What’s in the Box
Your LH270 or
LH275 Headset
205mAh 3.75v
Lithium-Ion Battery
Battery
Compartment Cover
8.5v AC Adaptor
RJ-9 Phone Cord
Type A-to-Mini
USB Cord
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Contents:
1.
Product diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Connecting to a telephone with a headset port . . . . . . . . . . . . . . . . 6
2.2 Connecting to a telephone without a headset port . . . . . . . . . . . . . . . 6
2.3 Connecting a handset lifter . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Connecting an electronic hookswitch (EHS) cable . . . . . . . . . . . . . . . 7
2.5 Connecting to a computer USB port . . . . . . . . . . . . . . . . . . . . . . 7
2.6 Replacing the earpad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Making and receiving calls . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Making an outgoing call in telephone mode . . . . . . . . . . . . . . . . . . 7
3.3 Receiving an incoming call in telephone mode . . . . . . . . . . . . . . . . 8
3.4 Making an outgoing call in USB/PC mode . . . . . . . . . . . . . . . . . . . 8
3.5 Making a call using UniBase™ Mode . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Adjusting the ring volume . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.7 Muting the headset volume . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 Headset microphone volume setting . . . . . . . . . . . . . . . . . . . . . 9
3.9 Adjusting headset listening volume . . . . . . . . . . . . . . . . . . . . . . 9
3.10 Out of range and reconnection . . . . . . . . . . . . . . . . . . . . . . . . 9
3.11 Battery level indication . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.12 Training mode and making a conference call . . . . . . . . . . . . . . . . 10
3.13 Overview of audio signals . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.14 Registering a new headset to the base . . . . . . . . . . . . . . . . . . . 11
3.15 Using with Skype for Business . . . . . . . . . . . . . . . . . . . . . . . . 12
3.16 Controlling the Automatic Answer feature for calls . . . . . . . . . . . . . . 12
4.
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.
Health and safety instructions . . . . . . . . . . . . . . . . . . . . . . . 13
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