Yealink SIP-T53W Administrator's Guide

Account Settings
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l If the configured time interval is elapsed, the phone will attempt to perform a DNS query again.
l If the DNS query returns a result, the phone will use the returned record from the DNS server and ignore the stat-
ically configured cache values.
When the phone is not configured with a DNS server, it will behave as follows:
l The phone attempts to resolve the domain name within the static DNS cache.
l The phone will always use the results returned from the static DNS cache.
Static DNS Cache Configuration
The following table lists the parameters you can use to configure static DNS cache.
Parameter
account.X.dns_cache_type
[1]
<MAC>.cfg
Description
It configures whether the phone uses the DNS cache for domain name resolution of the SIP server
and caches the additional DNS records.
Permitted
Values
0-Perform real-time DNS query rather than using DNS cache.
1-Use DNS cache, but do not record the additional records.
2-Use DNS cache and cache the additional DNS records.
Default
1
Parameter
account.X.static_cache_pri
[1]
<MAC>.cfg
Description
It configures whether preferentially to use the static DNS cache for domain name resolution of the SIP
server.
Permitted
Values
0-Use domain name resolution from server preferentially
1-Use static DNS cache preferentially
Default
0
Parameter
dns_cache_naptr.X.name
[2]
<y0000000000xx>.cfg
Description
It configures the domain name to which NAPTR record X refers.
Permitted
Values
Domain name
Default
Blank
Parameter
dns_cache_naptr.X.order
[2]
<y0000000000xx>.cfg
Description
It configures the order of NAPTR record X.
NAPTR record with the lower order is more preferred.
Permitted
Values
Integer from 0 to 65535
Default
0
Parameter
dns_cache_naptr.X.preference
[2]
<y0000000000xx>.cfg
Description
It configures the preference of NAPTR record X.
NAPTR record with lower preference is more preferred.
Permitted
Values
Integer from 0 to 65535
Default
0
Parameter
dns_cache_naptr.X.replace
[2]
<y0000000000xx>.cfg

Yealink SIP-T53W Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP mobile phone
Product color	Gray
Keypad illumination	Yes
Wi-Fi standards	802.11a, 802.11g, Wi-Fi 4 (802.11n)
Bluetooth version	4.2
Security algorithms	AES, HTTPS, SIPS
Networking standards	IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Supported network protocols	FTP/TFTP/HTTP/HTTPS
Dual-Tone Multi-Frequency (DTMF) modes	In-band, Out-of band, SIP info
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
AC adapter output current	1.2 A
AC adapter output voltage	5 V
Power consumption (typical)	2.3 W
Volume control	Buttons
Number of programmable keys	8
Storage temperature (T-T)	-30 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Display diagonal	3.7 \
Display resolution	360 x 160 pixels
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Number of DECT wireless handsets	4
Voice codecs	G.722, G.723.1, G.726, G.729A, G.729B, OPUS, iLBC

Weight and Dimensions

Depth	210.6 mm
Width	212 mm
Height	174.5 mm