# Teldat Module 4S/U+4U internal/external digital S0 ports — 4 switchable S0 (Up0/4UP0)

**URL:** https://aio.lv/en/product--teldat-5510000189--1591408
**Data updated:** 2026-02-12 09:43 (EET)
**Category:** Server Parts & Components
**Manufacturer:** Teldat
**Manufacturer code:** 5510000189
**EAN:** 4044763005274
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 113.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 94.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--teldat-5510000189--1591408

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.07.2026 | free |
| Pickup points | 27.07.2026 | 1.99 EUR |
| Courier delivery to door | 27.07.2026 | 4.99 EUR |

## Summary description

This Teldat Module 4S/U+4U provides four switchable digital S0 ports for internal or external use (Up0/4UP0). Designed for integration into compatible Teldat systems, it supplies digital ISDN S0 interfaces with switchable configuration to connect multiple ISDN devices or telephony equipment. Suitable for telecommunications expansion, replacements, or system upgrades where compact modular S0 connectivity is required.

## Long description

The Teldat Module 4S/U+4U internal/external digital S0 ports — 4 switchable S0 (Up0/4UP0) is a compact modular interface designed to add ISDN S0 connectivity to compatible Teldat systems. It provides four digital S0 ports that can be configured for internal or external use, enabling flexible connection of ISDN terminals, telephony equipment, or legacy devices. The module is intended for installation in systems that support Teldat expansion modules and is suitable for situations where additional S0 interfaces are needed without extensive hardware replacement.
Advantages
The module offers configurable S0 ports that switch between internal and external modes to match different deployment scenarios. Its compact design allows seamless integration into existing Teldat chassis or compatible enclosures, minimizing space usage. The use of standardized digital S0 interfaces ensures interoperability with common ISDN equipment and telephony devices. The module supports easy replacement or expansion of S0 connectivity while preserving existing system architecture.
Suitable for
 Expanding ISDN S0 interfaces in compatible Teldat systems
 Replacing or upgrading legacy telephony ports
 Connecting multiple ISDN terminals or PBX equipment
 Laboratory or field testing of ISDN devices within a modular system
Key specifications
 Number of S0 ports: 4 switchable digital S0 interfaces
 Port modes: configurable for internal (U to S0 internal bus) or external S0 lines
 Interface type: digital ISDN S0
 Form factor: modular card for installation in compatible Teldat chassis/enclosure
 Physical connections: ports suitable for standard S0 cabling and connectors
How to use
Install the module into a compatible Teldat system slot following the system's hardware installation procedures. Configure each S0 port through the host device's management interface to select internal or external mode as required for your network topology. Connect ISDN terminals, PBX trunks, or telephony devices to the appropriate S0 connectors using standard S0 cabling. Verify link and signaling status via the system management tools and perform any necessary configuration of dial plans or signaling parameters on connected equipment.
Usage recommendations
Use shielded, properly terminated S0 cabling and follow grounding guidelines to reduce interference. Before installation, confirm chassis compatibility and backup system configuration. When switching port modes, verify device signaling settings to ensure correct call setup and avoid conflicts with existing ISDN lines.

## FAQ

### How much does the Teldat Module 4S/U+4U — 4 switchable S0 ports cost, and is it available for purchase?

The price is 113.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 22.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Teldat 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 Teldat 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

## Image

https://aio.lv/img/cache/product/1591408/59840001_large.webp