Yealink SIP-T27G Administrator's Guide

Audio Features
182
[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]
If you change this parameter, the phone will reboot to make the change take effect.
Suppress DTMF Display
Suppress DTMF display allows the phones to suppress the display of DTMF digits during an active call. DTMF digits
are displayed as “*” on the phone screen. Suppress DTMF display delay defines whether to display the DTMF digits
for a short period of time before displaying as “*”.
Topic
Suppress DTMF Display Configuration
Suppress DTMF Display Configuration
The following table lists the parameters you can use to configure the suppress DTMF display.
Parameter
features.dtmf.hide <y0000000000xx>.cfg
Description
It enables or disables the phone to suppress the display of DTMF digits during an active call.
Permitted
Values
0-Disabled
1-Enabled, the DTMF digits are displayed as asterisks.
Default
0
Web UI
Features > General Information > Suppress DTMF Display
Parameter
features.dtmf.hide_delay <y0000000000xx>.cfg
Description
It enables or disables the phone to display the DTMF digits for a short period before displaying aster-
isks during an active call.
Note: It works only if “features.dtmf.hide” is set to 1 (Enabled).
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Features > General Information > Suppress DTMF Display Delay
Transfer via DTMF
Call transfer is implemented via DTMF on some servers. The IP phone sends specified DTMF digits to the server for
transferring calls to third parties.
Topic
Transfer via DTMF Configuration
Transfer via DTMF Configuration
The following table lists the parameters you can use to configure the transfer via DTMF.
Parameter
features.dtmf.replace_tran <y0000000000xx>.cfg
Description
It enables or disables the phone to send designated DTMF sequences for transfer function when
pressing the Tran/Transfer soft key or TRAN/TRANSFER key.
Permitted
Values
0-Disabled
1-Enabled

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