User Guide for SIP-T42G IP Phone57Regulatory NoticesService AgreementsContact your Yealink Authorized Reseller for information on service agreements applicable to your product.Limitations of LiabilityTO THE FULL EXTENT ALLOWED BY LAW, YEALINK EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY LIABILITY,WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL,INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS,LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, OR OTHER FINANCIAL LOSS ARISING OUT OF ORIN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, ORINTERRUPTION OF ITS PRODUCTS, EVEN IF YEALINK OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OFTHE POSSIBILITY OF SUCH DAMAGES, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OFTHE PURCHASE RICE PAID, AT YEALINK’S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOTBE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.Safety InstructionsSave these instructions. Read these safety instructions before use!The following basic safety precautions should always be followed to reduce the risk of fire, electrical shock, andother personal injury.General Requirements• Before you install and use the device, read the safety instructions carefully and observe the situationduring operation.• During the process of storage, transportation, and operation, please always keep the device dry andclean.• During the process of storage, transportation, and operation, please avoid collision and crash of thedevice.• Please do not attempt to dismantle the device by yourself. In case of any discrepancy, please contact theappointed maintenance center for repair.• Without prior written consent, no organization or individual is permitted to make any change to thestructure or the safety design of the device. Yealink is under no circumstances liable to consequencesor legal issues caused by such changes.• Please refer to the relevant laws and statutes while using the device. Legal rights of others should alsobe respected as well.