike is latched on. When the visitor calls in again (they have finished unloading the
truck for example), enter touch tones “Q0” to deactivate the relay. Alternatively, the door strike relay can be deactivated by
going off hook with any house phone and entering #1Q0 for door strike relay 1, #2Q0 for door strike relay 2, etc (see
“Outgoing Off-Hook / Remote Access Operation Commands”). A single beep will indicate the door strike relay is off.

The number entered into programming position #44 determines how many times the house phone will ring from an entry
phone call before the call is forwarded. If no call forward numbers are programmed, the C-500 will send a CPC signal to
automatically hang up the entry phone. All Viking hands free phones are able to detect the CPC signal and automatically
hang up. If the C-500 senses that the entry phone has not dropped off, it will send a busy signal. If call forward numbers
are programmed (see note 6 below), it will dial the first one then watch for a busy or ring no answer for the duration of the
Call Forward Maximum Ring Time (#43). If this time elapses and the C-500 has not determined the call has been answered,
it assumes that the call was not answered and goes on to the next call forward number. If all numbers are called without
an answer, the C-500 will send a CPC signal to hang up the entry phone. The Call Forward Maximum Call Time (#42) is
started as soon as the C-500 determines the call has been answered. If this timer elapses, the entry phone call is terminated.

16

The entire sequence of the house phone ringing when the entry phone goes off hook can be skipped. This is
useful if the user will not be at home and wants the C-500 to skip ringing the house phone and immediately forward
all entry calls to the programmed call forward phone numbers. There are several ways to do this. The first is to
set the house phone ring count to 0 in programming position #44. This can only be done in the programming
mode, but can be done locally or remotely. The second way is to go off hook with any house phone and enter
“QQQ” (if enabled, see programming section 18). This places the C-500 in the Immediate Call Forward mode.
With this mode enabled, each time the house phone goes off hook, a triple beep will be heard in order to let the
user know that this mode is on. To cancel the Immediate Call Forward mode, pick up the house phone and enter
“###”. Two beeps will be heard letting the user know the Immediate Call Forward mode has been cancelled. These
immediate call forward commands must be entered within 5 seconds of off hook. If the C-500 has trouble detecting
touch tone commands from off hook or if “Q” or “#” commands conflict with your phone system, you can hook
flash the line which places the phone on artificial talk battery. A beep will be heard and you can now enter your
operation commands. A third option is to provide a contact closure across trigger input 2 (##4 must be
programmed, see programming section 28). A Viking model CTG-1 (with CTGF-BKD software) or CTG-2 can be
used to provide the immediate call forward contact closure automatically at certain times of the day. Note: Outgoing

off-hook/remote access operation commands “

QQQ

” or “###” are disabled when ##4 is programmed.

B. Immediate Call Forward

If the tenant wants to monitor the entry phone, they can pick up any phone in the house and dial out to an entry
phone that supports auto-answering capability by dialing “#1” or “#2” (#1 - #8 when using multiple C-500’s) to call
entry phones 1 or 2 respectively. All Viking Handsfree Entry Phones are equipped with an Auto-Answer feature.
Once the house phones are connected to an entry phone, any Entry Phone Call Operation Command or Outgoing
Off-Hook / Remote Access Operation Command can be dialed to control one or both door strike relays. If the
house phones are monitoring an entry phone and the CO line begins ringing, the house phone will receive a call
waiting tone (single beep) every 12 seconds to indicate the ringing call.

The house phones also have the ability to monitor an entry phone while they are busy on a CO call but ONLY
when the house phones have made an outgoing call on the CO line. If the house phones have answered an
inbound CO call, monitoring entry phones during that call is not possible.

The C-500 is factory programmed to automatically answer an incoming call after 10 rings. This will allow you to
remotely program, control relays, or monitor entry phones on the C-500. The auto answer feature can be set to
a different number of rings or disabled by reprogramming the “#45” memory location (see programming section

13). When the C-500 is set to answer incoming calls after a certain number of rings, there cannot be anything
else on the phone line that could answer the call before the C-500 such as an answering machine.

Note: If a Viking K-1500-6A, K-1500-7 or any standard analog phone is used for the entry phone and the handset
is left off hook (or the button is stuck on any entry phone), the entry phone will receive a continuous busy signal
and the house phones will get 3 beeps, two seconds after off hook to indicate the ‘pranked” entry phone.

C. Monitoring Entry Phones

Anytime the house phone is connected to the entry phone, the tenant can actuate the door strike by entering the
door strike command on their touch tone keypad. The C-500 determines if the touch tones are coming from the
house phone or the entry phone and only accepts commands from the house phone. Once a valid command is
detected, the door strike relay will actuate for the amount of programmed Door Strike Activation time (#40 / #41,
Programming section 9). If an invalid command is entered, wait a few seconds and try again. The C-500 can be
programmed to handle either a 1 digit or 2 digit Door Strike Command (#32, Programming section 6).

D. Activating the Door Strike Relay

E. Trigger Inputs

The C-500 has two Trigger Inputs that can be used for external Request to Exit (REX) switches or Postal Lock
switches. The switches must have a momentary, normally open contact. With “Trigger Inputs Activate Relays”
(##3) programmed, when the C-500 detects a contact closure on trigger input 1 or 2, the corresponding door
strike relay will be energized for the amount of programmed Door Strike Activation Time.

With “Trigger Input 2 Enables Immediate Call Forwarding” (##4) programmed, Trigger input 2 now controls whether
or not the house phone will ring when either entry phone goes off hook. If Trigger Input 2 is shorted, the house
phone ringing will be skipped (Immediate Call Forward Mode), if Trigger Input 2 is open, the C-500 will ring the
house phone when either entry phone goes off hook. The “##4” mode can be useful when using a Viking model
CTG-1 (with CTGF-BKD software) or CTG-2 to automatically forward entry phone calls at certain times of the
day. Note: With ##4 programmed, trigger input 2 cannot be used for activating door strike relay 2 and outgoing

off-hook remote access operation commands “

QQQ

” or “###” are disabled.

17

The privacy number feature is useful for preventing unwanted (prank) entry phone calls from visitors. If a privacy
number has been programmed, an off hook entry phone is given a single beep followed by 4 seconds of silence
to allow the visitor to enter the privacy number. If the visitor enters the correct privacy number, the C-500 will ring
the house phones. If they enter an incorrect number, they will be disconnected.

If a privacy number is not programmed, then an off-hook entry phone will immediately ring the house phones.

Note: The “Privacy Number” may be programmed with the first 6 digits of the actual home/office phone number.
Visitors may dial the actual 7- digit phone number as if they are making an actual telephone call to the home/office.

F. Privacy Number

Touch tone keyless entry codes or keyless toggle entry codes may be used by the tenants to provide keyless
entry. Each entry phone may have up to 6 keyless entry codes and 1 keyless toggle entry code. If a keyless entry
or toggle code has been programmed, an off-hook entry phone is given a single beep followed by 4 seconds of
silence before ringing the house phone. During this time a touch tone “#” + the “keyless entry code” or “keyless
toggle entry code” may be entered.

A correct keyless entry code will provide a timed door strike activation for that entry phone location. A correct
keyless toggle entry code will toggle the door strike from its previous position (ON or OFF) for that entry phone
location. One time use keyless entry codes function like standard keyless entry codes but can only be used ONCE.
After the one time use keyless entry code has been used, it is instantly cleared from the C-500’s memory. This is
ideal for issuing keyless entry codes to service personnel, etc. Note: A short buzz sound indicates when the relay

has been activated and the visitor can now open the door.

G. Keyless Entry Codes, Keyless Toggle Entry Codes, and One Time Use Keyless Entry Codes

Many of the Viking handsfree entry phones are touch tone programmed with silence timing, vox switching speed
and other timing and/or dialing options. The C-500 has an “Ignore Touch Tones for Programming Entry Phone 1
or 2” programming feature that allows the remote programming of these entry phones. For complete details, see
Programming section 27. In the Analog Station Dial Through mode, this feature allows you to remotely program
the C-500 or any of the entry phones used. Note: If using a K-1700 series entry phone, turn off dial tone detection

by setting dip switch 3 to OFF on the K-1700 series phone.

On some Comcast or Time Warner provided phone lines, when the house phones go off-hook and dial “#” as the
first digit of an Outgoing Off-Hook Operation Command (to monitor an entry phone or control a door strike relay),
the cable company provided line will produce a short break in the line and this short break will cause the C-500
to not accept the Outgoing Off-Hook Command. This problem can be corrected by enabling the “# Conflict Mode”
(##5, see programming section 29). When the “# Conflict Mode” is enabled and “#” is the first digit dialed by a
house phone, the C-500 immediately switches the house phone to an artificial line, which allows the Outgoing
Off-Hook Operation Commands to work properly. The “# Conflict” mode can be disabled by entering “##6” in
programming.

C-500 operation changes dramatically when the Analog Station Mode is enabled (“1#63”). This mode is typically
used for commercial or business applications (rather than residential applications), since there is no local ringing
to the house phones output in this mode.

These are the operational differences in the Analog Station Mode:

1. Entry phone calls automatically call forward out on the PBX extension or telephone line. There is no local ringing
to the house phones (#44).

2. There is no Access Code required on inbound calls in order to monitor entry phones or force door strike relays
to operate (if the C-500 is set to answer – see note 3).

3. When the incoming ring count before auto answer (“#45”) is set to 01 to 99, the C-500 will answer inbound
calls on the first ring. If the ring count before auto answer is set to 00, the C-500 will ignore ringing.

4. If calling into the C-500 to monitor entry phones, the C-500 will send up to 5 rings to the entry phone, to allow
the entry phone to answer the call. If the entry has not answered after the fifth ring, the C-500 provides 3 beeps
and hangs up.

5. If a house phone goes off-hook while an entry phone is using the PBX extension or telephone line, the house
phone will be dead (no talk voltage).

6. The “Call Forward Maximum Call Time” (#42) does not apply. There is no time limit for entry phone calls.

H. Programming the Entry Phones

I. Dialing “#” on Cable Company Provided Phone Lines

J. Analog Station Mode Operational Differences

18

1. When a custom door strike code has been programmed (“6” for example) and getting disconnected from the

entry phone after dialing the code is acceptable, users can dial “6”. If they prefer to stay connected to the entry
phone after dialing the code, users must dial a fixed code of “#1QQ” or “#2QQ” (for timed activation), rather than

“#16” or “#26”.

2. When the house phones have answered an entry phone and the CO line is ringing (single beep call waiting
tones are provided every 12 seconds), the C-500 is not able to detect touch tones from the house phones (for
door control) during each ring burst from the phone line. If the house phones attempt to dial a relay command
while the phone line is ringing but the command isn’t accepted, they should try dialing the relay command again.

3. If an entry phone is activated when the house phones are on a CO call but the house phone chooses to ignore
the entry phone, there is no limit to the entry phone ring time. The entry phone will hear ringing forever if ignored
by the house phones.

4. If an entry phone (that has a keypad) is activated when the house phones are on a CO call and the entry phone
dials a “#” touch tone, the CO call is put on hold and the house phone is connected to the entry phone. The “#”
to put the call on hold is accepted from the entry or house phone.

Master/Slave Limitations:

5. When an entry phone (that has a keypad) is activated (entry phone 7 for example) and call forwards out on the
CO line through another C-500, the entry phone can dial “#1QQ” (for example) and control a door/gate on another

C-500. The “other” C-500 can’t tell if this relay command was dialed by an entry phone or a house phone.

6. Entry phone 7 is activated, it eventually call forwards out on the CO line, is answered by a remote phone and

they are talking. When any lower numbered entry phone is activated, the remote phone hears a “call waiting” type
tone. If the remote phone then dials “#”, both entry phones are hung up. The remote party may believe dialing “#”
will hold the original entry phone call while they switch over to the second entry phone.

7. When entry phones are locally ringing the house phones, a higher numbered entry phone “steals” the house
phones away from a lower numbered entry phone, even when the lowered numbered entry started ringing first.
For example, entry phone 1 is activated and rings the house phones. If entry phone 7 also starts ringing before
the house phones answer the entry phone 1 call, the house phones are connected to entry phone 7 instead of
entry 1.

8. The buzz sound heard by the house phones when a relay has been activated gets weaker in volume as more
C-500’s are added to the line. In a four unit master/slave stack, the buzz from C-500 (entry phones 1 and 2) is the
weakest volume and the buzz from C-500 #4 (entry phones 7 and 8) is the loudest volume.

9. When multiple entry phones attempt to forward out on the CO line at the same time (with analog station mode

enabled or disabled), entry phones with a higher entry number than the one using the CO line are not handled
very well. In the analog station mode, a higher numbered entry phone (when activated) will hear one ringback
tone and then hangs up. When the analog station mode is disabled (residential application), a higher numbered
entry phone (when activated) will hear multiple ringback tones but it is hung up when the “other” entry phone is
finished and hangs up the CO line. Entry phones that have a lower entry number than the one using the CO line
are handled better. In the analog station mode, a lower numbered entry phone will hear silence (quiet talk battery)
until the CO line becomes available. Once the CO line is available, the C-500 for that entry will forward their call
and they start to hear ringback tones. When the analog station mode is disabled (residential application), a lower
numbered entry phone hears ringback tones until the CO line becomes available. Once the CO line is available,
the C-500 for that entry will forward their call and they continue to hear ringback tones.

The C-500 has a lot of capability in a small package, but there are some inherent limitations of its product design
that can’t easily be overcome. This section describes these limitations.

Single Unit Limitations (apply to single unit and master/slave applications):

K. C-500 Limitations

C.O.
Line

House
Phone

C-500 #1 C-500 #2 C-500 #3 C-500 #4

Entry

Phone

1

Entry

Phone

2

Entry

Phone

3

Entry

Phone

4

Entry

Phone

5

Entry

Phone

6

Entry

Phone

7

Entry

Phone

8

19

Operation Commands

Momentarily activate the door strike relay of connected Entry Phone (1 or 2 digits, factory set to QQ) QQ or __ __
Un-Latch* (deactivate) the door strike relay of connected Entry Phone

Q0

Latch* (continuously activate) the door strike relay of connected Entry Phone

Q1

Momentarily activate opposite door strike relay of connected Entry Phone***

Q2

Disconnect an Entry phone call #

Entry Phone Call Operation Commands:

Enable Immediate Call Forward**

QQQ

Disable Immediate Call Forward (factory setting)** ###
Monitor any Entry phone # + (Entry phone identifier 1 - 8)
Momentarily actuate selected door strike relay

# + (Entry phone identifier 1 - 8) QQ

Un-Latch* (deactivate) selected door strike relay

# + (Entry phone identifier 1 - 8) Q0

Latch* (continuously activate) selected door strike relay

# + (Entry phone identifier 1 - 8) Q1

Toggle* selected door strike relay

# + (Entry phone identifier 1 - 8) Q#

Answer or disconnect an Entry phone call while on a C.O. call #
Momentarily activate ALL door strike relays

#QQ

Un-Latch* (deactivate) ALL door strike relays

#Q0

Latch* (continuously activate) ALL door strike relays

#Q1

Toggle* ALL door strike relays

#Q#

Outgoing Off-Hook / Remote Access Operation Commands: ****

Quick Operating Reference Guide

Feature Touch Tone Command Description

Activate Door Strike

QQ or

___ ___

Momentarily activate door strike relay of connected entry
phone (1 or 2 digits, factory set to QQ).

Un-Latch Door Strike

Q0

Un-latch* (deactivate) the door strike relay of the
connected entry phone.

Latch Door Strike

Q1

Latch* (continuously activate) the door strike relay of the
connected entry phone.

Activate Opposite

Door Strike

Q2

Momentarily activate opposite door strike relay of
connected entry phone.

Disconnect Phone #

Disconnect an entry phone call.

Outgoing Off-Hook / Remote Access Operation Commands:

Entry Phone Operation Commands:

Touch Tone Command Description

QQQ

Enable Immediate Call Forward**

### Disable Immediate Call Forward (factory setting)**

# + (Entry phone ID 1-8) Monitor any Entry phone

# + (Entry phone ID 1-8) QQ

Momentarily actuate selected door strike relay

# + (Entry phone ID 1-8) Q0

Un-Latch* (deactivate) selected door strike relay

# + (Entry phone ID 1-8) Q1

Latch* (continuously activate) selected door strike relay

# + (Entry phone ID 1-8) Q#

Toggle* selected door strike relay

# Answer or disconnect an Entry phone call while on a C.O. call

#QQ

Momentarily activate ALL door strike relays

#Q0

Un-Latch* (deactivate) ALL door strike relays

#Q1

Latch* (continuously activate) ALL door strike relays

#Q#

Toggle* ALL door strike relays

Note: Make a photocopy of the Operating Commands (below) and place one near your phones for quick reference
to all of the C-500’s Touch Tone operating commands.

* Note: All Latch, Un-Latch and Toggle commands can be disabled in programming.
** Note: With ##4 programmed, QQQ and ### operation commands will be disabled.
*** Note: When using multiple C-500’s, the “

Q

2” command will only activate the opposite door strike relay on the C-500 unit you are communicating with.

**** Note: The Outgoing Off-Hook / Remote Access Operation Commands that allow you to control a door strike relay can also be dialed while talking to an entry

phone, if you wish to remain connected to the entry phone after dialing the relay command (for more information, see note 2 under Operation, section A. Visitors).

* Note: All Latch, Un-Latch and Toggle commands can be disabled in programming.
** Note: With ##4 programmed, QQQ and ### operation commands will be disabled.
*** Note: When using multiple C-500’s, the “

Q

2” command will only activate the opposite door strike relay on the C-500 unit you are communicating with.

**** Note: The Outgoing Off-Hook / Remote Access Operation Commands that allow you to control a door strike relay can also be dialed while talking to an entry

phone, if you wish to remain connected to the entry phone after dialing the relay command (for more information, see note 2 under Operation, section A. Visitors).

20

Printed in the U.S.A.

IF YOU HAVE A PROBLEM WITH A VIKING PRODUCT, CONTACT: VIKING TECHNICAL SUPPORT AT [phone]

Our Technical Support Department is available for assistance Monday 8am - 4pm and Tuesday through Friday 8am - 5pm central time. So that we can give you better service, before you call please:

1. Know the model number, the serial number and what software version you have (see serial label).

2. Have your Technical Practice in front of you.

3. It is best if you are on site.

RETURNING PRODUCT FOR REPAIR

The following procedure is for equipment that needs repair:

1. Customer must contact Viking's Technical Support Department at 715-386-8666 to obtain a Return Authorization (RA) number. The customer MUST have a complete description of the problem,

with all pertinent information regarding the defect, such as options set, conditions, symptoms, methods to duplicate problem, frequency of failure, etc.

2. Packing: Return equipment in original box or in proper packing so that damage will not occur while in transit. Static sensitive equipment such as a circuit board should be in an anti-static bag,
sandwiched between foam and individually boxed. All equipment should be wrapped to avoid packing material lodging in or sticking to the equipment. Include ALL parts of the equipment. C.O.D. or
freight collect shipments cannot be accepted. Ship cartons prepaid to: Viking Electronics, 1531 Industrial Street, Hudson, WI 54016

3. Return shipping address: Be sure to include your return shipping address inside the box. We cannot ship to a PO Box.

4. RA number on carton: In large printing, write the R.A. number on the outside of each carton being returned.

RETURNING PRODUCT FOR EXCHANGE

The following procedure is for equipment that has failed out-of-box (within 10 days of purchase):

1. Customer must contact Viking’s Technical Support at 715-386-8666 to determine possible causes for the problem. The customer MUST be able to step through recommended tests for diagnosis.

2. If the Technical Support Product Specialist determines that the equipment is defective based on the customer's input and troubleshooting, a Return Authorization (R.A.) number will be issued.

This number is valid for fourteen (14) calendar days from the date of issue.

3. After obtaining the R.A. number, return the approved equipment to your distributor, referencing the R.A. number. Your distributor will then replace the Viking product using the same R.A. number.

4. The distributor will NOT exchange this product without first obtaining the R.A. number from you. If you haven't followed the steps listed in 1, 2 and 3, be aware that you will have to
pay a restocking charge.

DOD 177

ZF303500 Rev A

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.

Warranty

Product Support: [phone]

TWO YEAR LIMITED WARRANTY

Viking warrants its products to be free from defects in the workmanship or materials, under normal use and service, for a period of two
years from the date of purchase from any authorized Viking distributor. If at any time during the warranty period, the product is deemed
defective or malfunctions, return the product to Viking Electronics, Inc., 1531 Industrial Street, Hudson, WI., 54016. Customer must contact
Viking's Technical Support Department at 715-386-8666 to obtain a Return Authorization (R.A.) number.

This warranty does not cover any damage to the product due to lightning, over voltage, under voltage, accident, misuse, abuse, negligence
or any damage caused by use of the product by the purchaser or others. This warranty does not cover non-EWP products that have been
exposed to wet or corrosive environments. This warranty does not cover stainless steel surfaces that have not been properly maintained.

NO OTHER WARRANTIES

. VIKING MAKES NO WARRANTIES RELATING TO ITS PRODUCTS OTHER THAN AS DESCRIBED ABOVE

AND DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTIES OR MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.

EXCLUSION OF CONSEQUENTIAL DAMAGES. VIKING SHALL NOT, UNDER ANY CIRCUMSTANCES, BE LIABLE TO PURCHASER,
OR ANY OTHER PARTY, FOR CONSEQUENTIAL, INCIDENTAL, SPECIAL OR EXEMPLARY DAMAGES ARISING OUT OF OR RELATED
TO THE SALE OR USE OF THE PRODUCT SOLD HEREUNDER.

EXCLUSIVE REMEDY AND LIMITATION OF LIABILITY

. WHETHER IN AN ACTION BASED ON CONTRACT, TORT (INCLUDING
NEGLIGENCE OR STRICT LIABILITY) OR ANY OTHER LEGAL THEORY, ANY LIABILITY OF VIKING SHALL BE LIMITED TO REPAIR
OR REPLACEMENT OF THE PRODUCT, OR AT VIKING'S OPTION, REFUND OF THE PURCHASE PRICE AS THE EXCLUSIVE REMEDY
AND ANY LIABILITY OF VIKING SHALL BE SO LIMITED.

IT IS EXPRESSLY UNDERSTOOD AND AGREED THAT EACH AND EVERY PROVISION OF THIS AGREEMENT WHICH PROVIDES
FOR DISCLAIMER OF WARRANTIES, EXCLUSION OF CONSEQUENTIAL DAMAGES, AND EXCLUSIVE REMEDY AND LIMITATION OF
LIABILITY, ARE SEVERABLE FROM ANY OTHER PROVISION AND EACH PROVISION IS A SEPARABLE AND INDEPENDENT ELEMENT
OF RISK ALLOCATION AND IS INTENDED TO BE ENFORCED AS SUCH.