Specifications

Administrator’s Guide for SIP-T2xP IP Phones
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Why does the IP phone use DOB format logo file instead of popular
BMP, JPG and so on?
The IP phone only uses logo file in DOB format, as the DOB format file has a high
compression ratio (the size of the uncompressed file compared to that of the
compressed file) and can be stored in less space. Tools for converting BMP format to
DOB format are available. For more information, refer to Yealink SIP-T2 Series/T3
Series/VP530 IP Phones Auto Provisioning Guide.
How to increase or decrease the volume?
Press the volume key to increase or decrease the ringer volume when the phone is idle,
or to tune the volume of engaged audio device (handset, speakerphone or headset)
when there is an active call in progress.
What will happen if I connect both PoE cable and power adapter?
Which has the higher priority?
IP phones manufactured before February 2010 will use the power adapter preferentially,
while those made after will use PoE preferentially.
What is auto provisioning?
Auto provisioning refers to the update of IP phones, including update on configuration
parameters, local phone book, firmware and so on. You can use auto provisioning on a
single phone, but it makes more sense in mass deployment.
What is PnP?
Plug and Play (PnP) is a method for IP phones to acquire the provisioning server address.
With PnP enabled, the IP phone broadcasts the PnP SUBCRIBE message to obtain a
provisioning server address during startup. Any SIP server recognizing the message will
respond with the preconfigured provisioning server address, so the IP phone will be able
to download the CFG files from the provisioning server. PnP depends on support from a
SIP server.