# VoIP Gateway Yeastar TB400 4x BRI ports, SIP, G.711/G.722/G.726/G.729A, 10/100 Mbps, TLS/SRTP

**URL:** https://aio.lv/en/product--yeastar-10001115--10463463
**Data updated:** 2026-05-01 23:25 (EEST)
**Category:** VoIP Gateways
**Manufacturer:** Yeastar
**Manufacturer code:** 10001115
**EAN:** 6926150036611
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 490.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 405.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--yeastar-10001115--10463463

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Yeastar TB400 is a VoIP gateway with four BRI ports designed for PBX and SIP trunk integration. It supports SIP (RFC3261), voice codecs G.711, G.722, G.726 and G.729A, and secure transport via TLS and SRTP. Network interfaces run at 10/100 Mbps and the unit accepts 100–240 V input with 12 V/2 A output. Suitable for small office telephony, PSTN migration and hybrid SIP deployments.

## Long description

Yeastar TB400 is a compact VoIP gateway with four BRI ports designed to connect ISDN BRI lines to SIP-based phone systems and SIP trunks. The device supports SIP (RFC3261) signalling and a range of voice codecs including G.711, G.722, G.726 and G.729A, and provides secure transport options via TLS and SRTP. Network connectivity is via a 10/100 Mbps Ethernet interface, and the unit accepts 100–240 V input with a 12 V/2 A output. The TB400 is intended for small office telephony, PSTN migration projects and hybrid SIP deployments where reliable ISDN-to-IP conversion is required.
Advantages
The Yeastar TB400 delivers flexible ISDN BRI to SIP conversion with support for both media and signaling security, enabling integration into modern IP PBX environments while preserving legacy ISDN service. It supports multiple industry-standard codecs to balance bandwidth usage and voice quality, and its 10/100 Mbps Ethernet and standards-based networking ensure straightforward connectivity in existing networks. The unit’s compact dimensions make it suitable for rack or shelf placement in small equipment rooms.
Suitable for
 Small and medium offices migrating from ISDN BRI to SIP trunking
 Integrating legacy ISDN BRI telephony with IP PBX systems
 Hybrid deployments where both PSTN and SIP connectivity are required
 Sites that require secure signalling and media transport (TLS/SRTP)
When it may not be suitable
The TB400 is specifically designed for use with ISDN BRI lines and SIP systems; it is not suitable for environments that require a large number of concurrent PSTN channels beyond the capacity provided by four BRI ports. It also does not provide gigabit Ethernet, so networks that require 1 Gbps LAN connectivity or higher throughput for additional services may need a different gateway.
Key specifications
 Interface: 4x BRI ports for ISDN BRI connectivity
 VoIP protocol: SIP (RFC3261)
 Supported codecs: G.711, G.722, G.726, G.729A
 Security: TLS for signalling, SRTP for media
 Network: Ethernet 10/100 Mbps, compatible with IEEE 802.3 and IEEE 802.3u
 Signalling and tones: DTMF support
 Power: Input 100–240 V AC, output 12 V DC / 2 A
 Dimensions: Width 213 mm, Depth 160 mm, Height 44 mm
How to use
Install the TB400 in a location with reliable network and power access and connect the ISDN BRI lines to the BRI ports. Connect the Ethernet port to your LAN and configure network settings via the device’s web GUI. Configure SIP trunk or IP PBX settings in accordance with your SIP provider or PBX documentation, select appropriate codecs for your deployment, and enable TLS/SRTP where required for secure transport. Use the GUI to set TE/NT mode and any necessary channel mapping to ensure correct call routing between ISDN and SIP endpoints.
What to consider before purchase
 Number of ISDN BRI channels required—TB400 provides four BRI ports
 Compatibility with your IP PBX or SIP trunk provider and required codecs
 Need for secure signalling/media (TLS and SRTP support)
 Network speed requirements—device supports 10/100 Mbps Ethernet only
 Power availability and space for a compact 213 x 160 x 44 mm unit
Usage recommendations
For reliable operation, keep firmware updated, enable TLS and SRTP when transporting calls over untrusted networks, select appropriate codecs (for example G.722 for higher audio quality where bandwidth allows), and verify TE/NT configuration during initial setup to ensure proper ISDN signalling behavior.

## Specifications

| Feature | Value |
|---|---|
| Supported network protocols | UDP, TCP, TLS, SRTP |
| Height | 44 mm |
| Input voltage | 100 - 240 |
| Output voltage | 12 |
| LED indicators | Y |
| Modulation | DTMF |
| Firewall security | Yes |
| Width | 213 mm |
| Depth | 160 mm |
| Networking standards | IEEE 802.3u, IEEE 802.3 |
| Voice codecs | G.726, G.729A, G.722, G.711 |
| VoIP protocols | SIP (RFC3261) |
| Wi-Fi | No |
| Output current | 2 A |
| Web-based management | Yes |
| Ethernet LAN data rates | 100, 10 |
| Dynamic DNS (DDNS) | Yes |
| Static route | Yes |

## FAQ

### How much does the Yeastar TB400 VoIP Gateway 4x BRI cost, and is it available for purchase?

The price is 490.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 01.07.2026 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 Yeastar TB400 VoIP Gateway 4x BRI 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 Yeastar 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 Yeastar 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

### Where can I download the instructions for Yeastar TB400 VoIP Gateway 4x BRI?

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/10463463/68699470_large.webp