Yealink SIP-T27G Administrator's Guide

Advanced Features
484
Values 1-Enabled
Default
0
Parameter
account.X.sub_fail_retry_interval
[1]
<MAC>.cfg
Description
It configures the interval (in seconds) for the phone to retry to re-subscribe when subscription fails.
Permitted
Values
Integer from 0 to 3600
Default
30
Parameter
account.X.subscribe_mwi_to_vm
[1]
<MAC>.cfg
Description
It enables or disables the phone to subscribe to the message waiting indicator for the voice mail num-
ber.
Note: It works only if “account.X.subscribe_mwi” is set to 1 (Enabled) and “voice_mail.number.X” is
configured.
Permitted
Values
0-Disabled, the phone will subscribe to the message waiting indicator to a specific account.
1-Enabled
Default
0
Web UI
Account > Advanced > Subscribe MWI to Voice Mail
Parameter
voice_mail.number.X
[1]
<MAC>.cfg
Description
It configures the voice mail number.
Permitted
Values
String within 99 characters
Default
Blank
Web UI
Account > Advanced > Voice Mail
Phone UI
Menu > Message > Voice Mail > Set Voice Mail Code
Parameter
account.X.display_mwi.enable
[1]
<MAC>.cfg
Description
It enables or disables the MWI alert to indicate that you have an unread voice mail message.
Permitted
Values
0-Disabled
1-Enabled
Default
1
Web UI
Account > Advanced > Voice Mail Display
Parameter
features.voice_mail_alert.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to pop up the message when receiving the same amount of new
voicemails.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Parameter
features.voice_mail_key_lamp_field.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to subscribe to the message waiting indicator for the voice mail num-
ber when configuring a Voice Mail dsskey.

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