Yealink SIP-T2 SERIES Administrator's Manual page 95

3. Enter the desired value in the IPv4 Pri.DNS and IPv4 Sec.DNS field respectively.
4. Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
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
Subnet Mask
Time Offset
Router
Time Server
Domain Name
Server
Log Server
Host Name
Domain Server
Broadcast
Address
Network Time
Protocol
Servers
Vendor-Specific
Information
Vendor Class
1 Specify the client's subnet mask.
Specify the offset of the client's subnet in
2 seconds from Coordinated Universal Time
(UTC).
Specify a list of IP addresses for routers on the
3
client's subnet.
Specify a list of time servers available to the
4
client.
Specify a list of domain name servers
6
available to the client.
Specify a list of MIT-LCS UDP servers
7
available to the client.
12 Specify the name of the client.
Specify the domain name that client should
15
use when resolving hostnames via DNS.
Specify the broadcast address in use on the
28
client's subnet.
Specify a list of NTP servers available to the
42
client by IP address.
43 Identify the vendor-specific information.
60 Identify the vendor type.
Getting Started
Description
73