# Gerdes PrimuX SIP 2 ISDN access device Wired — supports X.25, X.75, HDLC, V.110, ISO 8208, LAPD

**URL:** https://aio.lv/en/product--gerdes-2801--1855171
**Data updated:** 2026-04-14 14:15 (EEST)
**Category:** VoIP Gateways
**Manufacturer:** Gerdes
**Manufacturer code:** 2801
**EAN:** 4032783280108
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 134.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 111.56 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--gerdes-2801--1855171

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Gerdes PrimuX SIP 2 is a wired ISDN access device and VoIP gateway designed for interfacing legacy data links and ISDN networks. It supports X.25, X.75, transparent modes, HDLC transparent, V.110, T.70 NL, T.90 NL, ISO 8208 and LAPD protocols, enabling integration of older packet-switched services with SIP-based infrastructures for telephony and data transmission.

## Long description

Gerdes PrimuX SIP 2 is a wired ISDN access device and VoIP gateway designed to bridge legacy packet-switched and ISDN data links with modern SIP-based networks. The device supports a wide range of protocols — X.25, X.75, transparent modes, HDLC transparent, V.110, T.70 NL, T.90 NL, ISO 8208 and LAPD — enabling migration and interoperability for telephony and data transmission across ISDN and IP infrastructures.
Advantages
The Gerdes PrimuX SIP 2 provides protocol-level compatibility for legacy systems while presenting SIP connectivity for contemporary telephony and data environments. Its support for multiple encapsulation and link protocols allows seamless translation between ISDN interfaces and IP networks, reducing the need to redesign existing terminal equipment. The device's wired design focuses on stability and predictable latency for time-sensitive data and voice traffic.
Suitable for
 Integrating X.25-based packet services into SIP/VoIP environments
 Connecting ISDN LAPD signaling to SIP networks for telephony gateways
 Migrating legacy terminal equipment that uses HDLC or ISO 8208 to IP-based infrastructures
 Data transmission where V.110 or T.7x transparent modes are required
 Enterprises or service providers maintaining mixed ISDN and SIP deployments
When it may not be suitable
The PrimuX SIP 2 is tailored for wired ISDN and legacy protocol integration; it is not intended as a general-purpose enterprise SIP PBX or as a wireless access device. It does not replace modern SIP-native endpoints where no legacy conversion is required. For deployments that require extensive codec transcoding, advanced unified communications features, or large-scale call routing and management functions, a dedicated SIP platform may be more appropriate.
Key specifications
 Supported protocols: X.25, X.75, transparent modes, HDLC transparent, V.110, T.70 NL, T.90 NL, ISO 8208, LAPD
 Interface type: wired ISDN access and IP (SIP) gateway
 Primary use: protocol conversion between legacy data links/ISDN and SIP networks
 Traffic types: packet-switched data and telephony signaling
How to use
Install the Gerdes PrimuX SIP 2 in a network rack or a stable location with wired ISDN and IP connectivity. Connect the ISDN interface to your legacy network device or line and configure the IP side with SIP credentials and network settings according to your SIP provider or PBX. Select and enable the required protocol mode (for example X.25, V.110 or LAPD) in the device configuration and map logical channels or virtual circuits to SIP endpoints or routes. Verify link parameters such as framing, baud rates for V.110, and addressing to ensure correct encapsulation and routing. Monitor logs and statistics during initial operation to confirm stable translation between ISDN/data links and SIP sessions.
What to consider before purchase
 Confirm that the specific legacy protocols you use (X.25, V.110, ISO 8208, LAPD, etc.) are required and supported
 Verify physical interface compatibility with your ISDN lines and terminal equipment
 Assess network provisioning: SIP credentials, NAT traversal, and IP routing must be configured
 Consider whether you need advanced SIP features (transcoding, call routing) not provided by a protocol-conversion gateway
Usage recommendations
For reliable operation, place the device in a controlled environment with stable power and wired network connections. Before full migration, test individual protocol mappings and a subset of calls or data sessions to validate encapsulation settings and timing parameters. Keep firmware up to date and document configuration mappings between legacy logical channels and SIP endpoints to streamline troubleshooting and future maintenance.

## Specifications

| Feature | Value |
|---|---|
| Internal | No |
| Data link protocols | X.25, X.75, transparent, HDLC transparent, V.110, T.70 NL, T.90 NL, ISO 8208, LAPD |
| CAPI support | 1.1/2.0 |
| Connector(s) | USB |
| Connectivity technology | Wired |
| Compatible operating systems | Windows XP, Vista, Server 2003, 2008 (R2), Windows 7, Windows 8, Linux |

## FAQ

### How much does the Gerdes PrimuX SIP 2 ISDN access device Wired cost, and is it available for purchase?

The price is 134.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 14.07.2026 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 Gerdes 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 Gerdes 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/1855171/54817487_large.webp