Yealink SIP-T27G Administrator's Guide

Account Settings
310
When priorities are equal, weight is used to differentiate the preference. Higher weight is more pre-
ferred.
Permitted
Values
Integer from 0 to 65535
Default
0
Parameter
dns_cache_srv.X.ttl
[2]
<y0000000000xx>.cfg
Description
It configures the time interval (in seconds) that SRV record X may be cached before the record should
be consulted again.
Permitted
Values
Integer from 30 to 2147483647
Default
300
Parameter
dns_cache_a.X.name
[2]
<y0000000000xx>.cfg
Description
It configures the domain name in A record X.
Permitted
Values
Domain name
Default
Blank
Parameter
dns_cache_a.X.ip
[2]
<y0000000000xx>.cfg
Description
It configures the IP address that the domain name in A record X maps to.
Permitted
Values
IP address
Default
Blank
Parameter
dns_cache_a.X.ttl
[2]
<y0000000000xx>.cfg
Description
It configures the time interval (in seconds) that A record X may be cached before the record should be
consulted again.
Permitted
Values
Integer from 30 to 2147483647
Default
300
Parameter
static.network.dns.ttl_enable
[3]
<y0000000000xx>.cfg
Description
It enables or disables the phone to use TTL (Time To Live) in the A record.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Parameter
static.network.dns.last_cache_expired <y0000000000xx>.cfg
Description
It configures the validity period of the expired DNS cache.
Note: It works only if "static.network.dns.last_cache_expired.enable" is set to 1 (Enabled).
Permitted
Values
Integer from 0 to 65535
0-the expired DNS cache can only be used once. After using, the phone will perform a DNS query
again.
1 to 65535-the phone will use the expired DNS cache during the specified period. After that, the
phone will perform a DNS query again.

Yealink SIP-T27G Specifications

General

Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black, Gold
Wall mountable	Yes
Display diagonal	3.66 \
Display resolution	240 x 120 pixels
RJ-9 ports quantity	2
USB 2.0 ports quantity	1
Voice codecs	CNG, G.711, G.722, G.723.1, G.726, G.729, G.729ab, VAD, iLBC
Dual-Tone Multi-Frequency (DTMF) modes	SIP info
Lines quantity	8 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Bluetooth	-
Security algorithms	AES, MD5
Networking standards	IEEE 802.1Q, IEEE 802.1p, IEEE 802.1x, IEEE 802.3af
Ethernet LAN interface type	Gigabit Ethernet
Volume control	Digital
Operating temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Harmonized System (HS) code	85171800

Weight and Dimensions

Depth	210 mm
Width	265 mm
Height	170.5 mm