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Yealink SIP-T21P User Manual

Yealink SIP-T21P
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Regulatory Notices
129
Contact your Yealink Authorized Reseller for information about service agreements
applicable to your product.
TO 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 OR IN
CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE,
FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF YEALINK OR ITS AUTHORIZED
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH AMAGES, AND LIMITS ITS
LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE RICE PAID, AT
YEALINK’S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE
AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.
Save these instructions. Read these safety instructions before use!
The following basic safety precautions should always be followed to reduce risk of fire,
electrical shock, and other personal injury.
General Requirements
Before you install and use the device, read the safety instructions carefully
and observe the situation during operation.
During the process of storage, transportation, and operation, please always
keep the device dry and clean.
During the process of storage, transportation, and operation, please avoid
collision and crash of the device.
Please attempt not to dismantle the device by yourself. In case of any
discrepancy, please contact the appointed maintenance center for repair.
Without prior written consent, no organization or individual is permitted to
make any change to the structure or the safety design of the device. Yealink
is under no circumstance liable to consequences or legal issues caused by
such changes.
Please refer to the relevant laws and statutes while using the device. Legal
rights of others should be respected as well.
Environmental Requirements
Place the device at a well-ventilated place. Do not expose the device under
direct sunlight.
Keep the device dry and free of dusts.
Place the device on a stable and level platform.

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Yealink SIP-T21P Specifications

General IconGeneral
Display132 x 64-pixel graphical LCD
Network10/100 Mbps Ethernet
SIP Accounts2
Wall MountableYes
Audio FeaturesHD Voice
ProtocolsSIP v1 (RFC2543), v2 (RFC3261)
Voice CodecsG.711(A/μ), G.729AB, G.726, G.722
Phonebook1000 entries
Call FeaturesCall hold, call waiting, call transfer, call forward, 3-way conferencing
SecuritySRTP, TLS, 802.1x, HTTPS
Ethernet Ports2 x RJ45 10/100 Mbps
Power SupplyPower over Ethernet (PoE) or optional power adapter
Operating Humidity10% to 90% (non-condensing)
LanguagesSupports multiple languages
PoEYes (802.3af)
Operating Temperature-10°C to 50°C

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