User manual
1. When a phone is set to DHCP mode, the phone will send DHCP request and the DHCP
server will response and IP address is assigned
2. After half of the lease time, the phone will send the DHCP request to the DHCP server
apply for renewal
3. If the server has no response to it, the phone will send DHCP request to the server again at
75% of the lease time.
4. If the server has no response again, the phone will not send the DHCP request.
5. If the lease time is out, the phone will release the assigned IP.
22. Q: How to make the call using SRTP？
A: SRTP needs the server and the two phone parties support, also you should enable it in the
phone webpageAccountAdvancedVoice Encryption (SRTP) on both call parties.
23. Q: What is XML browser feature?
A: With xml browser feature, customers can personalize their features，such as weather
forecast inquiry, stock information, date inquiry, access to address book, Google search,
news browsing, music playing, terminal parameters configuration and other functions.
For more details, please refer to the document of T2 series,
Using XML Browser Feature on Yealink SIP-T2XP phones Rev_61.0
24. Q: Why MWI (Message Waiting Indication) is not working?
A: You can use the WireShark tool to capture the trace and check whether IP PBX has sent a
standard sip notify message to the device.
25. Q: Where can I get the release note for the firmware upgrading?
A: You can go and get it from below link, and chose the model of the phone.
http://www.yealink.com/SupportDownloadfiles.aspx?CateId=147&flag=142
26. Q: How to use the remote phonebook?
A: You should first place the remote phonebook file on the server, and fill in the file’s
address into the Phone book URL on Contacts Remote Phone Book of Web UI of the phone.
And give it a name in the “phone book name” field.