Yealink SIP-T27G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
295
Description
It enables or disables the phone to send requests to the outbound proxy server.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Account > Register > Enable Outbound Proxy Server
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Accounts > Outbound Status
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Accounts > Outbound Status
Parameter
account.X.outbound_proxy.Y.address
[1][2]
<MAC>.cfg
Description
It configures the IP address or domain name of the outbound proxy server.
Note: It works only if “account.X.outbound_proxy_enable” is set to 1 (Enabled). To use an outbound
proxy server address, “account.X.sip_server.Y.outbound_proxy_enable” should be set to 1 (Enabled).
Permitted
Values
String within 256 characters
Default
Blank
Web UI
Account > Register > Outbound Proxy Server Y
Phone UI
Color Screen Phones:
Menu > Advanced (default password: admin) > Accounts > Account X > Outbound ProxyY
Black-and-white Screen Phones:
Menu > Settings > Advanced Settings (default password: admin) > Accounts > Outbound ProxyY
Parameter
account.X.outbound_proxy.Y.port
[1][2]
<MAC>.cfg
Description
It configures the port of the outbound proxy server.
Note: It works only if “account.X.outbound_proxy_enable” is set to 1 (Enabled).
Permitted
Values
Integer from 0 to 65535
Default
5060
Web UI
Account > Register > Outbound Proxy Server Y > Port
Parameter
account.X.reg_fail_retry_interval
[1]
<MAC>.cfg
Description
It configures the re-registration period (in seconds) after the account registration fails.
Note: It works only if "account.X.reg_failed_retry_min_time" and "account.X.reg_failed_retry_max_
time" are set to 0.
Permitted
Values
Integer from 0 to 1800
Default
30
Web UI
Account > Advanced > SIP Registration Retry Timer (0~1800s)
Parameter
account.X.reg_failed_retry_min_time
[1]
<MAC>.cfg
Description
It configures the base time to wait (in seconds) for the phone to retry to re-register after the account
registration fails.

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