# IP Phone Yealink SIP-T43U Grey 12 lines LCD Wi-Fi

**URL:** https://aio.lv/en/product--yealink-sip-t43u--3520340
**Data updated:** 2025-12-12 09:07 (EET)
**Category:** VoIP Phones
**Manufacturer:** Yealink
**Manufacturer code:** SIP-T43U
**EAN:** 6938818304284
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 128.49 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 106.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--yealink-sip-t43u--3520340

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.07.2026 | free |
| Pickup points | 03.08.2026 | 1.89 EUR |
| Courier delivery to door | 03.08.2026 | 4.99 EUR |

## Summary description

The Yealink SIP-T43U is a versatile IP phone featuring a 9.4 cm LCD display with a resolution of 360 x 160 pixels. It supports 12 lines and has a phonebook capacity of 1000 entries. With wired handset and multiple voice codecs including G.711 and OPUS, it ensures high-quality communication. The phone also supports Wi-Fi connectivity, making it ideal for modern office environments.

## Long description

The Yealink SIP-T43U is a 12-line business IP phone with a 3.7-inch black-and-white display and support for the EXP43 expansion module. Equipped with Yealink Optima HD Voice and the Opus wideband codec, the T43U delivers clear voice communications and improved audio performance. The phone includes dual USB ports enabling Bluetooth, Wi‑Fi, USB headset and USB recording functions, and supports up to three expansion modules for additional programmable keys. The T4U series keeps the T4 line’s elegant design while enhancing interoperability and collaboration features.
Advantages
The device provides high-quality audio through HD voice technology and Opus codec, plus a hearing-aid-compatible handset. Dual USB ports allow flexible use of Bluetooth, Wi‑Fi, headsets and call recording without extra adapters. Programmable paperless DSS keys across three pages and support for up to three expansion modules increase functionality and scalability. Unified firmware and provisioning tools simplify mass deployment and maintenance.
Key specifications
 Lines: 12-line IP phone
 Display: 3.7" black-and-white screen
 Audio: Yealink Optima HD Voice; Opus wideband codec; HAC handset
 Ports: Dual USB ports (support Bluetooth, Wi‑Fi, USB headset, USB recording)
 Expansion: Supports EXP43 and up to three expansion modules (up to 180 extra keys)
 Provisioning: Yealink RPS and Zero Touch Provisioning; unified firmware and auto-provision templates
 Security & Interoperability: SIP over TLS/SSL; compatible with 3CX and BroadWorks; dual firmware images
How to use
Connect the SIP-T43U to your IP network and power it via PoE or the appropriate adapter. Use the phone’s web interface or provisioning service (RPS) to configure SIP account settings and apply the unified template if available. Plug USB accessories into the dual USB ports to enable Bluetooth, Wi‑Fi, USB headsets or recording features. Program the paperless DSS keys through the menu or web GUI and attach expansion modules if more programmable keys are required.
Recommendations
For best audio quality enable the Opus codec when supported by your SIP provider. Use Yealink’s RPS or auto-provisioning templates for large deployments to reduce manual configuration time. Keep firmware updated and retain the dual firmware images to avoid interruptions during upgrades.

## Specifications

### Display

| Feature | Value |
|---|---|
| Display | LCD |
| Touchscreen | No |
| Display diagonal | 3.7 " |
| Display resolution | 360 x 160 |
| Backlight display | Yes |

### Phone features

| Feature | Value |
|---|---|
| Full duplex | Yes |
| Conference call | Yes |
| Phonebook capacity | 1000 entries |
| Caller ID | Yes |
| Call forwarding | Yes |
| Redialing | Yes |
| Answering machine | Yes |
| Call waiting | Yes |
| Speed dialling | Yes |
| Call hold | Yes |
| Lines quantity | 12 lines |
| Anonymous call | Yes |
| Anonymous call rejection | Yes |
| Call transfer | Yes |
| Call history | Yes |
| Number of VoIP accounts | 12 |
| Call return | Yes |
| SIP registrar server | Yes |

### Audio

| Feature | Value |
|---|---|
| Speakerphone | Yes |
| Voice codecs | PLC, AGC, iLBC, AJB, VAD, OPUS, G.729ab, G.726, G.723.1, G.711a, G.711Mu, AMR-WB, AMR-NB |
| Microphone mute | Yes |
| Comfort noise generation (CNG) | Yes |
| Packet loss concealment (PLC) | Yes |

### Ports & interfaces

| Feature | Value |
|---|---|
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 2 |
| DC-in jack | Yes |
| RJ-9 ports quantity | 2 |
| Expansion module support | Yes |

### Network

| Feature | Value |
|---|---|
| Supported network protocols | FTP/TFTP/HTTP/HTTPS, IPv6, LLDP/CDP/DHCP VLAN |
| Bluetooth version | 4.1 |
| Ethernet LAN | Yes |
| Networking standards | IEEE 802.1x, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3af |
| Bluetooth | Yes |
| Wi-Fi | Yes |
| Quality of Service (QoS) support | Yes |
| DHCP client | Yes |
| Ethernet LAN data rates | 10, 100, 1000 |
| Syslog | Yes |
| Ethernet LAN interface type | Gigabit Ethernet |

### Power

| Feature | Value |
|---|---|
| Power consumption (typical) | 2.2 W |
| AC adapter input voltage | 100 - 240 |
| AC adapter output voltage | 5 |
| AC adapter output current | 1.2 A |
| Power over Ethernet (PoE) | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 174.9 mm |
| Width | 224.9 mm |
| Depth | 206.2 mm |
| Package depth | 223 mm |
| Package height | 120 mm |
| Package width | 246 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 10 - 95 |
| Operating temperature (T-T) | -10 - 50 |

### Certificates

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |
| Compliance certificates | REACH, RoHS |

### Packaging content

| Feature | Value |
|---|---|
| Quick start guide | Yes |
| Ethernet cable | Yes |
| Handset | Yes |
| Mounting kit | Yes |
| Number of handles included | 1 pc(s) |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 85171800 |

### Design

| Feature | Value |
|---|---|
| Wall mountable | Yes |
| Product colour | Grey |
| Mounting | Desk/Wall |
| Handset type | Wired handset |
| Product type | IP Phone |

### Management features

| Feature | Value |
|---|---|
| Plug and Play | Yes |

### Performance

| Feature | Value |
|---|---|
| Dual-Tone Multi-Frequency (DTMF) modes | In-band, Out-of band, SIP info |

## FAQ

### How much does the IP Phone Yealink SIP-T43U cost, and is it available for purchase?

The price is 128.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 59 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can IP Phone Yealink SIP-T43U be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Yealink products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Yealink service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: display, touchscreen, lines quantity, speakerphone, ethernet lan, bluetooth, power over ethernet (poe), handset type, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for IP Phone Yealink SIP-T43U?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3520340/65784898_large.webp