Auerswald ETS-4308 I User manual

Operator's Manual
for Electronic Telephone Systems
ETS-4308 I, ETS-2204 I, ETS-2206 I
and ETS-2106 I Revision 2

Pictograms that are used
aReplace the handset. kPunch in a number in the specified
range (in this case, a three-digit number
between 100 and 299).
bPick up the handset. SSwitch a function on and off with a
switch (1: switch on/0: switch off).
BPick up the handset of the programming
extension (in default setting 31).
ÄSwitch with three status conditions
cAn extension is ringing. NDay/night switching (1: night on/
0: day on)
fYou hear a tone that is described in the
respective chapter.
OPunch in the password, e.g. the secret
password (in the default setting, 1111)
gMake a call. You first hear for a short
time the ringing tone.
RChoose the number of the relay (differs
depending on the PBX).
nPunch in the internal calling number or
the extension number (differs depend-
ing on the PBX).
xPunch in the number of the call group
(1-8).
rPunch in the external calling number or
the one that you can dial via the
exchange.
yChoose the number of the bell signal in
the case of code calling (1-5).
1Punch in the specified digit (e.g. 1). FPress the enquiry key (with DTMF tele-
phones, the flash key/with ISDN tele-
phones the enquiry key or a menu item/
omitted with pulse dialling telephones).
he Signs indicating information or a warn-
ing

Operator's Manual B-3
ContentsOperationTroubleshootingIndex Appendix
Description
By selecting an AUERSWALD PBX, you have chosen a telecommunications system that
allows you to exploit the features of Euro-ISDN using your existing telephones, fax
machines, answering machines and other equipment.
This Operator's Manual will introduce you to day-to-day use of your PBX. It shows in detail
how to make phone calls, to use the abbreviated dialling memory, and to operate the func-
tions like call transfer, pick-up and query, as well as the added features like alternation and
conference switching. To be able to operate these functions, you should, if possible, already
have connected all your telephones and other equipment.
In addition, you will find here a few programming functions (e.g. call forwarding, room mon-
itoring and immediate connection without dialling). Some users mayneed these functions in
everyday operation oftheir equipment.Programming steps, which are retained even if there
is a power outage, are indicated by the initial password that you have to enter.
More detailed programming steps are described in the Installation and Configuration Man-
ual.
Due to the wide range of functions, you should use the Operator's Manual as a work of ref-
erence.
Should your telephonesystem not work as expected, your first step should be to consult the
self-help information in ChapterTroubleshooting on page B-29.
eIf you haven't yet installed your system, first read the enclosed Installation and
Configuration Manual. This will tell you how to set up your PBX on the existing ISDN
connection, how to tell the system your calling numbers and how to set up ringing
(call distribution).
You have to note some differences that depend on which of the PBXs that are
described here you are using. Information regarding ISDN telephones, for example,
refers only to PBXs that have internal S0ports. For more details on this topic, refer
to the overview of features on the first pages of the Installation and Configuration
Manual.
For answers to general questions on operation and programming, refer to Page B-5.

B-4 Operator's Manual
Contents
TABLE OF CONTENTS
1 OPERATION ......................................................................................................................................B-5
1. 1 Enquiry key on different telephones........................................................................................B-5
1. 1. 1 DTMF and pulse dialling telephones ...........................................................................................B-5
1. 1. 2 ISDN telephones..........................................................................................................................B-5
1. 2 Making a call (internally and externally)..................................................................................B-6
1. 3 Taking calls (when the telephone rings) .................................................................................B-6
1. 4 Punch in abbreviated dialling numbers (simplified dialling).................................................B-6
1. 5 Query (second call) ...................................................................................................................B-7
1. 6 Alternation (from a query conversation) .................................................................................B-8
1. 7 Conference (from query conversation) ...................................................................................B-8
1. 8 Transferring a Conversation (from a Query Conversation)...................................................B-9
1. 9 Transferring a conversation (exchange without query).........................................................B-9
1. 10 External call to external extension...........................................................................................B-9
1. 11 Carrying out pick-up (with calls to another telephone) .......................................................B-10
1. 12 Using a directed S0port (with ETS-4308 I with two external S0ports only).......................B-11
1. 13 Reserving the line for the next external call .........................................................................B-11
1. 14 Make a private external conversation....................................................................................B-11
1. 15 Initiating a group call (calling several people at the same time).........................................B-12
1. 16 Initiating a code call (calling one person at several telephones)........................................B-12
1. 17 Callback (the called telephone is engaged or nobody lifts the handset)...........................B-13
1. 17. 1 Initiating an internal callback......................................................................................................B-13
1. 17. 2 Starting external callback (CCBS) .............................................................................................B-14
1. 18 Call Waiting (Second Call Waiting When Your Telephone is Busy)....................................B-14
1. 19 Intercom with door opening ...................................................................................................B-15
1. 20 Call protection (do-not-disturb)..............................................................................................B-16
1. 21 Initiating a priority call (if the called telephone is engaged) ...............................................B-16
1. 22 Taking an existing call (with answering machines) .............................................................B-16
1. 23 Parking and Transferring on a PTMP Connection (external S0port)..................................B-17
1. 23. 1 Using the PBX to park an ongoing external conversation .........................................................B-17
1. 23. 2 Using the PBX to take a parked external conversation .............................................................B-18
1. 24 Parking and Transferring on internal S0bus ........................................................................B-18
1. 25 Muting (with DTMF telephones) .............................................................................................B-18
1. 26 Follow-me (taking calls to other internal telephones with you)..........................................B-18
1. 27 Call forwarding (redirecting calls to internal and external telephones) .............................B-19
1. 27. 1 Extension call forwarding (redirect telephone)...........................................................................B-20
1. 27. 2 MSN/DDI call forwarding (redirect calling number)....................................................................B-21
1. 28 Manually switching over day/night mode.............................................................................B-22
1. 29 Room monitoring (listening into a room by telephone).......................................................B-22
1. 29. 1 Initiating room monitoring ..........................................................................................................B-22
1. 29. 2 Carrying out room monitoring ....................................................................................................B-23
1. 30 Immediate connection without dialling (automatic dialling after you lift the handset).....B-23
1. 31 Acknowledging a triggered alarm (ETS-4308 I only)............................................................B-24
1. 32 Switching the remote switching relay (by telephone)..........................................................B-25
1. 33 Remote programming (by the service technician) ...............................................................B-25
1. 34 Automatic Firmware Update...................................................................................................B-27
1. 35 Operating an SD-420 System Display....................................................................................B-28
1. 36 Automatically shutting down extensions..............................................................................B-28
2 TROUBLESHOOTING.....................................................................................................................B-29
2. 1 Possible Faults ........................................................................................................................B-30
3 APPENDIX .......................................................................................................................................B-32
3. 1 Safety information ...................................................................................................................B-32
3. 2 Warranty Terms .......................................................................................................................B-32
4 INDEX...............................................................................................................................................B-33
CUSTOMER SERVICE ....................................................................................................................B-39

Operator's Manual B-5
Operation
Carry out the actions that are depicted as symbols in left-to-right order. Symbols that are
located under one another are available as alternatives. Change these symbols for the ones
that are directly above them in the first row, depending on what you want to set or who you
want to call. The symbols are described in more detail on the fold-out cover flap.
In addition, you will find here descriptions of a few programming functions that are indicated
by the initial password that you have to enter. Depending on the instruction, lift the handset
on the relevant telephone set or on the programming telephone. After entering the initiating
digit – a 7 or an 8 – and the valid password, the system outputs an acknowledgement tone
(a pulsating tone). After you enter the rest of the programming digits, you hear another
acknowledgement tone. You now have the option of ending programming by replacing the
handset or immediately entering another sequence of programming digits (omit the initiating
digit and the password), assuming that this sequence is initiated with the same digit and
password. If you hear an engaged tone, you have made a mistake (entered the wrong digit
or similar). Replace the handset and repeat the programming step.
Except for the ETS-2106 I Rev. 2, you canconnect to your PBX ISDN telephones as well as
analog pulse dialling andDTMF ones.Asa result, there areseveral differences in operation.
If you are already involved in a call with another (internal or external) party, on a DTMF tel-
ephone you must first press the Flash key ( Fkey, signal key) before punching in a digit for
transferring the call. Pulse dialling telephone sets do not have a Flash key and they do not
need them. This means that if you have a pulse dialling telephone set connected to your
PBX, you do not need to press the Flash key. Any deviations with pulse dialling telephones
are shown in square brackets ([ ]).
There are wide variations in the operation of ISDN telephones. With some of them, you use
function keys to operate them, whereas others have menu-driven operator guidance, i.e.
prompts are displayed on your telephone set that tell you which button to press, for example.
You normally use an Fkey, for example, to initiate a query. In a few cases, this key is also
referred to as the hold key. On some ISDN telephones, the query is menu-driven. You end
the query by pressing what is known as the cut-off key. In some cases, the system also
prompts you in a menu.
1 Operation
hTo be able to carry out programming, the programming switch in the system on the
PCB must be in the “erlaubt” (allowed) setting (Chapter First Use on page I-26 in the Instal-
lation and Configuration Manual).
1. 1 Enquiry key on different telephones
1. 1. 1 DTMF and pulse dialling telephones
hIf you have problems with the Flash key on your telephone, refer to Chapter Flash
Time of DTMF Telephone Sets on page I-27 in the Installation and Configuration Manual.
1. 1. 2 ISDN telephones

B-6 Operator's Manual
Operation
Making an external call:
Making an Internal call:
Taking a call:
Making a call using abbreviated dialling:
1. 2 Making a call (internally and externally)
b f 0 f r g
Internal dial tone Access digit External dial tone External calling number Call
b f n g
Internal dial tone Internal calling number e.g. 33 Call
hWhen making an external call on the direct external telephone 씮omit the access
digit.
When making an internal call on the direct external telephone 씮punch in a
*before
the internal calling number (see Chapter Direct External Telephone on page I-43 in the
Installation and Configuration Manual).
The designations of the extension terminals correspond to the internal calling numbers.
1. 3 Taking calls (when the telephone rings)
c b g
Ringing
1 long tone: external
3 short tones: internal Call
1. 4 Punch in abbreviated dialling numbers (simplified dialling)
b f k g
Internal dial tone Number of abbreviated dialling memory Call
hStoring abbreviated dialling numbers 씮Chapter Entering Abbreviated Dialling
Numbers on page I-46 in the Installation and Configuration Manual.
Abbreviated dialling at the direct external telephone 씮punch in a
*before the abbrevi-
ated dialling number (see Chapter Direct External Telephone on page I-43 in the Installa-
tion and Configuration Manual).
Abbreviated dialling with query not possible.

Operator's Manual B-7
Operation
If you want to ask somebody something during an ongoing conversation without ending it,
you can use the query function. The ongoing conversation is interrupted to call another
party.
Query:
End query and continue 1st call:
1. 5 Query (second call)
g F n g
Call (no. 1) Omit with pulse dialling) Internal calling number e.g. 33 Query call (no. 2)
or
0 r
Access digit and
external calling number
or
5
Door terminal for intercom
g F 8 g
Query call (no. 2) [Omit with pulse dialling] Call (no. 1)
hCurrent calling partner hangs up 씮you are automatically back in the first conver-
sation [with some ISDN telephones, you must also press the enquiry key to fetch the other
party from the background].
The calling partner in the background hangs up 씮the query conversation becomes a
normal conversation.
You replace the handset 씮both calling partners are transferred (see ChapterTransfer-
ring a Conversation (from a Query Conversation) on page B-9 or ChapterExternal call to
external extension on page B-9).
The party that you called second does not respond 씮punching in
F 8returns you to
the first conversation [With ISDN: usually the cut-off key/with pulse dialling: omit the
F].
Instead of the ringing tone, the system issues an engaged tone for 2 seconds and returns
to the first conversation [With ISDN: you usually need the cut-off key] 씮Called party is
engaged or doesn't have an outgoing access that may be necessary.
When querying a door extension, door opening is not possible with ISDN telephones.
A wide range of options can result from a query conversation 씮alternation, conference,
transfer (see the next few sections).
After punching in
Fyou can also initiate a group call (see ChapterInitiating a group call
(calling several people at the same time) on page B-12) or a code call (see ChapterInitiat-
ing a code call (calling one person at several telephones) on page B-12).

B-8 Operator's Manual
Operation
Your PBX givesyou the option of speaking alternately to two parties. For alternation with two
external parties, you normally need the support of the exchange (alternation (HOLD) ISDN
feature). You can, however, also carry out alternation without the exchange, since the PBX
supports alternation via the second B channel.
From the query conversation to alternation:
Your PBXgives you theoption of speaking to two parties at the same time. For a conference
with two external parties, you normally need the support of the exchange (three-party con-
ference call (3PTY) ISDN feature). To save the additional charges that may be involved, the
PBX supports conferences via the second B channel.
From the query conversation to the conference:
1. 6 Alternation (from a query conversation)
g F 1 g F 1 g
Query conversation
(no. 2) [Omit with pulse dialling] Conversation (No. 1) [Omit with pulse dialling] Query conversation (no. 2)
hTransferring a call from the alternation status to a fourth party is not possible. You
must first end the conversation with one of the two calling partners.
Ending 씮Same as query conversation: by punching in
F 8or by one of the calling part-
ners replacing the handset. If you replace the handset, the other two parties are connected
(see ChapterTransferring a Conversation (from a Query Conversation) on page B-9 or
ChapterExternal call to external extension on page B-9).
1. 7 Conference (from query conversation)
g F 6 g
Query conversation (no. 2) [Omit with pulse dialling] Conference
hTransferring from a conference to a fourth party is not possible. You must first end
the conversation with one of the two calling partners.
Ending 씮Same as query conversation: by one of the calling partners replacing the hand-
set. If you replace the handset, the other two parties are connected (see ChapterTransfer-
ring a Conversation (from a Query Conversation) on page B-9 or ChapterExternal call to
external extension on page B-9).
A conference is not possible with a door extension.
If a hands-free telephone set is involved in a conference with three internal extensions,
you may hear echoes or whistling in the line.

Operator's Manual B-9
Operation
Transferring from a query conversation:
Using this function, you can pass on an external conversation to another internal party with-
out announcing the conversation to him/her.
Transferring a conversation without previously announcing it:
If you want to transfer an external conversation to another external party, you must either
set an appropriate authorization (user program) or initiate one of the external conversations
by punching in
67. If you initiated an external conversation by punching in 67, the system
remembers this status until you replace the handset. This means that you can make a vari-
ety of other query conversations until two external parties have been transferred.
1. 8 Transferring a Conversation (from a Query Conversation)
g a
Query conversation (no. 2) Replace the handset –the other two parties are connected
hTransferring an external conversation to another external extension 씮On your
own telephone set, either set an appropriate authorization (user program) or initiate one of
the two external conversations by punching in
67and the access digit 0(ChapterExter-
nal call to external extension on page B-9).
With a very few ISDN telephones, after you replace the handset 씮your telephone rings
and you are connected again with your first calling partner.
You cannot transfer a door extension.
1. 9 Transferring a conversation (exchange without query)
g F n a
External
conversation [Omit with pulse dialling] Internal calling number e.g. 33
Replace the handset –the system continues to call
the internal party –if he or she lifts the handset, they
are connected with the external party.
hThe called party does not lift the handset 씮after 60 seconds, the system returns
the call to your telephone (your telephone rings). If you still haven't lifted the handset after
another 60 seconds, the conversation is separated. If your telephone is engaged in the
meantime, the system interrupts the procedure after the first 60 seconds have expired and
the external conversation is separated.
The system issuesthe engagedtone for 2 seconds and returns you to thefirst conversation
[With ISDN: you usually need the cut-off key] 씮The called party is engaged or doesn't
have an outgoing access that may be necessary.
1. 10 External call to external extension

B-10 Operator's Manual
Operation
Carrying out transfer of external call to external extension:
When you hear a telephone ring and you want to take the call for a party who isn't in the
office, for example, you should use the pick-up function. This allows you to fetch the call to
your own extension.
If you carry outundirected pick-up, you fetch the call from any telephone that happens to be
ringing. If several telephones are ringing, and you want to take an external call, you should
use external pick-up. If several telephones are ringing, and you want to take the call from a
specific telephone, use directed pick-up.
Carrying out pick-up:
g F 67 0 r g a
1st external
conversation [Omit with pulse dialling] Access digit and external calling number 2nd external conversation
Replace the
handset –the
other two parties
are connected
or
k
Number of abbreviated
dialling memory
hIf you initiated the first external conversation by punching in
67 and the access
digit
0, you only need to punch in the access digit 0to initiate the query conversation.
Directed S0port (with ETS-4308 I with two external S0ports only) with
67 91 or 67
92.
You are charged for the transferred conversation.
A conversation that is transferred in this way may last a maximum of 30 minutes. This is
for safety reasons, since if you transfer by mistake the time announcement and the weather
forecast, for example, this could lead to an infinitely long conversation.
1. 11 Carrying out pick-up (with calls to another telephone)
c b f 6 n g
Remote
telephone Own tele- phone Internal dial tone Punch in a 6 and the internal calling number of the ringing telephone e.g. 33 for directed pick-up Call
or
60
For external pick-up
or
61
For undirected pick-up
hWith engaged tone on external pick-up 씮necessary outgoing access not availa-
ble.

Operator's Manual B-11
Operation
If you are using your PBX in a two-family house, you can use the following function to settle
the charges separately. Both families initiate external calls only by means of the S0port that
they pay for. Incoming calls, on the other hand, arrive on the line that is free at any one time
to make possible higher availability.
Selectively making calls via an S0port:
If all the lines (1st and 2nd B channels of the available external S0ports) are engaged, you
hear the engaged tone after punching in the access digit. You can now reserve a line so that
the PBX informs you immediately when one is free.
Reserving the line for an external call
Each partyhashisor her own personal password and a special private outgoing access that
you can set independently of the normal (business) access. When you initiate private calls
1. 12 Using a directed S0port (with ETS-4308 I with two external S0ports only)
b f 91 f r g
Internal dial
tone Access digits for the 1st S0port External dial
tone External calling number Call
or
92
Access digits for the 2nd S0port
hEngaged tone 씮the selected S0port is engaged or the necessary outgoing access
is not available
If you only ever want to access one external S0port from your telephone, do not set out-
going access on this telephone for the other S0port. You then only need to punch in the
access digit
0.
1. 13 Reserving the line for the next external call
b f 0 f 2 f a
Internal dial tone Access digit Engaged tone Acknowledgement Tone
씮
c b f r g
As soon as the line is free External dial tone External calling number Call
hPunch in the abbreviated dialling number 씮After lifting the handset of the ringing
telephone, press the
* key or replace the handset for at least one second if there is no *
key on your phone or it is not working (pulse dialling telephones/many ISDN telephones).
With ISDN telephones, you cannot dial after lifting the handset of the ringing telephone 씮
replace the handset and then lift it immediately –now dial again (including the access digit!)
1. 14 Make a private external conversation

B-12 Operator's Manual
Operation
in this way, it is possible to record charges and call data separately from normal (business)
recording.
To make a private external call, use the normal access digit and the calling number or an
abbreviated dialling number and just punch in before them the following sequence of digits:
90 and the private password. As-delivered, the private password is set with extension 31
to 3131 with extension 32 to 3232,... etc. Assuming that you want to make a call from
extension 31 to somebody whose calling number is „0815 4711, you would punch in 90
3131 0 0815 4711.
Making a private call
You can group the staff of a specific department (marketing, sales, etc.) into call groups to
enable you to call them at the same time. You must first program the extension groups
accordingly (see user program).
Calling a call group:
If you arrange a bell signal with someone who cannot always be reached on the same tele-
phone, you can call the person at several extensions within the PBX at the same time (code
call). The special ringing rhythm has the advantage that the intended person immediately
b f 90 X 0 r g
Internal
dial tone Private password e.g. 3232 Access digit and external calling number Private call
or
k
Number of abbreviated dialling
memory
hOutgoing access is necessary for private calls.
Shorter dialling 씮shorten or even delete your password (see Chapter Changing the Pri-
vate Password on page I-72 in the Installation and Configuration Manual). You then initiate
a private call by simply punching in
90, the access digit 0and the calling number.
You could, for example, initiate selectively a private external call via the 2nd S0port
(with ETS-4308 I with two external S0ports only) as follows:
90 3131 92
08154711.
1. 15 Initiating a group call (calling several people at the same time)
b f 30 x g
Internal dial tone Number of the call group (1-8). Call
hQuery 씮with DTMF telephones, punch in F30 and the number of the call group.
1. 16 Initiating a code call (calling one person at several telephones)

Operator's Manual B-13
Operation
recognizes who the call is for. At users' lines to which fax machines or answering machines
are connected,code calling may notbe allowed, since these devices takecalls automatically
(see Chapter Setting Up Various Pieces of Equipment (QuickConfiguration)on page I-40 in
the Installation and Configuration Manual). The following bell signals are available:
1 one long tone and one short one, pause.
2 one long tone and two short ones, pause.
3 one long tone and three short ones, pause.
4 one long tone and four short ones, pause.
5 one long tone and five short ones, pause.
Initiating code calling:
If you call somebody who is just making a call, you can reach them as soon as possible by
initiating a callback (callback on busy). In this connection, your call and that of other parties
is returned as soon as the other called party replaces the handset.
If you call an internal extension, you can –in addition to callbackonbusy –initiate a callback
on no response. In this case, you and the other parties are called as soon as your busy
called party has replaced the handset after completing his or her next call.
:
b f 40 y g
Internal dial tone Number of the bell signal (1-5) Call
hQuery 씮with DTMF telephones, punch in
F40 and the number of the bell signal.
Transferring an external call using code calling 씮After replacing the handset, the tele-
phones continue ringing with the one long tone rhythm for external calls
With many ISDN telephones, the ringing rhythm is not affected; with others, however, the
system shows the code call on the display.
1. 17 Callback (the called telephone is engaged or nobody lifts the handset)
1. 17. 1 Initiating an internal callback
b f n f 2 f a
Internal dial
tone Internal calling number e.g. 33 Engaged tone or ringing tone Acknowledge- ment tone
씮
c b g
as soon as the called party replaces the handset after this (or the next) call Call
hBefore punching in the suffix digit,
2please wait three seconds.

B-14 Operator's Manual
Operation
Your PBX supports ISDN feature completion of calls to busy subscriber (CCBS).
Starting an internal callback on busy:
If you allow call waiting on your telephone (See Chapter Call Waiting Permission on
page I-44 in the Installation and Configuration Manual), you can make a phone call at your
leisure even though you are expecting an important external call. In this case, the calling
party hears the ringing tone even though you are currently carrying on another conversation.
For your part, you hear the call waiting signal. This is a signal to you that somebody else is
trying to get in touch with you. You now have the option of rejecting the call waiting party –
who then hears the engaged tone–or you can accept the call; in this case the previous call-
ing party waits in the background. Call waiting should not be allowed with fax machines and
modems, since the call waiting signal disturbs their data transfers.
1. 17. 2 Starting external callback (CCBS)
b f 0 r f 2 f a
Internaldial
tone Access digit External calling number Engaged tone Acknowledgement tone
씮
c b g
As soon as the called party
replaces the handset after this call Lift the handset –the system calls the external subscriber Call
hNo acknowledgement tone 씮the exchange refused the desired callback.
Before punching in the suffix digit,
2please wait three seconds.
The external subscriber must have the appropriate technical capability to be able to carry
out a callback.
With some network providers, callback to an external subscriber with a PTP connection is
not possible.
The exchange may trigger the callbackbefore the external subscriber has replaced the
handset, due to the fact that only one of the B channels of his or her ISDN connection is
available.
An external callback on no response is not possible.
A callback is stored in the exchange for up to 45 minutes. If the subscriber has not com-
pleted his or her call within this time, the system clears the callback automatically.
In the case of a callback, you are called for up to 15 seconds. If you do not lift the handset,
the system clears the callback.
The external subscriber's telephone does not ring until you have accepted the callback
by lifting your handset.
1. 18 Call Waiting (Second Call Waiting When Your Telephone is Busy)
hCall waiting is triggered only by external calls.

Operator's Manual B-15
Operation
Call waiting party (external pick-up):
Rejecting a call waiting party:
Making door calls and door opening on a telephone with doorbell set:
Door call and door opening on telephones without doorbells:
g f F 60 g
1st conversation Call waiting signal [Omit with pulse dialling] 2nd conversation
hYou now have various options for handling the two subscribers (alternation, confer-
ence). If you want to transfer the call waiting party that you have taken, you must first com-
plete your conversation with the first calling partner.
Instead of pick-up, you can also complete your current conversation by replacing the
handset. After this, initiate the other conversation in the normal way by lifting the handset.
g f F 69 g
Call Call waiting signal [Omit with pulse dialling] Return to conversation
1. 19 Intercom with door opening
c b g F 2 g a
Doorbells Within 30 seconds Door call [Omitwithpulse
dialling] Door is opened Return to door conversation
hIf you do not lift the handset within 30 seconds after the last time the doorbell rings,
proceed as described below.
b 5 g F 2 g a
Door call Omit with pulse dialling) Door is opened Return to door conversation
hIf the door function is also set on relay no. 3 (with ETS-4308 I only –default setting),
it is switched on at the same time as the door opener relay for 1-99 minutes. This means
that it is used, for example, to automatically switch on and off staircase lighting.
When querying a door extension, door opening is not possible with ISDN telephones.
To be able to open the door, the telephone set must have door opener permission granted
(default setting/see also user program).

B-16 Operator's Manual
Operation
If you do not want to be reached, you can use the call protection feature to block your tele-
phone for internal and external calls (e.g. because you don't want the phone in your nursery
at home to ring at night). You canof course still make callsfrom your telephone in this status.
(As-delivered, call protection is deactivated.)
Activating/deactivating call protection:
An external subscriber cannot reach an extension that has initiated call protection. Internal
subscribers, on the other hand, can get around call protection in case they have to pass on
important information.
If you hear an engaged tone after punching in an internal extension number and you still
want to reach the extension, punch in another digit to initiate a priority call.
Initiating a priority call:
If your modem or your answering machine, for example, answers a call that is intended for
you, you can take this call by punching in the calling number of the corresponding device
and thenanother digitto connect to the calling party. You can ofcourse alsotake a call from
any other extension if you think this is sensible. Once you have picked up the call, the sub-
scriber at this extension hears the engaged tone. The other party must have allowed call
pick-up (see Chapter Setting Up Various Pieces of Equipment (Quick Configuration) on
page I-40 in the Installation and Configuration Manual and in the user program).
1. 20 Call protection (do-not-disturb)
b 7 Q 113 S
Relevant extension Universal password 1: on / 0: off
hBy means of a priority call, an internal subscriber can still call a call-protected exten-
sion.
For general information on programming by telephone and the tones that are issued in
this connection, refer to Page B-5.
When you call a call-protected extension, you hear the engaged tone.
1. 21 Initiating a priority call (if the called telephone is engaged)
b f n f 3 g
Internal dial tone Internal calling number e.g. 33 Engagedtone Call
hIf you still hear the engaged tone for this extension after punching in a
3씮the sub-
scriber is just making a call.
Before punching in the suffix digit,
3, please wait three seconds
Query 씮priority call not possible.
1. 22 Taking an existing call (with answering machines)

Operator's Manual B-17
Operation
Taking an existing call
The parking/changing over function on the PTMP connection allows you to park an external
conversation that you are currently making using a piece of ISDN equipment (an ISDN tel-
ephone oryour PBX) and to transfer it to anotherpiece of ISDN equipment that you are also
running on your PTMP connection (NT/external S0bus).
Using the PBX, you can take a call that was parked by another piece of ISDN equipment
(e.g. an ISDN telephone on the NT/an external S0bus).
In the same way, you can use your PBX to park an ongoing external conversation that
another ISDN telephone on yourPTMP connection then takes over. The PBX can,of course,
also take the parked call itself. The transfer must take place within the specified time of
approximately three minutes.
Parking a conversation:
b f n f 6 g
Internal
dial tone Internal calling number (e.g. 33) of the telephone that is making the call to be picked up. Engaged tone Picked-up call
hTo pick up external calls 씮outgoing access is necessary.
Before punching in the suffix digit,
6, please wait three seconds
If you are already talking to another subscriber, pick-up is not possible.
1. 23 Parking and Transferring on a PTMP Connection (external S0port)
1. 23. 1 Using the PBX to park an ongoing external conversation
g F 68 f a
External conversation [Omit with pulse dialling] Acknowledgement tone
hAfter approximately three seconds, the acknowledgement tone changes to an
engaged tone; you should not consider this to be a failed attempt at parking a call.
Instead of the acknowledgement tone, the engaged tone appears immediately 씮park-
ing has failed and after a few seconds the system reconnects you with your calling partner.
In this case, it may well be that your exchange does not support the Parking/changing over
on the bus feature.
Some ISDN telephones are not capable of taking a call that was parked without code dig-
its. Using a programming function, you can tell the PBX always to park external calls with
code digits (see Chapter Setting the Code Digits for Parking on the Bus on page I-44 in the
Installation and Configuration Manual).
In the case of ETS-4308 I with two external S0ports 씮selectively initiate the external con-
versation via the 1st S0port. You cannot park an ongoing external conversation on the
2nd S0port.

B-18 Operator's Manual
Operation
Taking back a parked conversation:
Using function Parking/switching over on the internal S0bus, you can park a call that you
are currently making on an ISDN telephone. You can then take this call with the same ISDN
telephone. This means that you can normally plug in and unplug an ISDN telephone on the
S0bus at several connecting boxes in the course of a conversation without losing the call.
The transfer musttake place within the specified time of approximately three minutes.Since
you are taking the call with the same ISDN telephone, the PBX ignores an entered code
digit.
For information on how to park or unpark a call on your ISDN telephone (or another piece of
ISDN equipment), refer to the manual of the respective equipment (usually menu querying).
The function is also often referred to as TP or Terminal Portability.
To make a query in the room without your calling partner being able to hear you, you can
mute the conversation for as long as you like on DTMF telephones.
Muting a call:
Follow-me has the same function as permanent call forwarding to internal extensions, which
is also described in this manual. The difference is that you set it up at the respective tele-
phone and not at the telephone from which calls are rerouted. This means that you can go
from office to office, for example and take your calls with you.
Parking/switching over on bus function key on the ISDN telephone cannot be used 씮
The telephone uses this key to park on the internal S0bus not on the external S0port (see
ChapterParking and Transferring on internal S0bus on page B-18).
1. 23. 2 Using the PBX to take a parked external conversation
b f 68 g
Internal dial tone Call
hEngaged tone 씮you have exceeded the maximum permissible parking duration
(after three minutes, the exchange disconnects the call) or no call is parked.
To take a call that was parked using code digits 씮the corresponding code digits must
be entered in the PBX (see Chapter Setting the Code Digits for Parking on the Bus on
page I-44 in the Installation and Configuration Manual).
1. 24 Parking and Transferring on internal S0bus
1. 25 Muting (with DTMF telephones)
g F F g
Call Muting: Return to conversation Call
1. 26 Follow-me (taking calls to other internal telephones with you)

Operator's Manual B-19
Operation
Setting up/deactivating follow-me:
Your PBX provides you with a variety of options for setting up call forwarding. You can redi-
rect all the calls to an individual telephone as well as all the ones to a calling number (MSN/
DDI). Call forwarding to an external telephone is implemented by entering directly a target
calling number or by choosing a previously programmed abbreviated dialling number. You
can program call forwarding by telephone from an internal phone or by remote programming
from any external telephone set. There are three types of call forwarding:
b 7 Q 20 n
Target
telephone Universal password Internal calling number of telephone to be diverted, e.g. 33
or
00
for deactivate
hFor general information on programming by telephone and the tones that are issued
in this connection, refer to Page B-5
For redirected external calls, the target telephone needs outgoing access.
You can also deactivate follow-me from the redirected telephone by punching in
7 2 15 0
Using Follow-me, you can also switch calls from several subscribers to the telephone
closest to you.
Caution! If you set follow-me for an extension, this will deactivate this extension's call for-
warding if it is set.
1. 27 Call forwarding (redirecting calls to internal and external telephones)
Permanent (CFU) The call is redirected straight away.
On busy (CFB) The call is redirected straight away if the corresponding telephones are engaged.
On no reply
(CFNR) If nobody replies at any of the telephones within the specified time, the call is redirected.
hFor general information on programming by telephone and the tones that are issued
in this connection, refer to Page B-5
It is not possible to program call forwarding to an internal target telephone from an exter-
nal one.
For redirected external calls, the target telephone needs outgoing access.
Important! To prevent unauthorized persons from programming call forwarding on your
system from an external phone, you should change the external password (Chapter
Changing the Password on page I-72 in the Installation and Configuration Manual) or limit
the authorization for programming call forwarding to activate/deactivate/enter abbreviated
dialling number (as delivered, programming from an external telephone is prohibited see
Chapter Allowing external programming on page I-71 in the Installation and Configuration
Manual).

B-20 Operator's Manual
Operation
Permanently redirecting an individual telephone:
Activation/deactivation or switching over (the set target calling number is retained):
Carrying out from an external telephone (entering digits using a DTMF telephone/
DTMF generator):
1. 27. 1 Extension call forwarding (redirect telephone)
b 7 Q 12 n
Telephoneto be
redirected Universal password Internal calling number of target telephone, e.g. 33
or
0 r
Access digit and external calling
number of target telephone
or
k
Number of abbreviated dialling memory
b 7 Q 15 0
Telephonetobe
redirected Universal password For deactivate
or
1
For activate permanently
or
2
For activation on busy
or
3
For activation on no reply
b r f 8 W fNow use the same programming digits as
from the internal telephone but enter after
the
12or the 15the internal calling
number of the telephone to be redirected,
e.g.
12 33 166for permanent
call forwarding of extension 33 to abbrevi-
ated dialling number 166.
Exter-
nal
phone
Own remote
switching
and pro-
gramming
MSN/DDI
Brief
tone
Exter-
nal
pass-
word
External
acknowledge-
ment tone
(1-second con-
tinuous tone)