Six SIP accounts, a 2.7-inch 192×64 backlit monochrome screen, dual gigabit ethernet with PoE, single USB port for wired or wireless headsets, EHS support. The T41S is the T41P refresh with gigabit and USB — and a solid mid-tier choice for any desk that handles real call volume.
The T41S is the practical working-desk phone of the T4 mid tier. Six SIP lines covers any realistic small-business need. The 27 multi-page programmable keys give you serious BLF capacity. The USB port means you can plug in a wired Yealink, Jabra, or Plantronics headset and have clean two-channel audio. EHS support means a wireless headset answers calls from its own controls. For an agent who spends six hours a day on the phone, this matters.
Where it lands against the T41P: $20 more for gigabit ethernet, USB headset, Opus codec, and a longer firmware track. There is no scenario where the T41P is the better buy for a new desk — the T41S wins on every meaningful spec.
Where it lands against the T41U: $20 less than the T41U, which adds a second USB port. If you need to run both a wired USB headset and a Wi-Fi / Bluetooth dongle simultaneously, the T41U is required. For most agents who pick one or the other, the T41S is enough.
Where it lands against the T46G: $10 less, but you give up the 4.3-inch color screen and ten extra SIP lines. For a phone that lives on a desk all day, the screen upgrade alone is usually worth $10. The T41S is the right pick for monochrome-tolerant agents who care more about the USB headset port than the screen.
| Display & user interface | |
| Display | 2.7-inch 192×64 backlit graphical LCD |
| Line keys | 6 line keys with dual-color LEDs |
| Programmable keys | 27 line keys across multiple pages (with multi-page support) |
| Soft keys | 4 context-sensitive soft keys |
| Navigation | 5-way nav, dedicated function keys |
| VoIP & SIP | |
| SIP accounts | Up to 6 SIP accounts |
| Protocols | SIP v2 (RFC 3261), TLS, SRTP, BLF/BLA, shared call appearance |
| Codecs | Opus, G.722, G.711(A/μ), G.723.1, G.729AB, G.726, iLBC |
| Provisioning | FTP/TFTP/HTTP/HTTPS, PnP, TR-069, RPS |
| Security | HTTPS, TLS, SRTP, 802.1X |
| Audio | |
| HD voice | HD handset and HD speakerphone |
| Speaker | Full-duplex with AEC |
| Headset | RJ9 + USB + EHS for wireless |
| Connectivity | |
| Ethernet | Dual 10/100/1000 Mbps gigabit |
| PoE | IEEE 802.3af Class 1 |
| USB | 1 × USB 2.0 |
| Expansion | EXP40 sidecar supported |
| Power & physical | |
| Power | PoE or 5V/1.2A adapter |
| Dimensions | Approximately 220 × 200 × 41 mm |
| Wall mount | Yes |
| In the box | |
| Included | T41S handset, base, curl cord, ethernet cable, stand, provisioning card |
| Not included | Power adapter, USB headset, EHS adapter, sidecar |
Plug the T41S 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.
Boot, fetch config from our provisioning server, register, ready. About one minute on a normal connection.
6 lines per phone. Each line key has a dual-color LED for status at a glance.
6 line + 27 multi-page mapped from the voip.army portal — BLF, paging, parking, transfer destinations.
Bringing your own? Send us the MAC, factory-reset, plug in. No charge to add it to the fleet.
Standard PoE — any 802.3af-compliant switch from the last 15 years powers the phone without an adapter.
Tested against every Yealink firmware release for T41S. We catch regressions before they reach your fleet.
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.