MASTERCALL MC-4044 SERIES 5 User manual

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Operator Manual for Office Extender G/95072 Issue 8
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MASTERCALL
OFFICE EXTENDER
MODEL MC-4044 SERIES 5
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OPERATOR AND INSTALLATION GUIDE
Issue 8 AUTHOR: PETER ZEUG
AUGUST, 1998
ACA SUPPLIER’S CODE N 468
AUSTEL PERMIT NUMBER A94/05/0234
NEW ZEALAND TELEPERMIT PTC 212/96/014
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DESIGNED AND MADE IN AUSTRALIA
DESIGN TWO THOUSAND PTY LTD
TELEPHONE + 61 3 9758 5933 FACSIMILE + 61 3 9758 5560
__________________________________________________________________________________________________
DESIGN TWO THOUSAND IS CERTIFIED TO ISO9001
©COPYRIGHT 1998

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Operator Manual for Office Extender G/95072 Issue 8
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THE OFFICE EXTENDER
CONTENTS PAGE
INTRODUCTION 1
OVERVIEW 1
DESCRIPTION 2
SYSTEMFEATURES 3
PINAccessSecurity 3
Hybrid Voice Amplifier 3
DistinctiveRinging 3
DTMFControlCodes 3
Hook Flash 3
Call Progress Detection 3
Multi-User 3
RemoteProgramming 3
Call Statistics 3
HoldTone 3
Standard Two Wire Ring In/Loop Out 3
ACAPermit 3
INSTALLATION 4
Power 4
Line Connections 4
Office Extender Connection Diagram 4
PROGRAMMING 5
Mode of Operation 5
PIN Numbers and corresponding Telephone Numbers 5
TotalCalls 6
Operator Answered Calls 6
TurnOffExtender 6
RemoteControl 6
MasterReset 6
USER OPERATION 7
DialMode 7
HoldMode 7
CallbackHoldMode 7
Telecommuting Mode without ‘Log on/off’ prompts 7
ACD Agent Mode without ‘Log on/off’ prompts 8
Dial Mode without ‘Log on/off’ prompts 8
ControlCodes 8
ToLogOutoftheACD 9
Home Interface Module 10
SPECIFICATIONS 11
ACA SUUPLIER’S CODE N 468

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Operator Manual for Office Extender G/95072 Issue 8 Page 1
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THE OFFICE EXTENDER
INTRODUCTION
The OFFICE Extender supports ‘telecommuting’ or `teleworking’ applications by extending the facilities of an analogue
extension of a PABX, Centrex, CustomNet or any ACD to any remote location, without the need for dedicated lines.
The OFFICE Extender has three main applications:
1. Allows remote workers (telecommuters) to have full access to the main office PABX for business related calls, while
appearing to callers as if they are in the office. This is referred to as ‘Telecommuting’. ie. commuting by telephone.
2. Allows remote ACD agents (operators) to dial in from ‘home’ telephones and log on to the office PABX Automatic
Call Distributor (ACD) and act as local agents.
3. Allows Assessors at any location to remotely monitor calls. The Assessor is able supervise the way in which operators
are handling calls and then use their assessments to assist in coaching/training programs and quality call management.
Note:
There is a distinction between the ‘worker’ and the ‘agent’. Essentially they are both company employees, however
the ‘worker’ is a staff member that uses a normal PABX extension, and the ‘agent’ is an operator that is required to
log on to a PABX ACD, in order for the ACD to send calls to their extension.
OVERVIEW
The Office Extender is used by telecommuters and operators working from home or at any location remote from the main
business office.
It provides full access from the ‘Small Office/Home Office’ (SOHO) to the company PABX via the Public Switched
Telephone Network (PSTN).
The Office Extender provides remote access to the PABX features, including call back, call transfer and three way calling,
from any DTMF telephone.
The Office Extender allows the telecommuter to be contacted by an internal call from any PABX extension.
The telecommuter, from any location, can contact anyone within the organisation by making an internal call, and similarly
make external calls via the PABX by dialling the appropriate outside line access code.
Outside callers calling into the company PABX can be transferred to the remote location without being aware that the
telecommuter is not on the company premises.
Because the Office Extender is located at the PABX, all internal calls are free and external calls are billed to the
company’s account. The telecommuter is therefore free to use any ‘home’ telephone line, at any time, for telecommuting
purposes. This obviates the need for expensive ‘dedicated’ lines which otherwise tie the telecommuter to a particular
location.
On a larger scale, the Office Extender is ideal for extending the facilities of a PABX ACD where analogue agents
(operators) can remotely log on and operate in the same way as a local analogue agent.

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Operator Manual for Office Extender G/95072 Issue 8 Page 2
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DESCRIPTION
The Office Extender supports telecommuting applications by extending the facilities of an analogue extension of a PABX,
Centrex or ACD to any remote location, without the need for dedicated lines.
The Office Extender interfaces a PABX or ACD analogue extension to either another PABX extension (with a directory
number assigned to it) or to a direct PSTN exchange line.
Access to the system is achieved by dialling the directory number assigned to the Office Extender, and following the voice
guide instructions provided by the Office Extender.
There are six different modes of operation:
1. Dial Mode: The agent dials in to the Office Extender and after the ‘log on’ procedure the agent hangs up. A call is then
made to the agent for each call assigned by the ACD, and the agent’s phone rings as normal. This mode is designed for
infrequent call traffic, where a per call connection is made. The agent does not have to be ‘tied’ to the phone for the whole
session, and can perform other tasks while waiting for the phone to ring. This mode may also be used when the agent is
subject to time charged calls.
2. Hold Mode: The agent dials in to the Office Extender and after the ‘Log on’ procedure remains connected for the
duration of the ACD session. The agent’s telephone ‘bell’ does not ‘ring’ as such. The Office Extender sends simulated
distinctive ring sound to the agent’s ear piece or speaker phone and the agent presses * * to answer. This is designed for
applications with high or frequent call traffic, resulting in minimum call charges. If the agent accidentally hangs up or the
connection is unintentionally released, the Office Extender automatically re-establishes the link by dialling up the agent’s
telephone number when the next call is presented by the ACD.
3. Call Back Hold Mode: This mode is essentially the same as the Hold mode described above but provides additional
security. The agent dials in to the Office Extender and is requested to enter their Operator number and PIN. If valid, the
Office Extender calls the agent back and requests that the PIN be re-entered before the agent is allowed to log on to the
ACD.
4. Telecommuting Mode without ‘Log on/off’ prompts: This mode is similar to the Hold mode described above but has
a broader application. It is designed more for the remote ‘worker’ (telecommuter) rather than the remote ‘agent’ (operator).
The telecommuter dials in to the Office Extender and is simply requested to enter their Operator number and PIN number.
If valid, the telecommuter is requested to standby for calls. The line may either be held open, or the tele-commuter may
hang up. Either way, they will receive calls whenever the PABX extension is called. Please note that with this mode, the
telecommuter is not requested to log on or off the ACD, even though this would still be possible if the Office Extender
was connected to an ACD extension.
5. ACD Agent Mode without ‘Log on/off’ prompts: This mode is the same as the Telecommuting mode described above
with only one exception. After the agent enters the Operator number and PIN number, the agent is automatically connected
to PABX/ACD dial tone. When dial tone is heard, the agent enters a valid code to log on to the ACD. The agent then
presses # # and can now hold the line open, or hang up. Again, either way, the agent will receive calls whenever the ACD
extension is called, either by way of simulated ring tone or on a dial up basis.
6. Dial Mode without ‘Log on/off’ prompts: This mode of operation is similar to the Mode 1 described on the previous
page. The tele-worker dials in to the Office Extender but is not requested to dial 1 or 0 to log on or off. This mode is
designed for infrequent call traffic, or when the tele-worker is subject to time charged calls.

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Operator Manual for Office Extender G/95072 Issue 8 Page 3
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SYSTEM FEATURES
PIN Access Security
Unauthorised access to the Office Extender and PABX/ACD is prevented by Personal Identification Numbers (PINs)
which are fully programmable by the system administrator.
Hybrid Voice Amplifier
The Extender has programmable insertion gain/attenuation, so that the volume of speech can be adjusted to suit both the
operator and the calling party.
Distinctive Ringing
When a call is switched from the PABX/ACD to the Office Extender, distinctive ringing sound (in synchronisation with
incoming ring voltage) is sent to the telecommuter by the Office Extender, indicating the presence and type of a call.
DTMF Control Codes
The telecommuter can control the Office Extender to go ‘on hook’ and ‘off hook’ as required, using standard DTMF
codes, or more easily by using the ‘Home Interface Module’.
Hook Flash
The telecommuter can signal the Office Extender to generate a hook flash (timed loop break) to access features of the
PABX such as hold, recall, and three way calling.
Call Progress Detection
The Office Extender monitors call progress by detecting speech, silence, busy tone, dial tone, congestion tone, line
reversal and loop current loss for the purpose of releasing the line when required.
Multi-User
The Office Extender stores up to eight different operator numbers and corresponding PIN and telephone numbers. This
allows the one unit to be shared by a number of remote agents logging on for their respective shifts.
Remote Programming
The Office Extender is fully remotely programmable, from any DTMF telephone. Access to this feature is protected by a
Master PIN.
Call Statistics
The Office Extender tallies up the total number of calls received, as well as the number of operator answered calls
Hold Tone
A single ‘pip’ is sent to the telecommuter every sixty seconds, when in holding pattern, to indicate that they are still
connected to the Office Extender.
Standard Two Wire Ring In/Loop Out
The Office Extender has a Ringer Equivalent Number (REN) of 1 and appears as a normal two wire analogue telephone to
both the PABX/ACD and the telephone exchange.
AUSTEL (and ACA) Permit
The Office Extender has AUSTEL approval (Permit Number A94/05/0234) in reference to the relevant technical and
safety standards. Design Two Thousand’s ACA supplier’s code is N 468.

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Operator Manual for Office Extender G/95072 Issue 8 Page 4
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INSTALLATION
Power
The Office Extender can be powered by an approved 240 Vac/12 Vdc power adaptor (supplied). It is plugged into a 240 V
mains power outlet and into the Extender power socket. Alternatively, the Office Extender may be powered from a 24 →
48V (nom.) supply.
Line Connections
The Office Extender has two RJ12 line sockets. The two centre pins of the RJ12 are ‘La’ and ‘Lb’.
Line 1 (IN) is connected to a PABX or ACD analogue extension.
Line 2 (OUT) is connected to a PSTN line or an analogue PABX extension with a directory number assigned to it (also
referred to as Direct In Termination (DIT)).
O
FFI
C
E EXTENDER
CO
NNE
C
TI
O
N
REMOTE
TELEPHONE
HIM
HI-4690
PABX
OFFICE EXTENDER
ANALOG
EXTENSIONS
EXCHANGE
LINES
POWER
12-48V DC
POLARITY
INSENSITIVE
LINE 1
A
CA
SUPPLIER’S
CODE N468
SERIAL No.
LINE 2
RS232
PORTALARM MIC PC MODEM
RS232
MASTERCALL
MC-4044
DESIGN TWO THOUSAND PTY LTD
LOCAL
TELEPHONE
ALTERNATE CONNECTION VIA PABX
ALTERNATE CONNECTION USING PABX EXTENSION
IN OUT VIEW OF REAR PANEL

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Operator Manual for Office Extender G/95072 Issue 8 Page 5
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Programming
The following parameters need to be programmed by the system administrator for the Office Extender to function as
required:
Modes of Operation
The default mode of operation is programmed as follows. (It can also be programmed on a per operator basis when
programming their PIN numbers and target telephone numbers).
Enable Dial Mode * 6703 # * 67 1 * #
Enable Hold Mode * 6703 # * 67 2 * #
Enable Call Back Hold Mode * 6703 # * 67 3 * #
Enable Telecommuting Mode * 6703 # * 67 4 * #
Enable ACD Agent Mode * 6703 # * 67 5 * # (Default)
Enable Dial Mode without prompts * 6703 # * 67 6 * #
Check Mode of Operation * 6703 # * 67 - m * *, where m = 1 - 6.
Programming PIN Numbers, Telephone (SOHO) Numbers and Mode of Operation per Operator
Up to eight different agents can be assigned to each Extender by way of their own PIN that corresponds to their mode of
operation and remote telephone number. When an operator logs on with their PIN, the Extender automatically selects their
telephone number for the purpose of ‘Dial Mode’ and re-connecting the remote agent in the ‘Hold Modes’.
To load PIN Numbers and corresponding Telephone Numbers:
First PIN and Mode * # 1 pppp # m First Number 21 nnnn nnnn... #
Second PIN and Mode * # 2 pppp # m Second Number 22 nnnn nnnn... #
Third PIN and Mode * # 3 pppp # m Third Number 23 nnnn nnnn... #
Fourth PIN and Mode * # 4 pppp # m Fourth Number 24 nnnn nnnn... #
Fifth PIN and Mode * # 5 pppp # m Fifth Number 25 nnnn nnnn... #
Sixth PIN and Mode * # 6 pppp # m Sixth Number 26 nnnn nnnn... #
Seventh PIN and Mode * # 7 pppp # m Seventh Number 27 nnnn nnnn... #
Eighth PIN and Mode * # 8 pppp # m Eighth Number 28 nnnn nnnn... #
Note: m = 1 →6 and must be pressed within two seconds after the #, otherwise the default setting will take effect.
When entering the telephone numbers you may enter *# = dialing pause, ** = *, ## = #.

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Operator Manual for Office Extender G/95072 Issue 8 Page 6
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Total Calls
Press 30 and the Office Extender displays the total number of calls received.
To clear the counter, press 30 *.
Operator Answered Calls
Press 3x, where x = Operator number (1-8) and the Office Extender displays the number of calls answered by that remote
agent (operator).
To clear the counter, press 3x *.
Turn Off Extender
Press 1 and the Office Extender is turned off (idle). An agent or telecommuter that has a session up is disconnected, and
the system is ready for access.
REMOTE CONTROL
All system programming functions can be performed from any telephone. This facility provides the system administrator
with full remote control. Access to remote control is protected by a Master PIN which is initially loaded from the Extender
Keypad.
To Load or Change the Master PIN Number
Press * # 0 mmmm #, where mmmm = Master PIN.
To Access Remote Control
1. Dial Line 2 of the Extender and wait for answer.
2. Press *.
3. Enter the Master PIN.
4. Program as you would from the keypad. Programming will be voice prompted.
MASTER RESET
Pressing * 67709600 # resets the Extender to the following conditions:
Mode of operation: ACD Agent mode 5
Operators PIN numbers Mode Telephone Numbers:
1 1111 5 Off
2 2222 5 Off
3 3333 5 Off
4 4444 5 Off
5 5555 5 Off
6 6666 5 Off
7 7777 5 Off
8 8888 5 Off

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Operator Manual for Office Extender G/95072 Issue 8 Page 7
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USER OPERATION
These descriptions refer to user operation without the Home Interface Module (HIM). The HIM further simplifies
operating procedures (See Operator Guide for HIM G/96084).
1. Dial Mode
The home agent logs on by dialling line 2 of the Extender, and waits for the voice prompt to enter Operator number and
PIN. The agent then enters their number and PIN. If the PIN is invalid, the agent hears “Error, invalid PIN, please re-
enter...” If the third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the agent hears “You are
currently logged off, please press 1 if you wish to log on”. If 1 is pressed, the agent hears “Please enter your ACD Log On
code” followed by dial tone. The remote agent can then log in to the ACD just as a local agent would. The agent then
presses # # and hears “You are now logged on, thank you, please hang up”. The Extender then calls the agent’s number
each time an incoming call is received. The agent’s telephone rings as normal, and each call is answered in a normal
manner, that is, picking up the handset and pressing * * to answer, and then pressing # # before replacing the handset at
the end of the call.
2. Hold Mode
The remote agent logs on by dialling line 2 of the Extender, and waits for the voice prompt to enter Operator number and
PIN. The agent then enters their number and PIN. If the PIN is invalid, the agent hears “Error, invalid PIN, please re-
enter...” If the third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the agent hears “You are
currently logged off, please press 1 if you wish to log on”. If 1 is pressed, the agent hears “Please enter your ACD Log On
code” followed by dial tone. The remote agent can then log in to the ACD just as a local agent would. The agent then
presses # # and hears “You are now logged on, please standby for a call to be put through, thank you”. The Extender then
sends a distinctive simulated ring sound to the agent each time an incoming call is received. The remote agent presses * *
to answer the call and # # to release that call.
If the agent accidentally hangs up or the connection is unintentionally released, the Office Extender automatically re-
establishes the link by dialling up the agent’s telephone number when the next call is presented by the ACD.
3. Call Back Hold Mode
The remote agent logs on by dialling line 2 of the Extender, and waits for the voice prompt to enter Operator number and
PIN. The agent then enters their number and PIN. If the PIN is invalid, the agent hears “Error, invalid PIN, please re-
enter...” If the third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the agent hears “You are
currently logged off, please press 1 if you wish to log on”. If 1 is pressed, the agent hears “Thank you, please hang up”.
The Extender then calls the remote agent back and requests for the Operator number and PIN to be re-entered. After the
valid PIN is re-entered, the agent hears “Please enter your ACD Log On code” followed by dial tone. The remote agent
can then log in to the ACD just as a local agent would. The agent then presses # # and hears “You are now logged on,
please standby for a call to be put through, thank you”. The Extender then sends a distinctive simulated ring sound to the
agent each time an incoming call is received. The remote agent presses * * to answer the call and # # to release that call.
If the agent accidentally hangs up or the connection is unintentionally released, the Office Extender automatically re-
establishes the link by dialling up the agent’s telephone number when the next call is presented by the ACD.
4. Telecommuting Mode without ‘Log on/off’ prompts
The telecommuter dials line 2 of the Extender, and waits for the voice prompt to enter Operator number and PIN. The
telecommuter then enters their number and PIN. If the PIN is invalid, the telecommuter hears “Error, invalid PIN, please
re-enter...” If the third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the telecommuter hears
confirmation “bips”. The Extender then sends distinctive simulated ring sound to the telecommuter each time an incoming
call is received. The telecommuter presses * * to answer the call and # # to end that call. If the telecommuter hangs up or
the connection is unintentionally released, the Office Extender automatically dials up the telecommuter’s telephone
number when the next call is presented by the PABX. Therefore, there is no need for the telecommuter to ‘log off’ (# * #),
unless they do not wish receive calls or until their shift is over.

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Operator Manual for Office Extender G/95072 Issue 8 Page 8
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5. ACD Agent Mode without ‘Log on/off’ prompts (Default)
The agent dials line 2 of the Extender, and waits for the voice prompt to enter Operator number and PIN. The agent then
enters their operator number and PIN. If the PIN is invalid, the agent hears “Error, invalid PIN, please re-enter...” If the
third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the agent hears PABX/ACD dial tone
and can enter the ACD log on code followed by # #. The agent then hears confirmation “bips”. The Extender then sends
distinctive simulated ring sound to the agent each time an incoming call is received. The remote agent presses * * to
answer the call and # # to end that call. If the agent hangs up or the connection is unintentionally released, the Office
Extender automatically dials up the agent’s telephone number when the next call is presented by the PABX ACD. When
the agent’s shift is over, they press * *, enter the ACD log off code, press # * #, and hang up.
6. Dial Mode without ‘Log on/off’ prompts
The home agent logs on by dialling line 2 of the Extender, and waits for the voice prompt to enter Operator number and
PIN. The agent then enters their number and PIN. If the PIN is invalid, the agent hears “Error, invalid PIN, please re-
enter...” If the third attempt is still invalid, the call is disconnected. When a valid PIN is entered, the agent hears dial tone.
The remote agent can then log in to the ACD just as a local agent would. The agent then presses # # and hears “Thank you,
please hang up”. The Extender then calls the agent’s number each time an incoming call is received. The agent’s telephone
rings as normal, and each call is answered in a normal manner, that is, picking up the handset and pressing * * to answer,
and then pressing # # before replacing the handset at the end of the call. When the agent’s shift is over, they press * *,
enter the ACD log off code, press # * #, and hang up.
Control Codes During an Established Connection (All Modes)
Answer call * *
Pick up line 1 * *
Hang Up line 1 # #
Hook Flash * * (100 ms timed loop break on line 1)
Force release # * * (Hang up Line 1 and Line 2 but remain logged on)
Clear down # * # (Hang up Line 1 and Line 2 and end session)

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Operator Manual for Office Extender G/95072 Issue 8 Page 9
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TO LOG IN AND LOG OUT OF THE ACD
Refer to the PABX procedures for logging in and out of the ACD.
The Office Extender may be factory programmed to automatically log the caller in and out of the ACD by automatically
dialling the appropriate log in/out commands at the time of Extender log on and log off (clear down). This will simplify the
log in/out procedure.
As standard, remote agents can log OUT of the ACD as follows:
1. Dial Mode
I. Repeat the Extender Log on Procedure as described.
II. When PABX dial tone is heard, dial the appropriate command string to log out of the ACD. This could be
programmed under a memory dial key of the phone.
III. Wait a couple of seconds, press # * # to clear down the Extender, then hang up.
2. Hold Modes and ACD Agent Mode
I. Press # # only if you are on a call and wish to terminate it.
II. Press * * to pick up line 1 and obtain PABX dial tone.
III. Dial the appropriate command string to log out of the ACD.
IV. Wait a couple of seconds, press # * # to clear down the Extender, then hang up.
3. Telecommuting Mode
1. If the line is open to Office Extender:
I. Press # * # to clear down the Extender, then hang up.
2. If your telephone is ‘on hook’:
I. Dial line 2 of the Extender and enter your Operator and PIN number.
II. Press # * # to clear down the Extender, then hang up.

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Operator Manual for Office Extender G/95072 Issue 8 Page 10
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TELECOMMUTING HOME INTERFACE MODULE HI-4690
Description
The Telecommuting Home Interface Module (HIM) is used in conjunction with the Office Extender for Telecommuting
purposes.
Without a HIM, the Telecommuter keeps the connection from the home office to the main office PABX via the Office
Extender by leaving the home phone ‘off-hook’. The Telecommuter signals the Office Extender to go off-hook, on-hook
and hook flash on the PABX extension using DTMF commands.
By using an ‘on-hook’ dialling speaker telephone without a HIM, the Telecommuter can maintain the connection to the
main office PABX but will need to remember the dial commands that signal the Office Extender to answer, hang up and
hook flash, and also remember not to actually hang up between calls if a continuous connection is required.
The Telecommuting Home Interface Module (HIM) solves these issues so that you can use the telephone like normal.
The HIM is situated at the Home Office and is connected in between the Telecommuter’s telephone socket and telephone.
The HIM now does the work of sending answer, hang up and hook flash commands automatically. As a result, the
Telecommuter’s job is made easier, where using an analogue telephone at the home office becomes exactly the same as in
the main office.
When the Telecommuter is logged on for a working session and not on a call, the telephone can be placed on-hook. While
the telephone is on hook, the HIM communicates with the Office Extender to hold the connection to the Home Office.
When a call is presented to the telecommuter by the PABX or ACD, the Office Extender signals the HIM to ring. When
the telephone is picked up, the HIM signals the Office Extender to loop the PABX extension. When the telephone is hung
up, the HIM signals the Office Extender to hang up the PABX extension and keep the connection to the Extender in Hold
Mode, or drop the connection in Dial Mode.
By utilising the HIM at the home office, the Telecommuter does not need to remember any special command codes and
procedures, or to press special buttons to make and receive calls from the PABX.
SOHO Telephone HIM Automatic
DTMF
Signaling
Direction Office Extender
(Line 2) PABX
(Line 1)
On-hook Off hook A A ↔Off-hook On-hook
Ringing Off hook C
←Off-hook Ringing
Answer Off hook B
→Off-hook Off-hook
Hang up Off hook A A →Off-hook On-hook
Off-hook Off hook B →Off-hook Off-hook
Hook-flash Hook flash C C →Off-hook Hook-flash
# * # On hook D →On-hook On-hook
Operating Procedure
When first connecting the HIM, it will take about 30 seconds for the unit to initialize. During this period, any connected
equipment must be ‘on-hook’.
To Establish the Telecommuting Session
1. Dial the Extender and wait for answer.
2. Enter your Operator number and PIN.
3. Obtain dial tone and enter your ACD Log On code (if necessary).
4. Hang up.
To End the Telecommuting Session
1. Lift handset, wait for dial tone and dial your ACD Log Off code (if necessary).
2. Press # * #. Listen for “This telecommuting session is now over, goodbye”. Repeat if necessary.
3. Hang up.

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Operator Manual for Office Extender G/95072 Issue 8 Page 11
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SPECIFICATIONS
Amplifier
Frequency Range 300 Hz to 3.4 kHz (-3dB).
Input - Output Impedance 220 ohm + 120 nF // 820 ohm (complex).
Return Loss > 17 dB, 300 Hz to 3400 Hz.
Insertion Gain 20 dB +/- 2 dB maximum.
Output Level -10 dBm →0 dBm programmable.
Noise < -50 dBm unweighted, 300 Hz to 3.4 kHz.
Method of operation Software controlled AGC with noise discrimination.
Control Logic
Processor Motorola 6809.
Random Access Memory 8K static.
Program Memory 32K byte EPROM.
Interface 8 bit latched data.
Number, Status & Option Storage Electrically Erasable Programmable Read Only Memory (EEPROM).
Dialling Pulse (Decadic) - Electronic, controlled by processor.
10 pps. 34/66 Mark/Space ratio.
Tone (DTMF) -Electronic, controlled by processor.
70 ms on, 70 ms off.
Number Storage 1 →8 phone numbers of up to 20 digits each (local, STD or IDD
calls), programmable from Keypad or remotely by telephone.
Displays Single digit 14mm 7 segment LED.
Power On LED (Red).
Divert On LED (Green).
Controls 12 button keyboard.
Voice Announcements
Voice Prompts and Announcements
Storage medium EPROM.
Recording method 28K bit/sec ADPCM.
Personalised Voice Announcements (Optional)
Storage medium Linear EEPROM.
Recording method Analogue DAST, time sampled at 8 kHz.
Record time Up to 16 seconds x 2.
Detectors
Activity detector
Sensitivity Software adjustable.
DTMF detector
Sensitivity > -40 dB.
Detect time > 50 ms.
Dial Tone detector
Frequency range 380 Hz - 550 Hz.
Sensitivity > 50 mV.

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Operator Manual for Office Extender G/95072 Issue 8 Page 12
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General
Power Input 12 V dc 1A (nom.) power adaptor (12 →48 V working standard).
Power Consumption Standby, 30mA (350 mW).
Operating, typically 450 mA (5W).
Remote Control ‘Touch Tone’ DTMF telephone or encoder, with Talk-back.
Telecom Connection Mode 1 (parallel) or mode 3.
Enclosure Desk top, powder coated metal enclosure, or 19” 1 U Rack mount, powder coated
metal enclosure
Dimensions Desk Top W350mm x D240mm x H25 - 60mm.
Rack Mount W19” x D250mm x H44mm.
Packed Weight 3 kg.
AUSTEL Permit No. A94/05/0234
New Zealand Telepermit PTC 212/96/014
ACA Supplier’s Code N 468
Please note:
Specifications are subject to change without notice.
Ordering Codes:
Desk Top 4648 DSK
Rack Mount 4648 RAC
12 VDC 1A Power Adaptor PP1
13.8 VDC Regulated 10A Supply RPS-10138
Home Interface Module HI-4690
MASTERCALL MC-4044 OFFICE EXTENDER
DESIGNED AND MANUFACTURED BY
DESIGN TWO THOUSAND PTY LTD
TELEPHONE + 61 3 9758 5933 FACSIMILE + 61 3 9758 5560
E-MAIL gen@design2000.com.au HOME PAGE www.design2000.com.au
MADE IN AUSTRALIA

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Technical Guide for Office Extender T/95081 Issue 5
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MASTERCALL
OFFICE EXTENDER
MODEL MC-4044 SERIES 5
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TECHNICAL GUIDE
Issue 5 AUTHOR: PETER ZEUG
AUGUST, 1998
ACA SUPPLIER’S CODE N 468
AUSTEL PERMIT NUMBER A94/05/0234
NEW ZEALAND TELEPERMIT PTC 212/96/014
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DESIGNED AND MADE IN AUSTRALIA
DESIGN TWO THOUSAND PTY LTD
TELEPHONE + 61 3 9758 5933 FACSIMILE + 61 3 9758 5560
E-MAIL gen@design2000.com.au HOME PAGE www.design2000.com.au
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DESIGN TWO THOUSAND IS CERTIFIED TO ISO9001
©COPYRIGHT 1998

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Technical Guide for Office Extender T/95081 Issue 5
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THE OFFICE EXTENDER
CONTENTS
System Configuration Codes 1
Tone Detection and Amplifier Codes 3
Activity Codes on the Monitor Display 5
StatusLED 5
UserErrorCodes 5
RemoteControl 5
To change the Master PIN Number 5
ToAccessRemoteControl 5
To load PIN Numbers and corresponding Telephone Numbers 6
To check PIN Numbers and corresponding Telephone Numbers 6
TotalCalls 6
OperatorAnsweredCalls 6
TurnOffExtender 6
MasterReset 6

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Technical Guide for Office Extender T/95081 Issue 5 Page 1
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SYSTEM CONFIGURATION CODES
Using either the Extender Keypad or by Remote Control, enter System access code * 67 03 #,listen for “Please enter
command”
COMMANDS
* nnwhere nn is option code number
n = entry
# = scroll down to next option number
* * = abandon (do not save any changes)
* # = store (save any changes)
After either storing or abandoning program changes you can continue to make other programming changes, press # # to
end, or simply hang up.
OPTION CODE ENTRY RESPONSE
TYPE OF DIALLING * 61 “61 is n, please enter command”
Tone/PulseAuto 1 1
Tone (DTMF) 2 2
Pulse(DEC) 3 3
TELEPHONE LINES * 62 “62 is n, please enter command”
Standard 1 1
‘O pause’ PABX extensions L1 & L2 2 2
ExchL1,PABXL2 3 3
PABXL1,exchL2 4 4
SPARE *63 “63 is n, please enter command”
SILENCE DISCONNECT * 64 “64 is n, please enter command”
n x 20 secs (eg. 8 x 20 = 160 secs) 8 8 (In increments of 20 secs up to 180 secs)
0 = unlimited (4 hrs) 0 0
CALL TIME LIMIT * 65 “65 is n, please enter command”
n x 5 mins (eg. 8 x 5 = 45 mins) 8 8 (In increments of 5 mins up to 45 mins)
0 = unlimited (4 hrs) 0 0
H.I.M.MODE *66 “66 is n, please enter command”
On 1 1
Automatic 2 2
MODE OF OPERATION * 67 “67 is n, please enter command”
DialMode 1 1
HoldMode 2 2
CallBackHoldMode 3 3
Telecommuting Mode 4 4
ACD Agent Mode 5 5
Dial Mode without Log on/off prompts 6 6
ANSWER DETECT MODE FOR
CALL CONNECTION * 68 “68 is n, please enter command”
Connect on speech or cessation of valid ring tone 1 1
Only connect on cessation of valid ring tone 2 2
Dial and connect 3 3

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Technical Guide for Office Extender T/95081 Issue 5 Page 2
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OPERATOR OVERRIDE * 69 “69 is n, please enter command”
No 1 1
Yes 2 2
DIAL TONE DETECT * 70 “70 is n, please enter command”
5 sec wait for dial tone and re-loop if none 1 1
3 sec wait for dial tone (blind dial) 2 2
CONTINUOUS TONE DISCONNECT* 71 “71 is n, please enter command”
Keep connection on continuous tone 1 1
Disconnect on continuous tone 2 2
LINE TEST FOR DISCONNECTION * 72 “72 is n, please enter command”
Loop break every 10 seconds of silence 1 1
No loop break 2 2
SPARE * 73 & * 74 “73/74 is n, please enter command”
CALL PROGRESS TEST NUMBERS * 75 “75 is n, please enter command”
Off 1 1
On 2 2
LINE REVERSAL/LOOP CURRENT
LOSS DETECT * 76 “76 is n, please enter command”
Yes - for connect and disconnect 1 1
No 2 2
Yes - for disconnect only 3 3
Yes - for connect only 4 4
ERROR MESSAGE NUMBERS * 77 “77 is n, please enter command”
Off 1 1
On 2 2
SPARE *78 “78 is n, please enter command”
BUSY COUNTER FOR
DISCONNECTION * 79 “79 is n, please enter command”
1 →8bursts 7 7
MAX. RING VOLTAGE OFF TIME * 80 “80 is n, please enter command”
1 →8 Seconds 6 6
RANDOM BUSY DETECT * 81 “81 is n, please enter command”
Yes 1 1
No 2 2
HOOK FLASH * 82 “82 is n, please enter command”
100 ms 1 1
250 ms 2 2
500 ms 3 3
1000 ms 4 4
(* 67 7096 00 # sets all options to the factory default, Extender responds “Thank you, please enter command”. Take care
not to unintentionally enter this command !!!) Factory presets are Underlined. These can and should be changed to suit the
application.

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Technical Guide for Office Extender T/95081 Issue 5 Page 3
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TONE DETECTION AND AMPLIFIER CODES
Using either the MASTERCALL Keypad or by Remote Control, enter Tone Detection access code * 67 05 #, listen for
“Please enter command”
COMMANDS
* nnwhere nn is tone parameter code number
nnn = entry
# = scroll down to next tone parameter
* * = abandon (do not save any changes)
* # = store (save any changes)
After either storing or abandoning program changes you can continue to make other programming changes, press # # to
end, or simply hang up.
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TONE PARAMETER CODE DEFAULT VALUE PERIOD (ms) RESPONSE
ENTRY Actual Nominal
BUSY OFF MIN * 00007 224 225 “00 is nnn, enter command”
BUSY OFF MAX * 01019 544 550 “01 is nnn, enter command”
BUSY ON MIN * 02007 224 225 “02 is nnn, enter command”
BUSY ON MAX * 03019 544 550 “03 is nnn, enter command”
NU OFF MIN * 04010 320 320 “04 is nnn, enter command”
NU OFF MAX * 05020 640 640 “05 is nnn, enter command”
NU ON MIN * 06062 1984 2000 “06 is nnn, enter command”
NU ON MAX * 07094 3008 3000 “07 is nnn, enter command”
RING 1 OFF MIN * 08004 128 130 “08 is nnn, enter command”
RING 1 OFF MAX * 09008 256 260 “09 is nnn, enter command”
RING 1 ON MIN * 10008 256 260 “10 is nnn, enter command”
RING 1 ON MAX * 11015 480 480 “11 is nnn, enter command”
RING 2 OFF MIN * 12050 1600 1600 “12 is nnn, enter command”
RING 2 OFF MAX * 13075 2400 2400 “13 is nnn, enter command”
RING 2 ON MIN * 14008 256 260 “14 is nnn, enter command”
RING 2 ON MAX * 15015 480 480 “15 is nnn, enter command”
Notes:
•Entry = tone length in milliseconds divided by thirty two unless otherwise noted
•There are eight values for RING TONE, thus allowing two OFF times and two ON times. Where only one OFF and/or
ON time is required, set values for both RING 1 and RING 2 to the same. always set the RING 1 values to the shorter
values when two tone lengths are involved.

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Technical Guide for Office Extender T/95081 Issue 5 Page 4
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AMPLIFIER PARAMETERCODE DEFAULT VALUE RESPONSE
SPARE * 16 000 “16 is nnn, enter command”
DTMF Tx LEVEL * 17 010 (000 = Off, 063 - 001) “17 is nnn, enter command”
SPEECH CONNECT SENSITIVITY - Transitions prior to valid ring tone
* 18 005 (transitions) “18 is nnn, enter command”
SPEECH CONNECT SENSITIVITY - Accumulated signal length of transitions in ms/32
* 19 018 (ms/32) “19 is nnn, enter command”
SPEECH CONNECT SENSITIVITY - Transitions during valid ring tone
* 20 006 (transitions) “20 is nnn, enter command”
DISCONNECT CODE * 21 0-9, 11-18 (Consult factory) “21 is nnn, enter command”
TONE DETECTOR SENSITIVITY (range 20 - 60) (Increasing value decreases sensitivity)
* 22 030 “22 is nnn, enter command”
BACKGROUND NOISE REJECTION (range 20 - 60) (Increasing value increases rejection, decrease for fax/data)
* 23 050 “23 is nnn, enter command”
OUTPUT LEVEL LINE 2 (‘OUT’) (range 034 - 063) (Increasing value increases output level)
* 27 042 “27 is nnn, enter command”
OUTPUT LEVEL LINE 1 (‘IN’) (range 034 - 063) (Increasing value increases output level)
* 28 042 “28 is nnn, enter command”
DUPLEX GAIN (range 20 - 40) (Increasing value increases duplex gain)
* 29 036 “29 is nnn, enter command”
AGC OUTPUT LEVEL (000 = off, range 060 - 100) (Increasing value increases automatic gain control)
* 30 000 “30 is nnn, enter command”
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