A 4.3-inch color screen, 16 SIP accounts, dual USB ports for any headset or recording, and gigabit ethernet so big attachments don't choke the call. The T46U is the single most popular VoIP desk phone we ship — for good reason.
The Yealink T46U replaced the T46S in 2020 with three meaningful upgrades: a second USB port (so you can run a headset and a recording device without an adapter), support for the newer EXP43 paper-label-free expansion modules, and a faster processor that makes the menus feel instant instead of laggy after a year of firmware bloat. Everything else — the 4.3-inch color screen, the 16 SIP accounts, the dual gigabit ports, the dependable Optoma HD-Voice handset — is exactly what made the T46S the standard mid-tier business phone for the previous five years.
It's the phone we recommend to anyone who'd otherwise be tempted by a touchscreen executive model. The T48U and T57W are nice, but most of our customers find that after a week, they're using line keys and the dialpad — the touchscreen becomes a fingerprint magnet they never actually tap. The T46U gives you the same screen real estate, the same color clarity, the same 16 BLF buddy keys, for $120 less and a sturdier feel under the hand.
Where it isn't the right phone: if you need built-in Wi-Fi (look at the T54W instead — same form factor, $30 more), if you're putting it on a CEO's desk and the optics matter (the T58W is the visible-luxury choice), or if you need a phone for a hot desk where someone's going to slam the handset back into the cradle twenty times a day (the T31P is half the price and just as indestructible).
For everyone else — sales floors, customer support, branch managers, the people who actually pick up the phone all day — the T46U is the phone we've shipped more of than any other model in our catalog, and the one that comes back with warranty claims the least.
| Display & user interface | |
| Display | 4.3-inch 480×272 color TFT, adjustable brightness and contrast |
| Programmable keys | 27 paperless DSS keys spread across 4 on-screen pages (108 total) |
| Physical keys | 10 feature keys, 6 navigation keys, 12-key dialpad, hold / mute / transfer / message dedicated |
| LED indicators | Per-line LED, MWI LED on handset cradle, ringer LED ring |
| Languages | 40+ on-screen languages including English, Spanish, French, German, Portuguese, Chinese |
| VoIP & SIP | |
| SIP accounts | Up to 16 simultaneous SIP accounts |
| SIP protocols | SIP v1 (RFC 2543), SIP v2 (RFC 3261), TLS / SRTP, NAT traversal (STUN), DNS-SRV, BLF / BLA, shared call appearance |
| Codecs | Opus, G.722, G.711a/u, G.729AB, G.726, iLBC, AMR-WB (HD voice on handset, speaker, and headset) |
| DTMF | In-band, RFC 2833, SIP INFO |
| QoS | 802.1p/Q VLAN tagging, DiffServ ToS, LLDP-MED |
| Audio | |
| Speaker | Full-duplex speakerphone with AEC, Acoustic Shield noise rejection |
| HD voice | HD handset, HD speaker, HD headset |
| Headset support | RJ9 wired headset jack, USB headset, EHS via EHS36 / EHS40 adapter (sold separately) |
| Connectivity | |
| Ethernet | Dual-port 10/100/1000 Mbps gigabit ethernet (LAN + PC pass-through) |
| PoE | IEEE 802.3af, Class 3 (max 6.49 W) |
| USB | Two USB 2.0 host ports: one front, one back |
| Wi-Fi | Optional via Yealink WF50 (Wi-Fi 6) or WF40 (Wi-Fi 5) USB dongle, sold separately |
| Bluetooth | Optional via Yealink BT41 or BT42 USB dongle, sold separately |
| Power & expansion | |
| Power source | PoE (preferred) or DC 5V/2A power adapter (sold separately) |
| Power consumption | 1.6 W (idle), 3.5 W (active call, typical) |
| Expansion modules | Up to 3× EXP43 (LCD) or 3× EXP50 (color LCD) per phone — each adds 60 programmable keys |
| Physical & environmental | |
| Dimensions | 280 × 213 × 188 mm (with stand) |
| Weight | Approximately 1.21 kg |
| Wall-mountable | Yes, 75mm VESA pattern |
| Operating temperature | 0 to 40 °C (32 to 104 °F) |
| Storage temperature | −10 to 60 °C (14 to 140 °F) |
| In the box (from voip.army) | |
| Included | T46U handset, base unit, curl cord, ethernet cable, stand, quick-start card, voip.army provisioning card with extension & SIP credentials pre-loaded |
| Not included (sold separately) | Power adapter (PoE preferred), Wi-Fi or Bluetooth dongle, EHS adapter for wireless headsets, expansion modules |
Every T46U we ship arrives pre-configured for your extension. If you're bringing your own, we onboard it in the same auto-provisioning flow as our shipped units. Either way, the user experience is "plug it in, wait a minute, take a call."
The phone boots, asks our provisioning server for its per-MAC config file, downloads SIP credentials and line key layout, reboots, registers. Typically about a minute on a decent internet connection.
The T46U supports up to 16 simultaneous registrations. Useful for shared inboxes, after-hours desks, or running a sales line and a personal line on the same handset.
27 DSS keys × 4 pages, all reconfigurable from the voip.army portal. BLF, paging, park, transfer, custom URL — every key is yours.
If you're bringing your own T46U, we don't charge to add it. Send the MAC, factory-reset, plug in, done.
Stack up to three expansion modules off a single T46U for 288 total programmable keys — receptionist-friendly for a 50+ person office.
Front USB for your Jabra or Plantronics. Back USB for a recording dongle, Wi-Fi adapter, or Bluetooth adapter. You don't have to choose.
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.