Yealink SIP-T27G Administrator's Guide

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
558
Source
Device
Source IP Source Port
Destination
Device
Destination
IP
Destination
Port (Listen-
ing port)
Protocol
Description of des-
tination port
server from DHCP server.
1024~65535
LDAP
Server
IP address
of LDAP
server
Determined
by des-
tination
device.
TCP
LDAP protocol port, it is
used to obtain the contact
information from LDAP
server.
1024~65535 NTP Server
IP address
of NTP
server
123 UDP
NTP protocol port, it is
used to synchronize time
from NTP time server.
1024~65535
Syslog
Server
IP address
of syslog
server
514 UDP
Syslog protocol port, it is
used for IP phones to
upload syslog inform-
ation to syslog server.
IP
phones
IP address of
IP phones
1024~65535 PNP Server
IP address
of PNP
server
(Default
value:
224.0.1.75)
5059 UDP/TCP
Protocol port, it is used to
obtain the URL of updat-
ing file from PNP server.
Multipaging Multipaging
65000
65001
PC
IP address of
PC
Determined
by the des-
tination
device.
IP phones
IP address
of IP
phones
1~65535 TCP
HTTP port (default value:
80)
1~65535 TCP
HTTP port (default value:
443)
SIP
Server
IP address of
SIP Server
1024~65534 UDP/TCP
SIP protocol port, it is
used for signaling inter-
action with SIP server.
IP phone
of voice
gateway
IP address of
IP phone or
voice gate-
way
2~65535 UDP
RTP protocol port, it is
used by destination
device to send or receive
audio stream.
TR-069
Server
IP address of
TR-069
Server
1024~65535 TCP
TR-069 protocol port, it is
used to communicate
with TR-069 server.
Password Issues
Restore the administrator password
Factory reset can restore the original password. All custom settings will be overwritten after reset.
Related Topic
Resetting the IP phone to Default Factory Settings
The web screen displays " Default password is in use. Please change!"
The web screen prompts "Default password is in use. Please change!" message when the default password is in
use. Click the warning message to change the password.

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