Duophon AN902 Assembly Instructions Manual

Telephone Conference Set AN902

AN902 is designed for connection to all telephone end devices with acoustic adapter,
(Siemens Optipoint and Optiset) or other Telephone with Speaker and Microphone
Socket. For connecting Siemens Optiset Telephone you need Cable K900-RJ45/9Y.
(not in this Product Contents). Cable for other Telephone on request.

Assembly Instructions

Product Contents (Packaging unit) .

1 pc. VB 901 Voicebox - 2 pcs. MI 901 Microphone – 1 pc. ST902 Unit ,
1 pc. STN 901 AC adapter.

Cable:
1 pc. K900-PA5.0 Voicebox to Unit 5 m (Patchcable)
1 pc. K900-RJ45/45S Unit to acoustic adapter from Siemens Optipoint

(all Contents are available separately)

Purpose.

The telephone conference sets AN 902 are connected as supplementary units to
telephones already in place. They are characterized by the improvement of the
sound quality and flexible usage during telephone conferences. The radial outlet of
the voice box and the high level of the microphone also enable good understanding
in open rooms.

The voice box and the microphone improve the quality of hands-free speaking not
only during telephone conferences but also on the desktop next to the telephone
already in place.

If a larger number of callers are participating in the conference, you have the option

of connecting the expansion set AZ 902 to the AN 902 set, and extending the unit to

a maximum of 2 voice boxes and 6 microphones.
Every microphone has a mute button that mutes all connected microphones upon
activation. The speakers are still active so that the telephone participant can still be
heard.

By connecting the USB-sockets between the control unit and a PC/laptop (USB
cable not included in delivery), the integrated soundcard of the control unit is
activated and conversations of the conference participants can be recorded with or
without telephone connection.

Technical Information

Voicebox VB

901

Power 8 Watt Frequency range
100-12000Hz

all around Tone radiation

Measure: mm
H110 x D105

Weight 630 Gr.

Microphone MI

901

Frequency range100-12000 Hz
Connecting cable 0.5 m

Measure: mm
L77 x B68 x H25
Weight 60 Gr.

Unit ST

902

Volume control for Voicebox
2x Input für Voicebox-Set

1x Output to Telephone-Headset
1x Output USB to PC

Measure: mm
L108x B68xH35
Weight:170 Gr.
Operating voltage:

18 V DC 100 mA
(standby)

AC Adapter STN

901

Input 100 – 240 VAC 50-60 Hz

Output 18 VDC 440 mA max

Weight: mm

L80 x H60 x B30

Further conference sets and accessories from the delivery program

As an alternative to the standard microphones MI 901, the microphone MI 905 is
available for smaller spaces on the conference table. This microphone is integrated
into the infeed line of the voice box (patch cable) and replaces standard microphones.
The MI 905 has a radial receiver characteristics and thus covers the conference round
acoustically. MI 905 also possesses a mute button and an LED .

Conference Set AW901 / AW901OS

AW 901 is adequate for connection to all telephone end devices with headset connection.AW
901 OS is specifically designed for the connection to Siemens OpenStage telephone devices
with headset connection and Telekom Octophon and Swyx Phone devices.

Conference Set AW 901 H

For all telephones without headset connection. The connection of the control electronics is
done via the earpiece socket of the telephone. The telephone earpiece cable is connected
with the input socket of the control electronics. The switch of the control electronics is used to
switch optionally from normal telephone and conference operation.This way, tiresome
changing of the cables is omitted.

Microphone MI 905 (integrated infeed cable microphone)

Vers.2.12.10

Made in Germany

Expands the standard sets to up to 2 voice boxes and 6 microphones.

Expansion Set AZ 902

connection diagrams

Volume control Voicebox

to Voicebox

1

2

To Headsetsocket

USB to PC

18 V DC

AC Adapter

ON - OFF

Tele-Conference operation

or Y-Cable to PC

max 2 Boxes

Connectionsockets
Voicebox Bottomside

Mic.1

Mic.2

Mic.3

Patchcable
to the Unit

Assembly and connection options

Please insert the plug of the microphone cable into the appropriate sockets on the bottom of
the voice box. Please make sure that the snap connector plugs into the sockets.

With the 5-meter patch cable to connect the voice box to the socket 1 or 2, the control unit
see Fig. A (It may also standard patch cable with other desired lengths are used). The
socket 5 (Abb.A) of the control unit is supplied with the phone of the Acoustic adapter or the
appropriately marked socket of the phone connected. (Cable K900-RJ45/45S)

Optionally, a PC or laptop can also be connected for Internet telephony instead of the
telephone device (Connecting cable K900-Y/PC in socket see illustration A). When using
the Y-cable (K900-Y/PC) between control unit and PC, pay attention that it is not
additionally connected with the USB cable of the control unit.

Conference calls can be recorded with or without telephone participants. To do this, the
control unit must be connected to a PC with a USB-cable (not included in the scope of
delivery). The included power supply STN 901 is connected with the coax socket of the
control unit (18V DC).

With the Fox Magic Audio Recorder (available on the Internet as freeware program for
download) you can easily save conversations of the conference in good quality in mp3
format. When recording, please pay attention that the control unit and the PC are connected

with the USB cable and „USB Audio“ is set in the Fox Magic program under device “ USB
Audio“ (see ill. D). To play audio files, the USB cable must be disconnected from the control

unit, as the standard PC speaker is deactivated for the duration of the USB connection.

Start up

Switch the control unit to “on“. After successful telephone connection with the conference

partner, the connection over the voice box set is activated by pressing the hands-free

button of the telephone device, twice, if necessary. In order to achieve full duplex quality of

the conversation, the microphones should be as far away from the voice box as possible.
The closer the microphone is to the person speaking, the higher the transmitting quality is.
In order to interrupt the sound transfer to the connected telephone participant during
conversations, every microphone has a mute button that switches off all connected
microphones (including those of an expansion set) for the duration of activation.

This is signalled by the blue light LEDs on the microphones and the voice box going off.
The speaker of the voice box remains active, so that the connected conversation partner
can still be heard. The speaker volume control of the voice box is only set using the knurl on
the side of the control unit.

Insofar applicable, the volume control of the telephone device is to be set to maximum. To

support the effectiveness of the duplex regulation of the control unit, we recommend not to
adjust the volume of the voice box beyond the required volume.

Abb. A

Abb. C

3

4

(Patchcable)

(conversation recording)

Abb. B

USB Cable

2. Voicebox Set
option

K900-PA 5.0

Patchcable

Internettelefonie.

K900-Y/PC

3.Mic

optional

K900-RJ9/9

or K900-RJ9/45S

with OpenStage etc.

Conversation recording

In case of interference on the unit, the electronics switch to standby. Reset is done
with OFF and RE-INSERTING the patch cable into the voice box.

Abb. D

Unit

ST 902

Safety instructions

Do not expose the devices to direct sun radiation or other sources of heat. Protect the
devices against moisture or liquids. Never insert objects into device openings !