Specification Sheet

Key Features and Benefits
HD Audio
Yealink Optima HD Voice technology combines cutting-edge hardware and software with
wideband technology for maximum acoustic performance. Being a totally open, highly
versatile audio codec, Opus, is designed to perform a higher HD audio quality than other
wideband codecs in a high network bandwidth; However, if your current network quality
is poor, Opus can provide you with a better audio quality than other narrowband codecs.
And its hearing aid compatible (HAC) handset helps the person who is with hearing loss
to hear the voice more clearly.
Easy Customization and High Expansibility
With an all-new USB port, the SIP-T41S is your ideally powerful and expandable office
phone with Bluetooth, Wi-Fi and USB recording features. It has three pages of flexible
buttons which can be programmed with up to 15 paperless DSS keys.
Efficient Installation and Provisioning
The Yealink T4S series supports efficient provisioning and effortless mass deployment
with Yealink’s Redirection and Provisioning Service (RPS) and Boot mechanism to help
you realize the Zero Touch Provisioning without any complex manual settings, which
makes the T4S series simple to deploy, easy to maintain and upgrade. Furthermore, a
unified firmware and auto-p template that applies to all T4S phone models (T41S, T42S,
T46S and T48S), saves even more time and costs for businesses, as well as simplifies the
management and maintenance.
Secure Transport and Interoperability
The SIP-T41S uses SIP over Transport Layer Security (TLS/SSL), which is the latest network
security technology. It’s also compatible with leading soft switch suppliers 3CX and
Broadsoft Broadworks.
SIP-T41S
An Affordable SIP Phone for Clear Communications
The SIP-T41S is a feature-rich business tool for superior communications and extended functionality. It offers a faster,
more-responsive interface than the T41P and several performance-enhancing functions. It’s a six-line IP phone that
comes with built-in programmable keys to enhance productivity. The SIP-T41S with Yealink Optima HD Voice
technology and wideband codec of Opus delivers superb audio quality and crystal clear voice communications. With an
all-new USB port, the SIP-T41S boasts unparalleled functionality and expansibility with Bluetooth, Wi-Fi and USB
recording features. The Yealink’s new T4S series offers the same elegant appearance of the T4 line, but with
improvements for greater interoperability and collaboration.
Optima
HD Voice
Paperless
www.yealink.com
• 2.7" 192x64-pixel graphical LCD
with backlight
• Opus* codec support
• USB 2.0
• T4S Auto-P template unified
• T4S firmware unified
• Up to 6 SIP accounts
• PoE support
• Paperless label design
• Headset, EHS support
• Integrated stand with 2 adjustable
angles
• Wall mountable
Opus Codec
Unified
Firmware
USB 2.0 HAC