Yealink SIP-T23G Administrator's Guide

Network Configurations
27
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv4 >
DHCP IPv4 Client > Static DNS (Enabled) > Pri.DNS
Parameter
static.network.secondary_dns
[1]
<y0000000000xx>.cfg
Description
It configures the secondary IPv4 DNS server for the wired network.
Note: It works only if “static.network.ip_address_mode” is set to 0 (IPv4) or 2 (IPv4 & IPv6). In the
DHCP environment, you need to make sure “static.network.static_dns_enable" is set to 1 (On).
Permitted
Values
IPv4 Address
Default
Blank
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Network > Basic > IPv4 Config > Static DNS > Secondary DNS
Other Phones:
Network > Basic > IPv4 Config > Static IP Address > Secondary DNS
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Network > WAN Port > IPv4 > Static IP > Sec.DNS
In the DHCP environment:
Menu > Advanced (default password: admin) > Network > WAN Port > IPv4 > DHCP > Static DNS
(Enabled) > Sec.DNS
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv4 >
Static IPv4 Client > Sec.DNS
In the DHCP environment:
Menu > Settings > Advanced Settings (default password: admin) > Network > WAN Port > IPv4 >
DHCP IPv4 Client > Static DNS (Enabled) > Sec.DNS
[1]
If you change this parameter, the phone will reboot to make the change take effect.
IPv6 Wired Network Configuration
If you configure the network settings on the phone for an IPv6 wired network, you can set up an IP address for the
phone by using SLAAC (ICMPv6), DHCPv6 or by manually entering an IP address. Ensure that your network envir-
onment supports IPv6. Contact your ISP for more information.
When you enable both SLAAC and DHCPv6 on the phone, the server can specify the IP phone to obtain the IPv6
address and other network settings either from SLAAC or from DHCPv6, if the SLAAC server is not working, the
phone will try to obtain the IPv6 address and other network settings via DHCPv6.
The following table lists the parameters you can use to configure IPv6 wired network.
Parameter
static.network.ipv6_internet_port.type
[1]
<y0000000000xx>.cfg
Description
It configures the Internet port type for IPv6 wired network.
Note: It works only if “static.network.ip_address_mode” is set to 1 (IPv6) or 2 (IPv4 & IPv6).
Permitted
Values
0-DHCP
1-Static IP
Default
0
Web UI
T57W/T54W/T53W/T53/T48U/T46U/T43U/T42U:
Network > Basic > IPv6 Config > Configuration Type

Yealink SIP-T23G Specifications

General

Backlight	Yes
Voice codecs	G.711a, G.722.2, G.726, G.729ab, iLBC
Volume control	Digital
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Silver
Display resolution	132 x 64 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	3
Networking standards	IEEE 802.1p, IEEE 802.1Q, IEEE 802.1x, IEEE 802.3af
Ethernet LAN (RJ-45) ports	2
AC adapter input voltage	100 - 240 V
AC adapter output current	0.6 A
AC adapter output voltage	5 V
Power consumption (typical)	1.56 W
Number of handles included	- pc(s)
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %

Weight and Dimensions

Depth	188 mm
Width	209 mm
Height	150 mm