Yealink SIP-T42S Review

Hailing from Yealink’s T4S series, the T42S is one rock-solid 12-line IP phone. This phone embodies all that the company is about.

There are good reasons why Yealink leads the SIP-phone market. For one, it is striking how user-friendly their phones are. A company that designs its products based on ‘real-world necessities’ always deserves its props.

And the T42S simply knows its role too. It is easy to use, its performance is flawless and it is compatible with other office devices.

But despite knowing its role, where would this role fit? There is no such thing as ‘universal phone’. Different phones fit different needs. So, where does the T42S belong to?

We will guide you in finding that out. Towards the end, you should have a good idea of whether this phone will be a good fit for your office or not.

Yealink SIP-T42S IP Phone, 12 Lines. 2.7-Inch Graphical Display. Dual-Port Gigabit Ethernet, 802.3af PoE, Power Adapter Not Included
  • 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.
  • Choice of power options - Can be powered via Power over Ethernet (PoE). Can also be powered by OPTIONAL universal power supply. Power supply is only needed if PoE is not available on your network.

Originally released in 2017, the T42S is the improved version of the older T42G. Just like how the entire T4S series updates on the preceding T4 series. The phones from both series look identical, but the T4S devices come with all kinds of enhancements.

Except for the better overall performance, the T4S series also comes with unified firmware. This is like having multiple smartphones, all running with the same Android OS.

This really makes management and provisioning easier.

There are other improvements to the T4S series. However, these will also become evident in the process of reviewing the T42S specifically.

Appearance

The T42S exhibits pure business elegance. The matte surface, the metallic buttons, the heavy headset. All these small but nice touches.

The phone is quite compact. The 2.7-inch LCD display proves sufficient for displaying all the information. However, it can be a bit painful to the eyes at first.

Especially since most people are already adjusted to vivid desktops and smartphone screens.

Sound Performance

The T42S delivers excellent sound quality! We can attribute that to the Yealink’s Optima HD audio system and the Opus codec.

This combination of software and hardware makes for one crisp and clear communication experience. Even when the network connection is not that great the phone behaves well.

In addition, all the T4S models are supplied with HAC (Hearing Aid Compatible) handsets. The HAC system aids people with hearing loss to hear the other side more clearly. We have not tested that feature but we assume that it will be helpful to some.

Set-Up and Configuration

The process of setting up and configuring a single device is simple and easy. It is done through Yealink’s browser configuration page and takes minutes.

As about this unified hardware…All of the phones across Yealink’s range have the same interfaces and firmware. This makes it really easy to navigate your way when setting a bulk of devices up.

Connectivity

The T42S comes with two Gigabit Ethernet ports. The first one can be used for connecting it to a PC. The second one is generally used for powering the device via PoE.

Powering VoIP devices via PoE is now the standard. However, the T42S can also be powered via a standard 5-volt AC adaptor. Just keep in mind that most retailers do not include it so it must be purchased separately.

In addition, the T42S also has a headset port and EXT port for attaching expansion modules.

(If attaching expansion modules, you will most certainly need an extra AC power adaptor.)

A single USB 2.0 port can also be found. It can be utilized for connecting devices such as a Bluetooth headset or a WiFi dongle. Alternatively, a recording device can also be plugged in there.

Again, keep in mind that such accessories are purchased separately.

The T42S has an integrated back stand with 2 adjustable angles and is wall-mountable.

T42S backside ports

User Experience

The T42S comes with 6 programmable keys – 3 on each side. These can be used for achieving optimal workflow.

Most commonly, these so-called DSS keys are used for speed dialing. However, they can also be programmed to perform other functions.

There are also four soft keys at the bottom of the display. They are contextual buttons. This means that their labels will change and be relevant to whatever you’re doing at the time.

For example, if on a call, these buttons will display the essential call-handling tasks. The options for holding or transferring a call will be a click away.

Also, there’s an option to take a call while being in a call. By clicking the ‘answer’ soft key while the second call is incoming, the T42 will automatically put the first one on hold.

Similarly, starting a conference call while already in a call is a one-click task as well

The volume button at the bottom is also adaptable. When pressed during a call, the button adjusts the call volume. If pressed outside a call, it would adjust the ring volume.

These contextual keys are much taken for granted at this point but are still of incredible utility.

The exact same goes for the status bar at the top. A simple feature that will help users stay on top of things.

Legitimate PoS

Overall, it is safe to say the T42S has all the call features expected from a business phone. The beauty of this – and all Yealink models – is in retaining the simplicity in doing so.

Regardless of previous experience, professionals should immediately get into this phone’s flow. It is just that user-friendly and intuitive.

Keep in Mind

The T42S is easy to use, but there are better alternatives for bigger offices.

The T42S comes with a total of 6 programmable keys. Six keys should do just fine in smaller offices. But as the office increases, so does the need for impeccable workflow. And users might simply need more DSS keys to achieve that.

So, why put oneself in a corner? Better consider IP phones with at least 10 DSS keys for bigger offices. More programmable keys enable your office to make use of more PBX features. Which in turn creates one smoother collaboration experience.

Surely, it will be a bit more costly. But your teams will be pleased in the long-term.

In conclusion

The T42S is another example of Yealink’s product consistency. On the one hand, because all their devices support identical features and interfaces.

On the other, because all of their phones feel solid and reliable.

With this particular model, Yealink have managed to pack their signature features into one smaller and cheaper device.

The balance of price point and feature set make it a great entry-level IP phone.

The only shortcoming is in the shortage of DSS keys. But this is from the perspective of bigger offices.

From the perspective of smaller offices, this is only better. Here’s a nice compact phone, packed with everything the average business user might ever need.