Viking C-2000a Instructions for use

The E-10A and E-20B are telephone line powered

speaker phones designed to provide two-way

handsfree communication. Both function identically,

but are available in two different housings to better

suit the application. When the “Call” button is

pressed, the E-10A or E-20B will come off-hook and

will remain off-hook until a CPC signal is detected,

the programmed timeout has elapsed, a busy signal

is detected, or the call goes silent, making the unit

automatically disconnect.

The E-10A/20B can be connected directly to a C.O.

line or analog PABX/KSU station when programmed as a ringdown circuit, or used with a Viking Hot-Line Dialer.

If a line or station is not available, Viking’s DLE-200B ring down circuit can be used. One, or up to four, E-

10A/20B speaker phones can share an existing phone line in a house or small business when used with a

Viking C-200 or C-2000A (respectively) Entry Phone Controllers.

For outdoor or harsh environments, the E-10A/20B are available with Enhanced Weather Protection (EWP).

The E-10A-EWP and E-20B-EWP feature rubber gaskets and boots, closed cell foam gasketing, hand soldered

silicon sealed connections, anti-corrosive gel filled tip and ring connectors, as well as urethane encapsulated

circuit boards with internally sealed, field-adjustable trim POTS and DIP switches.

E-10A, E-10A-EWP,

E-20B, E-20B-EWP

Speaker Phones

January 6, 2009

Power: Telephone line powered (18 VDC/20mA minimum)

E-10A Dimensions: Overall: 127mm x 127mm x 57.2mm (5” x 5”

x 2.25”), Rough-in box: 102mm x 102mm x 57mm (4” x 4” x 2.25”)

E-20B Dimensions: 140mm x 115mm x 38mm (5.5” x 4.5” x 1.5”)

Shipping Weights: E-10A: .91 kg (2 lbs), E-20B: .75 kg (1.5 lbs)

Standard E-10A/E-20B Environment: -26° C to 54° C (-15° F to

130° F) with 5% to 95% non-condensing humidity

E-10A/E-20B-EWP Environment: -26° C to 54° C (-15° F to 130°

F) with up to 100% condensing humidity

Speaker Volume: Approximately 70db maximum @ 1m

Ring Voltage: 25V AC RMS minimum

CPC Disconnect Time: 300ms minimum

REN: 0.8A

Standard Connections: (1) 2-position terminal block

EWP Connections: (2) gel-filled butt connectors

Provide Convenient Handsfree Communication

TECHNICAL

• Alternate action call button to place or cancel a call

• Intelligent call progress detection for automatic hang-up

on CPC, silence, busy signal, or time out

• Telephone line powered

• Weather resistant features: mylar speaker, gaskets,

internally sealed push button switch, UV stable exterior,

enamel coated PCB

• Optional Enhanced Weather Protection (EWP) available for

greater weather resistance

• Adjustable microphone and speaker volume

• Programmable maximum call length

• Selectable auto-answer feature allows remote monitoring

• Two way handsfree communication

• Programmable VOX (mic/speaker) switching speed

E-10A/E-10A-EWP Features:

- Vandal resistant, black powder painted, aluminum

face plate with heavy duty metal call button and

mounting gasket

- Flush mountable using included plastic rough-in box

part # 259576

- Surface mountable with an optional VE-5x5

E-20B/E-20B-EWP Features:

- Light gray colored, impact resistant, U.V. stable, plastic

chassis

- Surface mountable only

• Commercial, industrial and residential door security

• Door or gate communication

• Business delivery entrances

• Use in conjunction with a Viking K-1900-5 Dialer on

C.O. lines or analog PABX/KSU stations

• Use on any programmed ringdown circuit of an analog

PABX/KSU station that provides CPC, return to dial

tone, or silence when called phone hangs up

E-10A/E-10A-EWP E-20B/E-20B-EWP

The E-10A and E-10A-EWP are designed to be flush mounted to the included 4” x 4” x 2” deep plastic rough in box or surface mounted using an

optional Viking model VE-5x5. Note: The E-10A and E-10A-EWP will NOT mount to a standard double gang box. The plastic rough in box (part #

259576) may be purchased separately. Go to www.vikingelectronics.com and click on “Spare Parts”.

A. Mounting the E-10A and E-10A-EWP

Front View of Optional

VE-5x5 (not included)

2.25”

Condensation

Drain Hole

*1/8" thick foam gasket (included)

5.14”

5.22” 3.25”

Call

4.0"

Rear View of VE-5x5 (not included)

Push to Call Button

(4) 6-32 X 3/4” stainless steel, flat head,

hexdrive, screws (included)

Condensation Drain Hole

5.0” Typical

E-10A shown with

Viking Model

VE-GNP

Gooseneck

Pedestal

(4) 0.38” diameter (for gooseneck mounting)

(4) 0.2 x 0.43 slots for double gang box

(2) 0.2 x 0.43 slots for single gang box

(1) .74" dia

3.0” 3.3”

3.0”

2.1”

Wall Stud

Front View of Plastic

Rough-In Box (included)

Wire knock out

(2) Standard flat head dry wall

(sheet rock) screws (not included)

The optional VE-5x5 Surface Mount Box is designed

to be surface mounted to a single gang box, double

gang box or VE-GNP gooseneck pedestal (right).

?Need More Information on VE-5x5 or VE-GNP?

Call (715) 386-4345 and select 424.

* Note: Peel off paper liner and

adhere gasket to the back of the

faceplate, centering it over the

four corner mounting holes.

Caution: For rough surfaces (ie:

brick, stucco, etc.) additional

caulking may be required.

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 (800) 472-5555 or Electronic Specialists Inc. at (800) 225-4876.

IF YOU HAVE A PROBLEM WITH A VIKING PRODUCT, PLEASE CONTACT: VIKING TECHNICAL SUPPORT AT (715) 386-8666

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.

WARRANTY

Viking warrants its products to be free from defects in the workmanship or materials, under normal use and service, for a period of one year from the date of purchase from any authorized Viking distributor or 18 months from the date manu-

factured, which ever is greater. 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.

Vikings sole responsibility shall be to repair or replace (at Viking's option) the material within the terms stated above. VIKING SHALL NOT BE LIABLE FOR ANY LOSS OR DAMAGE OF ANY KIND INCLUDING INCIDENTAL OR CONSE-

QUENTIAL DAMAGES RESULTING DIRECTLY OR INDIRECTLY FROM ANY BREACH OF ANY WARRANTY EXPRESSED OR IMPLIED, OR FOR ANY OTHER FAILURE OF THIS PRODUCT. Some states do not allow the exclusion or limi-

tation of incidental or consequential damages, so this limitation may not apply to you.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHICH ARE HEREBY EXCLUDED

BEYOND THE ONE YEAR DURATION OF THIS WARRANTY. Some states do not allow limitation on how long an implied warranty lasts, so the above limitation may not apply to you.

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 product over the counter at no charge. The distributor will then return the product to

Viking 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.

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 individual-

ly 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.

the necessary modifications to maintain uninterrupted service.

If trouble is experienced with the E-10A/E-20B, for repair or warranty information, please contact:

Viking Electronics, Inc., 1531 Industrial Street, Hudson, WI 54016 (715) 386-8666

If the equipment is causing harm to the telephone network, the telephone company may request that you disconnect the

equipment until the problem is resolved.

Connection to Party Line Service is subject to State Tariffs. Contact the state public utility commission, public service com-

mission or corporation commission for information.

WHEN PROGRAMMING EMERGENCY NUMBERS AND (OR) MAKING TEST CALLS TO EMERGENCY NUMBERS:

Remain on the line and briefly explain to the dispatcher the reason for the call. Perform such activities in the off-peak

hours, such as early morning or late evenings.

It is recommended that the customer install an AC surge arrester in the AC outlet to which this device is connected. This

is to avoid damaging the equipment caused by local lightning strikes and other electrical surges.

PART 15 LIMITATIONS

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment

is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and,

if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communica-

tions. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will

be required to correct the interference at his own expense.

FCC REQUIREMENTS

This equipment complies with Part 68 of the FCC rules and the requirements adopted by the ACTA. Inside the front panel

of this equipment is a label that contains, among other information, a product identifier in the format US:AAAEQ##TXXXX.

If requested, this number must be provided to the telephone company.

The REN is used to determine the number of devices that may be connected to a telephone line. Excessive REN's on a

telephone line may result in the devices not ringing in response to an incoming call. In most but not all areas, the sum of

the REN's should not exceed five (5.0) To be certain of the number of devices that may be connected to a line, as deter-

mined by the total REN's, contact the local telephone company. For products approved after July 23, 2001, the REN for

this product is part of the product identifier that has the format US:AAAEQ##TXXXX. The digits represented by ## are the

REN without a decimal point (e.g., 03 is a REN of 0.3). For earlier products, the REN is separately shown on the label.

The plug used to connect this equipment to the premises wiring and telephone network must comply with the applicable

FCC Part 68 rules and requirements adopted by the ACTA. If your home has specially wired alarm equipment connected

to the telephone line, ensure the installation of this E-10A/E-20B does not disable your alarm equipment. If you have ques-

tions about what will disable alarm equipment, consult your telephone company or a qualified installer.

If the E-10A/E-20B causes harm to the telephone network, the telephone company will notify you in advance that tempo-

rary discontinuance of service may be required. But if advance notice isn't practical, the telephone company will notify the

customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is

necessary.

The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the

operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make

The E-20B and E-20B-EWP are designed to be surface mounted to a single gang box (not included), a standard 4” x 4” electrical junction box (not

included), or directly to a wall or flat sided post. Caution: For rough surfaces (ie: brick, stucco, etc.) additional caulking may be required.

** Earth

Ground

(optional)

(Spade

connector

included)

Red

(Ring)

Green (Tip)

VIKING©

DLE-200B

RES

RINGDOWN

BUSY

VIKING

Programmable

Tone Dialer

MODEL: K-1900-5

Quick Programming Guide

1. Call the phone connected to the dialer.

2. Answer phone. Enter

∗

& security code.

(Factoryset to 845464) Write your

securitycode below:

3. Enter your spped dial number & #00.

Note: For additional programming see

K-1900-5 Technical Practice.

Viking Electronics, Inc.

Hudson, WI 54016

LINE IN PHONE

VIKING©MODEL C-2000A

VIKING

ELECTRONICS

HUDSON, WI 54016

ADVANCED DOOR/GATE AND

ENTRY PHONE CONTROLLER

1 2 3 4 5 678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

PWR 13.8 VAC

EARTH GND

ENTRY PHONE 1

DOOR STRIKE 1

ENTRY PHONE 2

DOOR STRIKE 2

ENTRY PHONE 3

DOOR STRIKE 3

ENTRY PHONE 4

DOOR STRIKE 4

DOORBELL SWITCH /

AUX. INPUT

AUX. CONTACT

OUTPUT

PHONE LINE

INPUT

LINE OUT

TO PHONES

Viking C-2000A 1-4 Entry Phone

Controller (not included) *** Optional Viking

K-1900-5 Dialer

(not included)

**** C.O. Line or Analog

PABX/KSU Station

(programmed for ringdown)

Viking DLE-200B

Two Way Ringdown

Circuit (not included)

To dedicated phone, unused trunk/line input of a phone

system, or Viking C-1000B Doorbox Controller

SINGLE ENTRY PHONE

CONTROLLER

VIKING©MODEL C-200

PWR13.8 VAC

AUXRELAY

CONTACTS

123456789

EARTH

GND

PHONE LINE

INPUT

LINE OUT

TO PHONES

TO ENTRY

PHONE

VIKING

ELECTRONICS

HUDSON, WI 54016

EARTH

GND

C.O. LINE

INPUT

OUT TO

PHONES

ENTRY

PHONE

N.O. COM N.C.

AUX CONTACTS

1 2 3

Viking C-200 Single Entry

Phone Controller (not included)

To C.O. Line or

PABX/KSU station

Rear View of the

E-10A / E-10A-EWP

* Gel-Filled Butt

Connectors

***** Drip Loop or

C. Wiring the E-10A and E-10A-EWP

Call

VIKING©

To open the speaker box, remove

the two screws from the cover.

Mount back panel to a wall, a single

gang box or a 4”x4” junction box with

the arrow pointing up. Note: For outdoor

applications apply a bead of caulk

between back panel and wall.

3.40”

1.55”

3.30”

2.35”

3.40”

Side view of the

E-20B and E-20B-EWP

Attach the cover to the base

with the two included screws

as shown.

Back panel of the

E-20B and E-20B-EWP

Front view of the

E-20B and E-20B-EWP

B. Mounting the E-20B and E-20B-EWP

** Earth Ground

(optional)

(Spade connector

included)

Red

(Ring)

Green (Tip)

VIKING©

DLE-200B

RES

RINGDOWN

BUSY

VIKING

Programmable

Tone Dialer

MODEL: K-1900-5

Quick Programming Guide

1. Call the phone connected to the dialer.

2. Answer phone. Enter

∗

& security code.

(Factoryset to 845464) Write your

securitycode below:

3. Enter your spped dial number & #00.

Note: For additional programming see

K-1900-5 Technical Practice.

Viking Electronics, Inc.

Hudson, WI 54016

LINE IN PHONE

VIKING©MODEL C-2000A

VIKING

ELECTRONICS

HUDSON, WI 54016

ADVANCED DOOR/GATE AND

ENTRY PHONE CONTROLLER

1 2 3 4 5 678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

PWR 13.8 VAC

EARTH GND

ENTRY PHONE 1

DOOR STRIKE 1

ENTRY PHONE 2

DOOR STRIKE 2

ENTRY PHONE 3

DOOR STRIKE 3

ENTRY PHONE 4

DOOR STRIKE 4

DOORBELL SWITCH /

AUX. INPUT

AUX. CONTACT

OUTPUT

PHONE LINE

INPUT

LINE OUT

TO PHONES

Viking C-2000A 1-4 Entry Phone

Controller (not included) *** Optional Viking

K-1900-5 Dialer

(not included)

**** C.O. Line or Analog

PABX/KSU Station

(programmed for ringdown)

Viking DLE-200B

Two Way Ringdown

Circuit (not included)

SINGLE ENTRY PHONE

CONTROLLER

VIKING©MODEL C-200

PWR13.8 VAC

AUXRELAY

CONTACTS

123456789

EARTH

GND

PHONE LINE

INPUT

LINE OUT

TO PHONES

TO ENTRY

PHONE

VIKING

ELECTRONICS

HUDSON, WI 54016

EARTH

GND

C.O. LINE

INPUT

OUT TO

PHONES

ENTRY

PHONE

N.O. COM N.C.

AUX CONTACTS

1 2 3

Viking C-200 Single Entry

Phone Controller (not included)

To C.O. Line or

PABX/KSU station

Rear View of the

E-20B / E-20B-EWP

* Gel-Filled Butt

Connectors

***** Drip Loop

To dedicated phone, unused trunk/line input of a phone system, or Viking C-1000B Doorbox Controller

D. Wiring the E-20B and E-20B-EWP

*** Note: Talk battery must be a minimum of 28V DC when using the speaker phone with a Viking Hot-Line Dialer. For more information on Hot-Line

Dialers, retrieve Fax Back Documents 317.

** Note: To increase surge protection, loosen the PCB mounting screw labeled (as shown above) and fasten a wire with spade terminal (includ-

ed) from the mounting screw to Earth Ground (grounding rod, water pipe, etc.)

* Note: The gel-filled (water-tight) butt connectors are designed for insulation displacement on 19-26 gauge wire with a maximum insulation of 0.082

inches. Cut off stripped wire ends before terminating.

**** Note: When installing a line powered phone on a low voltage and/or low loop current phone system

extension, a PS-2R Talk Battery/Loop Current boosting power supply may be required. ?Need More Information on the PS-2R?

Call (715) 386-4345 and select 512.

A. Adjusting Speaker Volume

The SPKR VOL pot can be adjusted to increase or

decrease the speaker volume to the level desired as shown.

B. Adjusting the Microphone Volume

In certain noisy locations (background traffic, machinery or

wind), the microphone volume may need to be decreased.

A symptom of this is one-way talk path, in which the distant

party cannot be heard over the speaker. A MIC VOL pot is

provided for increasing or decreasing the microphone vol-

ume. Note: If the microphone volume is set too high or too

low, one-way talk path may occur.

ON S1

1 2 3

OFF

1 2 3

DIP Switches

(shown in default positions)

Speaker Volume

(shown in default positions)

Microphone Volume

(shown in default positions)

Less (-)

More (+)

Rear View of the Speaker Phone models:

E-10A / E-10A-EWP / E-20B / E-20B-EWP Less (-)

More (+)

***** Note: When wires are routed from above, a “drip loop” is recommended to keep water away from the circuit board.

This feature selects the length of time that calls will remain connected without

voice activity. Programmable in increments of 10 seconds up to a maximum of

90 seconds. To disable the silence time out, program nothing in the time value

location. Use the chart at the right. * Note: The factory default is 40 seconds.

C. DIP Switch Programming

DIP switch 1 is for turning the Auto Answer feature ON and OFF. The E-10A/E-20B is

factory set to auto answer when an inbound call is detected.

1. Auto Answer Feature ON/OFF (DIP Switch 1)

With DIP switch 2 in the ON position, if the E-10A/E-20B detects more than 5 sec-

onds of continued dial tone, the unit will automatically disconnect. If the E-10A/E-20B

is installed on a continuously noisy line, it may detect the noise as dial tone and auto-

matically disconnect. If this happens, turn the dial tone detection (DIP switch 2) OFF.

2. Dial Tone Detection ON/OFF (DIP Switch 2)

With DIP switch 3 in the OFF position, the E-10A/E-20B is in the “Normal Operation Mode” (factory setting). By placing DIP switch 3 in the ON

position, the E-10A/E-20B’s programming mode is enabled. The programming mode is used for adjusting the Call Length Time Out, Silence Time

for automatic disconnect and the Talk/Listen delay (VOX switching speed). These features are set from the factory and normally do not need

adjustment. If adjustment is necessary, see Programming sections D - I.

3. Programming Mode ON/OFF (DIP Switch 3)

DIP

Switch

Position

OFF

Description

Auto-Answer ON *

Auto-Answer OFF

Dial Tone Detection ON *

Dial Tone Detection OFF

Programming Mode

Normal Operation Mode *

* Note: These are the factory settings.

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 respon-

sibility 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 210

ZF302360 Rev B

Printed in the U.S.A.

D. Accessing the Programming Mode

Step 1. Move DIP switch 1 to the ON position (sets unit to answer incoming calls - see section C).

Step 2. Move DIP switch 3 to ON (incoming calls automatically enter the programming mode - see section C).

Step 3. From a Touch Tone phone call the line attached to the E-10A/E-20B.

Step 4. When the E-10A/E-20B answers, 2 beeps will be heard and you will automatically enter the programming mode.

Step 5. When finished programming, enter “0000” to exit programming and move DIP switch 3 back to OFF (see section C).

The E-10A/E-20B can be programmed from any Touch Tone phone using a telephone line, Viking model C-200 or C-2000A Entry

Phone Controller, analog PABX/KSU station or a Viking model DLE-200B Line Simulator.

This feature selects the maximum length of time that calls can be connected.

Programmable in increments of 1 minute up to a maximum of 9 minutes.

Programming nothing in the time value location will disable the call length time

out. With the call length disabled, the E-10A/E-20B phone must rely on CPC,

busy, silence or return dial tone to hang-up. Use the chart at the right. * Note:

The factory default is 5 minutes.

Time

Value

111

1111

11111

111111

1111111

11111111

111111111

10 or more

Call Length

Time Out

1 min

2 min

3 min

4 min

5 min*

6 min

7 min

8 min

9 min

Disabled

E. Quick Programming Features

Call length time out (1-9 minutes), blank = disabled (factory set to 11111 = 5 minutes) ..................................

Silence time out for disconnect (10-90 seconds), blank = disabled (factory set to 1111 = 40 secs) ................

Talk/listen delay (VOX switching speed) 0.1 - 0.9 seconds (factory set to 111 = 0.3 secs) .............................

Forced hang-up command (used to exit programming and hang up) .............................................................

000

0000

111...

Select

Feature

beep

3 beeps

Wait for

Beep(s)

Enter

Time Value

beep beep

Wait for

2 Beeps

F. Programming Beeps

If a valid “Feature” is entered, a single beep will be heard. If an invalid “Feature” (five or more zeros) is entered, 3 beeps will be

heard and the E-10A/E-20B will hang up. If a valid “Time” is entered 2 beeps will be heard. If an invalid “Time” is entered, 3 beeps

will be heard and you will have 20 seconds to enter the next valid “Feature”.

G. Call Length Time Out

H. Silence Time Out

Silence

Time Out

10 sec

20 sec

30 sec

40 sec*

50 sec

60 sec

70 sec

80 sec

90 sec

Disabled

Talk/Listen

Delay

.1 sec

.2 sec

.3 sec*

.4 sec

.5 sec

.6 sec

.7 sec

.8 sec

.9 sec

Error

This feature selects switching time between talk and listen modes (VOX switching time). Use the chart above.

* Note: The factory default is .3 seconds.

I. Talk/Listen Delay (VOX Switching Speed)

When the push button is pressed, the E-10A/E-20B phone goes off-hook, much like a standard speaker phone. In the event that the line is busy, the E-

10A/E-20B will hang up. The E-10A/E-20B will also automatically hang up on CPC, silence, busy signal, return to dial tone or time out. If programmed to