Yealink SIP-T46G Administrator's Guide

Configuring Security Features
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This chapter provides information for making configuration changes for the following
security-related features:
 Transport Layer Security
 Secure Real-Time Transport Protocol
 Encrypting Configuration Files
The TLS protocol is a commonly-used protocol for providing communications privacy
and managing the security of message transmission. The TLS allows IP phones to
communicate with other remote parties and connect to the HTTPS URL for provisioning in
a way that is designed to prevent eavesdropping and tampering.
The TLS protocol is composed of two layers: the TLS Record Protocol and the TLS
Handshake Protocol. The TLS Record Protocol completes the actual data transmission
and ensures the integrity and privacy of the data. The TLS Handshake Protocol allows
the server and client to authenticate each other and negotiate an encryption algorithm
and cryptographic keys before data is exchanged.
The TLS protocol use asymmetric cryptography for authentication of key exchange,
symmetric encryption for confidentiality, and message authentication codes for
message integrity.
 Symmetric encryption: For symmetric encryption, the encryption key and the
corresponding decryption key can be told by each other. In most cases, the
encryption key and the decryption key are the same one.
 Asymmetric encryption: For asymmetric encryption, you cannot tell the decryption
key from the encryption key and vice versa. Each user has a pair of cryptographic
keys – a public encryption key and a private decryption key. The information
encrypted by the public key can only be decrypted by the corresponding private
key and vice versa. Usually, the receiver keeps its private key. The public key is
known by the sender, so the sender sends the information encrypted by the known
public key, and then the receiver uses the private key to decrypt it.

Yealink SIP-T46G Specifications

General

Backlight	Yes
Power requirements	100-240V, DC 5V
Touchscreen	-
Display diagonal	4.3 \
Display resolution	480 x 272 pixels
Lines quantity	- lines
Phonebook capacity	1000 entries
Number of VoIP accounts	6
Voice codecs	G.711, G.722, G.723, G.726, G.729A, G.729B
Bluetooth	No
RJ-9 ports quantity	2
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Ethernet LAN (RJ-45) ports	1
Storage temperature (T-T)	-10 - 50 °C
Operating relative humidity (H-H)	10 - 95 %
Handset type	Wired handset
Product type	IP Phone
Product color	Black
Number of handles included	1 pc(s)

Weight and Dimensions

Depth	185 mm
Width	244 mm
Height	213 mm