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Yealink · T4 series · 7-inch touchscreen

Yealink T48SSeven-inch capacitive touchscreen and a USB port.

Sixteen SIP accounts, a 7-inch 800×480 capacitive touchscreen, dual gigabit ethernet with PoE, single USB port, EHS support, Opus codec. The T48S is the touchscreen version of the T48G — the executive desk phone that introduced touch navigation to the Yealink T4 line.

Display
7″ color · 800×480 · capacitive touch
SIP accounts
16 lines
Programmable keys
29 line + multi-page
Ethernet
Dual gigabit · PoE class 3
Audio
HD voice · USB · EHS · Opus
Power
PoE or 5V/2A adapter
$269 one-time
or rent for $17.99/mo — month-to-month, return anytime
Ships pre-configured · free next-business-day for orders $200+
✓ Auto-provisioned out of the box ✓ Warranty replacement included with rental ✓ Free shipping on orders $200+
Yealink T48S voip desk phone — front view with handset and display
Yealink T48S

Why the T48S is on the catalog.

The T48S took the T48G chassis and added a capacitive touchscreen plus the standard mid-2010s Yealink refresh (USB port, Opus codec). For $30 over the T48G, you get a phone that lets executives tap to navigate menus, swipe between BLF pages, and use the directory like a small touchscreen device. For most users in the executive tier, this is the version you want.

Where touch actually helps: BLF page swiping with sixteen SIP lines and dozens of monitored extensions, browsing a 500-contact directory, switching between recent calls. Yealink's UI is built for touch on this model — buttons are sized appropriately, swipe gestures work as expected. It feels like a real touchscreen device, not a non-touch screen retrofitted.

Where the T48U beats it: dual USB instead of single (so a Wi-Fi dongle does not block headset port), modern EXP43 sidecar support, faster processor, longer firmware horizon. $20 more. For brand-new deployments the T48U is the right pick. The T48S stays in the catalog for the install base.

Full technical specifications.

Display & user interface
Display7-inch 800×480 capacitive touch color TFT LCD
TouchMulti-touch capacitive
Line keys29 multi-page line keys with dual-color LEDs
Soft keys4 context-sensitive soft keys
VoIP & SIP
SIP accountsUp to 16 SIP accounts
ProtocolsSIP v2, TLS, SRTP, BLF/BLA
CodecsOpus, G.722, G.711, G.723.1, G.729AB, G.726, iLBC
ProvisioningFTP/TFTP/HTTP/HTTPS, PnP, TR-069, RPS
Audio
HD voiceHD handset and HD speakerphone
SpeakerFull-duplex with AEC
HeadsetRJ9 + USB + EHS
Connectivity
EthernetDual 10/100/1000 Mbps gigabit
PoEIEEE 802.3af Class 3
USB1 × USB 2.0
ExpansionEXP40 sidecar (legacy)
Power & physical
PowerPoE or 5V/2A adapter
DimensionsApproximately 266 × 211 × 41 mm
Wall mountYes
In the box
IncludedT48S handset, base, curl cord, ethernet cable, stand, provisioning card
Not includedPower adapter, USB headset, sidecar

How it works on voip.army.

Plug the T48S into PoE and ethernet. About a minute later it has registered to your extension. Same auto-provisioning flow as every other supported phone — no SIP credentials to type, no firmware to chase.

60s

Time from plug-in to first call

Boot, fetch config from our provisioning server, register, ready. About one minute on a normal connection.

16

SIP accounts on one phone

16 lines per phone. Each line key has a dual-color LED for status at a glance.

29

Programmable keys

29 line + multi-page mapped from the voip.army portal — BLF, paging, parking, transfer destinations.

0

Per-device onboarding fees

Bringing your own? Send us the MAC, factory-reset, plug in. No charge to add it to the fleet.

802.3af

PoE class

Standard PoE — any 802.3af-compliant switch from the last 15 years powers the phone without an adapter.

Yealink

Auto-provisioning template

Tested against every Yealink firmware release for T48S. We catch regressions before they reach your fleet.

Need T48Ss for every desk?

Tell us how many you need and what extensions to map. We ship pre-configured next business day; you plug them in and they work.

✓ Free shipping on orders $200+ ✓ 30-day hardware return ✓ Pre-configured before shipping