If this is the first phone in your network, make it a router phone. If you have others choose whether to make this a router phone or specify the router / SBC for this phone. For T53W they were aiming for a lower more basic/common use phone that would fit the same form factor/look consistent with the rest of the T5X series. So just like the T41 that's now at the bottom end of the T4X series, you get the original version (T53W) and the "stripped down bare bones" version T53. The Yealink T57W is specifically designed for executives and busy managers with a heavy call load. Integrated modern technology The Yealink SIP-T57W IP Phone features a 7-inch capacitive touch screen that you can easily adjust to a more comfortable viewing angle. In addition, the clearly defined set of menus is easy to navigate through when all you have to do is touch the desired option, providing you with an optimised interface for a smartphone-like user experience. HD audio

The Yealink business phone supports up to four cordless handsets via a DECT dongle. You can now switch calls between the desktop phone and the cordless DECT handset in no time. Yealink knows how important it is for users to have a clean and neat workspace. With the wireless headset's connection to Bluetooth and Wi-Fi, your space will remain uncluttered. With integrated Bluetooth 4.2 and 5G WiFi, the SIP T57W IP phone is guaranteed to keep up to date with modern wireless technology. An integrated USB 2.0 port allows recording, and connection of a wired or wireless headset, to ensure you remain comfortable whilst taking your calls. This IP phone offers optimal efficiency and productivity. HD display When the time came to give the T4XGs an internal upgrade to get faster processors/more modern hardware etc, Apply had just pulled their famous "iPhone S!" marketing scheme and I suspect Yealink switched from T4XG to T4XS as a blatant copy of the strategy. (i.e. it's the same phone but faster inside, so let's add an S to say "Super!").Yealink T5 business phones are equipped with an adjustable high resolution display and LED indicators, Android 9.0 OS to improve the data encryption, authority management and more. It includes built-in Bluetooth and Wi-Fi. Each phone can be connected to 4 cordless handsets with the capability of switching calls between the desktop phone and the cordless DECT handset. C:\ProgramData\3CX\Instance1\Data\Http\Interface\provisioning\\firmware\C:\ProgramData\3CX\Instance1\Data\Http\Interface\provisioning\\firmware_new\

Upgrade its firmware to the latest 3CX supported version. See how to do this here . Note: If you are planning to install a router phone, read the section below regarding the firmware requirements. The Yealink T57W WiFi VoIP/SIP Phone is an easy-to-use Prime Business Phone with an adjustable 7-inch multi-point touch screen. Not only can you easily and flexibly adjust the screen to find the comfortable viewing angle according to personal and environmental needs, but you can also get rich visuals and easy navigation with just one-touch. With the built-in Bluetooth 4.2 and dual band 2.4G/5G WiFi, the SIP-T57W IP Phone ensures that you'll keep up with modern wireless technology and the future wireless age. The built-in USB 2.0 port allows for USB recording or a direct wired/wireless USB headset and up to three Yealink EXP50 expansion modules (sold separately - see accessories). The Yealink SIP-T57W is a powerful and expandable office phone that delivers optimum desktop efficiency and productivity. Key Features Note: If you don't want to use RPS, you have to enter the provisioning URL into the phone via its web interface. The phone will be configured automatically and then restart. Use the DHCP option 66 if you have a large number of identical legacy phones (as the URL is different for each phone).The T3x were a stop gap measure as they still had the same form factors as the T2x. To keep up with the times, Yealink introduced the more "modern" T4X designs. Since they also originally had 10/100 and Gigabit variants, those models became T4XP or T4XG depending on the switch built into them. In reality the P variant really only hit low end units, and before long the G version was the defacto. A built-in USB 2.0 port allows you to enjoy USB call recording via USB flash drive. Via this USB port, you also can connect wired/wireless USB headset without connecting Yealink EHS36 anymore, and connect up to 3 Yealink expansion modules EXP50 which can be programmed with up to 180 paperless DSS keys.

The Yealink SIP-T57W 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.With the adjustable high-resolution display available on the T57W phone, you can switch angles to your liking and under a variety of lighting conditions. This will ensure an optimized user experience. Enjoy clear calls