Yealink SIP-T2 Series User Manual

Administrator’s Guide for SIP-T2 Series/T19(P) E2/T4 Series IP Phones
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5. Press the Save soft key to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
6. Click OK to reboot the phone.
DHCP provides a framework for passing information to TCP/IP network devices. Network and
other control information are carried in tagged data items that are stored in the options field of
the DHCP message. The data items themselves are also called options.
DHCP can be initiated by simply connecting the IP phone with the network. IP phones broadcast
DISCOVER messages to request the network information carried in DHCP options, and the
DHCP server responds with specific values in corresponding options.
The following table lists common DHCP options supported by IP phones.
Parameter
DHCP Option
Description
Subnet Mask
1
Specify the client’s subnet mask.
Time Offset
2
Specify the offset of the client's subnet in seconds
from Coordinated Universal Time (UTC).
Router
3
Specify a list of IP addresses for routers on the
client’s subnet.
Time Server
4
Specify a list of time servers available to the client.
Domain Name
Server
6
Specify a list of domain name servers available to
the client.
Log Server
7
Specify a list of MIT-LCS UDP servers available to
the client.
Host Name
12
Specify the name of the client.
Domain Server
15
Specify the domain name that client should use
when resolving hostnames via DNS.
Broadcast Address
28
Specify the broadcast address in use on the
client's subnet.
Network Time
Protocol Servers
42
Specify a list of NTP servers available to the client
by IP address.
Vendor-Specific
Information
43
Identify the vendor-specific information.
Vendor Class
Identifier
60
Identify the vendor type.
TFTP Server Name
66
Identify a TFTP server when the 'sname' field in

Yealink SIP-T2 Series Specifications

General

Brand	Yealink
Model	SIP-T2 Series
Category	IP Phone
Language	English