Yealink SIP-T27G Administrator's Guide

Audio Features
148
Touch Tone
If you enable touch tone and tap the keys (except the off-hook key), the phone will produce a sound when it is not
on the dialing/pre-dialing screen and not in a call.
It is only applicable to CP920 phones.
Topic
Touch Tone Configuration
Touch Tone Configuration
The following table lists the parameter you can use to configure the touch tone.
Parameter
features.touch_tone <y0000000000xx>.cfg
Description
It enables or disables the touch tone.
Permitted
Values
0-Disabled
1-Enabled, when you tap the keys (except the Off-hook key), the phone will produce a sound when it
is not on the dialing/pre-dialing screen and not in a call.
Default
1
Supported
Devices
CP920
Web UI
Features > Audio > Touch Tone
Ring Tones
Ring tones are used to play for incoming calls. You can select a built-in ring tone or a custom ring tone for the
phone system or specific line registration. To set the custom ring tones, you need to upload the custom ring tones to
the IP phone in advance.
You can also specify a period of time after which the phone will stop ringing if the call is not answered.
Topics
Custom Ringtone Limit
Ringtone Configuration
Custom Ringtone Limit
The ring tone format must meet the following:
Phone Model Format Single File Size
T57W/T54W/T48U/T48S/T46U/T46S .wav <=8MB
T48G/T46G/T29G .wav
<=8MB (2.4MB of space should be
reserved for the phone)
T53W/T53/T43U/T42U/T42S/T41S/T42G/T41P/T40P/T40G
/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920
.wav <=100KB
Note: The ring tone file must be in PCMU/PCMA audio format, mono channel, 8K sample rate, and 16-bit resolution.

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