Yealink SIP-T27G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
383
Web UI
Account > Basic > Auto Answer Mute
Phone UI
Menu > Features > Auto Answer > Auto Answer Mute
[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]
X is the PSTN account ID. X=1-2.
Anonymous Call Rejection
Anonymous call rejection allows IP phone to automatically reject incoming calls from callers whose identity has
been deliberately concealed.
Anonymous call rejection can be performed locally or on the server. When performing anonymous call rejection on
local, the phone sends the server a status message ”Status-Line: SIP/2.0 433 Anonymity Disallowed”. If performing
Anonymous call rejection on a specific server, you may need to configure anonymous call rejection on code and off
code to activate and deactivate server-side anonymous call rejection feature.
Topic
Anonymous Call Rejection Configuration
Anonymous Call Rejection Configuration
The following table lists the parameters you can use to configure anonymous call rejection.
Parameter
account.X.reject_anonymous_call
[1]
<MAC>.cfg
Description
It triggers the anonymous call rejection feature to on or off.
Permitted
Values
0-Off
1-On, the phone will automatically reject incoming calls from users enabled anonymous call feature.
The anonymous user’s phone screen presents “Anonymity Disallowed”.
Default
0
Web UI
Account > Basic > Local Anonymous Rejection
Phone UI
Menu > Features > Anonymous Call > Local Anonymous Rejection
Parameter
features.anonymous_response_code <y0000000000xx>.cfg
Description
It configures the code the phone responds with to the server when it receives an anonymous call.
Note: It works only if “account.X.reject_anonymous_call“ is set to 1 (On).
Permitted
Values
Integer from 0 to 65535
Default
433
Parameter
account.X.anonymous_reject_oncode
[1]
<MAC>.cfg
Description
It configures the anonymous call rejection on code.
The phone will send the code to activate anonymous call rejection feature on server-side when you
activate it on the phone.
Permitted
Values
String within 32 characters

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