Specifications
Manufacturer: Yealink Network Technology Co., Ltd
Manufacturer Part Number: SIP-T42S
Manufacturer Website Address: http://www.yealink.com
Brand Name: Yealink
Product Series: T4
Product Model: SIP-T42S
Product Name: Ultra-elegant Gigabit IP Phone
Marketing Information: The SIP-T42S IP phone is a dynamic business communications tool for superior voice communications and extended functionality. It has a faster, more responsive interface than the T42G and offers better overall performance. The SIP-T42S is a 12-line IP phone with multiple programmable keys for enhancing productivity. It is with Yealink Optima HD Voice Technology and wideband codec of Opus for superb sound quality and crystal clear communications.What’s more, the SIP-T42S is built with Gigabit Ethernet technology for rapid call handling. Plus, with an all-new USB port, the SIP-T42S boasts unparalleled functionality and expansibility with Bluetooth, Wi-Fi and USB recording features. The new T4S series offers the same elegant appearance of the T4 line, but with improvements for greater interoperability and collaboration.
Product Type: IP Phone
Technical Information
IP Phone Technology: VoIP
Handset Connectivity Technology: Corded/Cordless
Base Unit Connectivity Technology: Corded/Cordless
Wireless Technology:

• Bluetooth
• Wi-Fi

Total Number of Phone Lines: 12
Caller ID: Yes
Speakerphone: Yes
Interfaces/Ports
Network (RJ-45): Yes
Number of Network (RJ-45) Ports: 2
USB: Yes
PoE (RJ-45) Port: Yes
Management & Protocols
Communication Protocols:

• SIP
• SIP v2
• NAT
• STUN
• DHCP
• SNTP
• UDP
• TCP
• SRTP
• TLS
• LLDP
• CDP
• ICE
• RTCP
• RTCP XR

Physical Characteristics
Colour: Black
Form Factor:

• Wall Mountable
• Desktop

Height: 175 mm
Width: 212 mm
Depth: 189 mm
Miscellaneous
Package Contents:

• Ultra-elegant Gigabit IP Phone
• Handset cord
• Ethernet Cable (2m CAT5E UTP Cable)
• Stand
• Quick Start Guide

Environmentally Friendly: Yes
Environmental Certification:

• RoHS
• REACH
• TV Rheinland