Yealink SIP-T52S Administrator's Guide

Appendix
1009
Appendix
Appendix A: Glossary
802.1x--an IEEE Standard for port-based Network Access Control (PNAC). It is a part of the IEEE
802.1 group of networking protocols. It provides an authentication mechanism to devices
wishing to attach to a LAN or WLAN.
ACS (Auto Configuration server)--responsible for auto-configuration of the Central Processing
Element (CPE).
Cryptographic Key--a piece of variable data that is fed as input into a cryptographic algorithm
to perform operations such as encryption and decryption, or signing and verification.
DHCP (Dynamic Host Configuration Protocol)--built on a client-server model, where
designated DHCP server hosts allocate network addresses and deliver configuration parameters
to dynamically configured hosts.
DHCP Option--can be configured for specific values and enabled for assignment and
distribution to DHCP clients based on server, scope, class or client-specific levels.
DNS (Domain Name System)--a hierarchical distributed naming system for computers, services,
or any resource connected to the Internet or a private network.
EAP-MD5 (Extensible Authentication Protocol-Message Digest Algorithm 5)--only provides
authentication of the EAP peer to the EAP server but not mutual authentication.
EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) –provides for mutual
authentication, integrity-protected cipher suite negotiation between two endpoints.
PEAP-MSCHAPv2 (Protected Extensible Authentication Protocol-Microsoft Challenge
Handshake Authentication Protocol version 2) –provides for mutual authentication, but does
not require a client certificate on the IP phone.
FAC (Feature Access Code)--special patterns of characters that are dialed from a phone keypad
to invoke particular features.
HTTP (Hypertext Transfer Protocol)--used to request and transmit data on the World Wide
Web.
HTTPS (Hypertext Transfer Protocol over Secure Socket Layer)--a widely-used communications
protocol for secure communication over a network.
IEEE (Institute of Electrical and Electronics Engineers)--a non-profit professional association
headquartered in New York City that is dedicated to advancing technological innovation and
excellence.
LAN (Local Area Network)--used to interconnects network devices in a limited area such as a

Yealink SIP-T52S Specifications

General

Touchscreen	-
Display diagonal	2.8 \
Backlight display	Yes
Display resolution	320 x 240 pixels
Lines quantity	16 lines
Phonebook capacity	1000 entries
Number of VoIP accounts	12
AC adapter input voltage	100 - 240 V
Bluetooth version	2.1+EDR
Security algorithms	802.1x RADIUS, HTTPS, MD5
Ethernet LAN interface type	Gigabit Ethernet
USB 2.0 ports quantity	1
Ethernet LAN (RJ-45) ports	2
Mounting	Desk/Wall
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Voice codecs	G.722, G.723, G.723.1, G.726, OPUS, iLBC
Volume control	Digital
Operating temperature (T-T)	-10 - 40 °C
Operating relative humidity (H-H)	10 - 95 %
Cables included	LAN (RJ-45)
Number of handles included	1 pc(s)
Front camera	No
Operating system installed	Linux

Weight and Dimensions

Depth	212 mm
Width	211.6 mm
Height	166.8 mm