Yealink SIP-T27G Administrator's Guide

Account Settings
296
Note: It is used in conjunction with the parameter "account.X.reg_failed_retry_max_time" to determine
how long to wait. The algorithm is defined in RFC 5626. We recommend that you set this value to an
integer between 10 to 120 if needed. If the values of this parameter and the parameter "accoun-
t.X.reg_failed_retry_max_time" are set to 0, the interval configured by "account.X.reg_fail_retry_inter-
val" will be used.
Permitted
Values
Integer greater than or equal to 0
Default
0
Parameter
account.X.reg_failed_retry_max_time
[1]
<MAC>.cfg
Description
It configures the maximum time to wait (in seconds) for the phone to retry to re-register after the
account registration fails.
Note: It is used in conjunction with the parameter "account.X.reg_failed_retry_min_time" to determine
how long to wait. The algorithm is defined in RFC 5626. We recommend that you set this value to an
integer between 60 to 1800 if needed. If the values of this parameter and the parameter "accoun-
t.X.reg_failed_retry_min_time" are set to 0, the interval configured by "account.X.reg_fail_retry_inter-
val" will be used.
Permitted
Values
Integer greater than or equal to 0
Default
60
[1]
X is the account ID. For T57W/T54W/T48U/T48S/T48G/T46U/T46S/T46G/T29G, X=1-16; for
T53W/T53/T43U/T42G/T42U/T42S, X=1-12; for T41P/T41S/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21
(P) E2, X=1-2; for T19(P) E2/CP920, X=1.
[2]
Y is the server ID. Y=1-2.
PSTN Account Configuration
The following table lists the parameters you can use to register the PSTN account.
Parameter
pstn.account.X.enable
[1]
<MAC>.cfg
Description
It enables or disables the PSTN account X.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Supported
Devices
CP920
Web UI
Account > Register > Line Active
Phone UI
Menu > Settings > Advanced Settings (default password: admin) > Accounts > Active Line
Parameter
pstn.account.X.label
[1]
<MAC>.cfg
Description
(Optional.) It configures the label to be displayed on the LCD screen for PSTN account X.
Permitted
Values
String within 99 characters
Default
Blank
Supported
Devices
CP920

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