Yealink T44U IP Phone SIP-T44U with Power Adapter

Easy Customization and High Expansibility

Accompanied by two USB ports, the T44U is your right-hand man in the office that makes Bluetooth, Wi-Fi,

USB headset and USB recording possible, and you can use any two of them freely according to your needs

to enrich phone features. Meanwhile, the phone not only has three pages of flexible buttons that can be easily

programmed with 21 paperless DSS keys at most, but also can connect up to three expansion modules, for

up to 180 additional buttons with a screen-based LCD display and LED system.

HD Audio

Yealink Optima HD Voice technology combines cutting-edge hardware and software with wideband technology

for maximum acoustic performance. Its hearing aid compatible (HAC) handset helps the person who is with

hearing loss to hear the voice more clearly.

Efficient Installation and Provisioning

Yealink T4U 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 T4U series simple to deploy, easy to maintain and upgrade.

Furthermore, a unified firmware and auto-p template that applies to all T4U phone models, saves even more

time and costs for businesses, as well as simplifies the management and maintenance.

Secure Transport and Interoperability

Yealink T4U series uses SIP over Transport Layer Security (TLS/SSL), which is the latest network security

technology. It’s also compatible with leading soft switch suppliers, such as 3CX, Broadsoft Broadworks. It is

carried with dual firmware images that gives you a enterprise-level protection to avoid bricking your system

once upgrade failed. What's more, T4U series support the feature of Security Center, which allows users to

decide whether to connect the phone to the device management platform/service and what private data you

permit to report.