Yealink SIP-T27G Administrator's Guide

Security Features
120
Web UI
Settings > Auto Provision > Self-Define RSA Pri Key
Parameter
static.auto_provision.rsa_pri_key.delete <y0000000000xx>.cfg
Description
It deletes the self-define RSA private key file.
Permitted
Values
http://localhost/all
Default
Blank
Supported
Devices
T57W, T54W, T53W, T53, T48U, T46U, T43U, T42U, T48S, T46S, T42S, T41S, T27G and CP920
[1]
X is an activation code ID. X=1-50.
[2]
If you change this parameter, the phone will reboot to make the change take effect.
Incoming Network Signaling Validation
Yealink phones support the following three optional levels of security for validating incoming network signaling:
l
Source IP address validation: ensure the request is received from an IP address of a server belonging to the set
of target SIP servers.
l
Digest authentication: challenge requests with digest authentication using the local credentials for the asso-
ciated registered account.
l
Source IP address validation and digest authentication: apply both of the above methods.
Topic
Incoming Network Signaling Validation Configuration
Incoming Network Signaling Validation Configuration
The following table lists the parameters you can use to configure the incoming network signaling validation.
Parameter
sip.request_validation.source.list <y0000000000xx>.cfg
Description
It configures the name of the request method for which source IP address validation will be applied.
Example:
sip.request_validation.source.list = INVITE, NOTIFY
Permitted
Values
INVITE, ACK, BYE, REGISTER, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
REFER, PRACK, UPDATE
Default
Blank
Parameter
sip.request_validation.digest.list <y0000000000xx>.cfg
Description
It configures the name of the request method for which digest authentication will be applied.
Example:
sip.request_validation.digest.list = INVITE, SUBSCRIBE
Permitted
Values
INVITE, ACK, BYE, REGISTER, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE, NOTIFY,
REFER, PRACK, UPDATE
Default
Blank
Parameter
sip.request_validation.digest.realm <y0000000000xx>.cfg
Description
It configures the string used for the authentication parameter Realm when performing the digest

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