Sennheiser UI 770 User manual
UI 770
Universal Interface
Instruction Manual
Sennheiser Communications A/S
Industriparken 27, DK-2750 Ballerup, Denmark
www.sennheiser.com
Printed in China, Publ. 06/14, A04
CB D
E
A
China RoHS
FRESNL DE ENIT
UI 770 |1
Contents
Safety instructions ............................................................................ 2
UI 770 universal interface ................................................................ 3
Delivery includes ................................................................................ 4
Putting the UI 770 into operation .................................................. 4
Connection sockets .......................................................................4
Connection possibilities ...............................................................5
Inserting the battery ....................................................................6
Adjusting the UI 770 ....................................................................7
When is the UI 770 ready for operation? .................................9
Using the UI 770 ............................................................................... 10
Switching between the headset and the handset .............. 11
Muting the headset microphone ............................................. 11
Adjusting the sound clarity of the headset speaker ........... 11
Selecting the source – PC or telephone ................................. 11
Adjusting the volume of the headset speaker ..................... 12
Using the dictaphone output ................................................... 12
Cleaning the UI 770 ......................................................................... 12
If a problem occurs .......................................................................... 12
Accessories ........................................................................................ 14
Specifications .................................................................................... 14
Manufacturer declarations ............................................................. 15
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Safety instructions
2 | UI 770
Safety instructions
왘Please read this instruction manual carefully and completely
before using the product.
왘Always include this instruction manual when passing the
product on to third parties.
왘Do not use an obviously defective product.
Preventing damage to health and accidents
왘Do not listen at high volume levels for long periods of time to
prevent hearing damage.
왘Keep the product, accessories, small parts and packaging parts
out of reach of children and pets to prevent accidents and
choking hazards.
왘Do not use the product in situations which require special
attention.
Preventing damage to the product and malfunctions
왘Always keep the product dry and do not expose it to extreme
temperatures (hairdryer, heater, extended exposure to sun-
light, etc.) to avoid corrosion or deformation.
왘Only use attachments/accessories supplied or recommended
by Sennheiser.
왘Do not short-circuit the contacts of the product. Make sure
that no metal objects (e.g. paper clips, hair pins, earrings)
come into contact with the interfaces and contacts.
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UI 770 universal interface
UI 770 |3
Intended use/Liability
The universal interface can be used for calling and – together with
a PC (VoIP) and/or a telephone – for audio input/output and is
intended for professional office or call center use.
It is considered improper use when this product is used for any
application not named in this instruction manual.
Sennheiser does not accept liability for damage arising from
abuse or misuse of this product and its attachments/accessories.
The risk is to be borne by the user.
Sennheiser is not liable for damages to USB devices that are not
consistent with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of
connection due to flat batteries.
UI 770 universal interface
The UI 770 allows you to connect:
• a standard telephone that supports handsets with a dynamic,
carbon or electret microphone
• a handset
• a headset of the Sennheiser Office or Call Center series
• a PC with a sound card or USB audio adapter (enabling you to
use the headset for VoIP and multimedia applications)
• a dictaphone for voice recording
With the UI 770, you can then switch between the headset, the
handset and the PC, set the volume of the headset speaker and
microphone and mute the headset microphone.
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Delivery includes
4 | UI 770
Delivery includes
• UI 770
• 1.5 V C-size battery (IEC LR 14)
• Telephone connecting cable
• Modular to Easy Disconnect cable
• Instruction manual
Putting the UI 770 into operation
Connection sockets
The connection sockets are located at the front and rear of the
UI 770.
1Headset socket
2Dictaphone socket
for voice recording
3Handset socket
4Phone socket
for the telephone
5Aux/PC socket
for PC connection
1
2
3
5
4
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Putting the UI 770 into operation
UI 770 |5
Connection possibilities
An overview of the connection possibilities can be found on the
fold-out page.
Connecting the headset to the UI 770
Connecting the dictaphone to the UI 770
Connecting the handset to the UI 770
Peripheral
device
Connection on the
UI 770
Connection on the
peripheral device
AHeadset Modular (RJ9) Sennheiser Communications
Easy Disconnect
BDictaphone 3.5 mm jack
3.5 mm jack,
cable depends on dictaphone
socket
CHandset Modular (RJ9) Modular (RJ9)
DPhone Modular (RJ9) Depending on phone
EAux/PC Modular (RJ9) 3.5 mm jack
AConnect the modular plug of the adapter cable to the headset
socket on the UI 770 until it locks in place.
BConnect the 3.5 mm jack plug of the dictaphone connecting
cable to the dictaphone socket on the UI 770 until it locks into
place. Connect the 3.5 mm jack plug to your dictaphone.
CPull the modular plug of the handset cable out of the telephone
and connect it to the handset socket on the UI 770 until it locks
into place.
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Putting the UI 770 into operation
6 | UI 770
Connecting the telephone to the UI 770
Connecting the PC to the UI 770
Inserting the battery
When inserted into the UI 770, the battery has a service life of
approx. one year. Under normal use, it is recommended to replace
the battery once a year.
왘Remove the lower rear part of the housing. Use the supplied
screw to tamper-proof the battery compartment (which may
be mandatory in some countries).
왘Insert the battery as shown and replace the lower rear part of
the housing.
DConnect one of the two modular plugs of the supplied tele-
phone connecting cable to the phone socket until it locks into
place. Connect the second modular plug to the handset socket
on your telephone.
Even with the UI 770 connected, you can use all functions of
your telephone as usual. To make a call, lift the handset and dial
a phone number. To end a call, replace the handset. The ”hands-
free conversation” function can also be used as usual.
EConnect the modular plug of the PC
connecting cable to the Aux/PC socket
on the UI 770 until it locks into place.
Connect the two jack plugs to your PC
sound card as shown.
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Putting the UI 770 into operation
UI 770 |7
Adjusting the UI 770
Use the switches at the bottom of the housing to adjust the
UI 770.
UI 770 Function of the switch/control
1ABC switch Adjusts a clear dial tone (wiring)
2Microphone
volume control
Adjusts the volume of the headset micro-
phone (position 1-9)
3EU switch Limits the speaker volume (according to the
EU Noise Directive 2003/10/EC)
1
3
2
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Putting the UI 770 into operation
8 | UI 770
Adjusting a clear dial tone
왘First make sure that the handset and the headset are con-
nected correctly. The handset must be activated, i.e. the
headset/handset button (see page 10) must be in “down”
position. Check if you can hear a dial tone in the handset.
왘Press the headset/handset button to activate the headset.
Check if you can hear a dial tone in the headset.
Otherwise, set the ABC switch to the positions “A”, “B” and “C”
one after the other. In each position, check if you can hear
a dial tone.
Adjusting the volume of the headset microphone
The microphone volume control on the UI 770 allows you to adjust
the volume of the headset microphone: a soft voice is slightly
amplified and a loud voice is attenuated.
왘Adjust the telephone to a medium volume level.
왘Turn the microphone volume control to position “1”.
왘Make a call and speak into the microphone with a normal voice.
Slowly turn the microphone volume control until the other
party can hear you.
Limiting the speaker volume
The EU switch on the UI 770 allows you to limit the speaker volume
of the headset to comply with EU Directive 2003/10/EC.
왘To limit the speaker volume, move the EU switch from position
“square” to “triangle”.
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