# Anexum GmbH

> Anexum GmbH manages carrier-independent fixed-line and mobile connectivity for distributed businesses. The service combines procurement, activation, hardware, monitoring, carrier coordination, one contact, one invoice, and a customer portal.

## Core facts

- Legal name: Anexum GmbH
- Headquarters: Pfarrgasse 16, 7000 Eisenstadt, Austria
- Managing director: Ing. Markus Scherzer
- Company register number: FN 577098z
- VAT ID: ATU 78015407
- Languages: German and English
- Managed estate: more than 200 connections
- Commercial model: the provider audit is free and commission-based. If a switch occurs, Anexum receives a commission from the new carrier.
- Cost benchmark: projects managed by Anexum show approximately 30% lower tariff costs on average. This is an experience-based benchmark, not a guarantee.

## Primary services

- [Managed Connectivity](https://anexum.eu/services/managed-connectivity/): Pillar hub - site connectivity, business internet, 5G backup, construction-site internet, and WAN monitoring as one carrier-independent managed service.
- [Managed Dolibarr](https://anexum.eu/services/managed-dolibarr/): Pillar hub - Dolibarr ERP/CRM hosted in Germany, maintained, and extended with custom modules and the DoliConstruct construction solution.
- [Beratung & Compliance](https://anexum.eu/services/beratung-compliance/): Pillar hub - IT and telecom consulting plus the network/connectivity part of NIS-2 / NISG 2026.
- [Managed Business Internet](https://anexum.eu/services/managed-business-internet/): Carrier-independent selection and operation of fiber, DSL, coax, leased lines, SD-WAN, and LTE/5G.
- [Single Point of Contact for IT and Telecom](https://anexum.eu/services/single-point-of-contact/): Carrier-independent provider management; one contact coordinates procurement, contracts, incidents, escalation, and monitoring across all providers and sites.
- [5G Backup and Failover](https://anexum.eu/services/5g-backup-failover/): Separate primary and mobile paths, monitored signal and failover state, and scheduled failover tests.
- [Construction-Site Internet and Temporary Connectivity](https://anexum.eu/services/baustellen-internet/): Managed 5G/LTE internet for construction sites, site containers, project offices, and pop-up/event locations without a fixed line, with monitoring and optional failover.
- [Internet and WAN Monitoring](https://anexum.eu/services/internet-monitoring/): Monitoring of availability, latency, jitter, packet loss, bandwidth, signal, router health, and failover state using Prometheus and Grafana.
- [Managed Dolibarr Hosting](https://anexum.eu/services/dolibarr-hosting/): Dolibarr hosting on infrastructure in Germany with daily backups, migration, updates, module support, customization, and training.
- [Dolibarr Custom Module Development](https://anexum.eu/services/dolibarr-custom-module-development/): Custom Dolibarr modules, hooks, triggers, scheduled jobs, documents, REST APIs, webhooks, migrations, tests, and version-compatible maintenance.
- [DoliConstruct: Construction ERP on Dolibarr](https://anexum.eu/services/doliconstruct-bau-erp/): Open-source construction ERP on Dolibarr with K3 calculation under ÖNORM B 2061, bill of quantities under ÖNORM A 2063, BMD payroll import/export, per-site stock, and the MobileUI barcode app.
- [NIS-2 and NISG 2026 Network Security](https://anexum.eu/services/nis-2-netzwerk-security/): Network and connectivity slice of NIS-2 compliance for Austria; affected-or-not check, risk management, redundancy, monitoring with evidence, and provider/supply-chain security.
- [ISDN Migration to VoIP](https://anexum.eu/services/isdn-umstieg/): Provider-independent migration from ISDN to VoIP and SIP trunking before A1 switches ISDN off by mid-2026; inventory, number porting, gateway integration, and zero-downtime cutover.
- [Provider Audit](https://anexum.eu/provider-audit/): Review of locations, connections, SIMs, contracts, costs, carrier options, monitoring, and SLA requirements.
- [Technical Research](https://anexum.eu/research/): Architecture decision records, operating methods, recovery runbooks, and benchmark methodology.
  - [Fixed-line and 5G ADR](https://anexum.eu/research/adr-fixed-line-5g-failover/)
  - [Connectivity incident review method](https://anexum.eu/research/connectivity-incident-review-method/)
  - [Dolibarr backup and recovery runbook](https://anexum.eu/research/dolibarr-backup-recovery-runbook/)
  - [Connectivity benchmark methodology 2026](https://anexum.eu/research/connectivity-benchmark-methodology-2026/)

## English pages

- [Managed Business Internet](https://anexum.eu/en/services/managed-business-internet/)
- [Single Point of Contact for IT and Telecom](https://anexum.eu/en/services/single-point-of-contact/)
- [5G Backup and Failover](https://anexum.eu/en/services/5g-backup-failover/)
- [Construction-Site Internet and Temporary Connectivity](https://anexum.eu/en/services/baustellen-internet/)
- [Internet and WAN Monitoring](https://anexum.eu/en/services/internet-monitoring/)
- [Managed Dolibarr Hosting](https://anexum.eu/en/services/dolibarr-hosting/)
- [Dolibarr Custom Module Development](https://anexum.eu/en/services/dolibarr-custom-module-development/)
- [DoliConstruct: Construction ERP on Dolibarr](https://anexum.eu/en/services/doliconstruct-bau-erp/)
- [NIS-2 and NISG 2026 Network Security](https://anexum.eu/en/services/nis-2-netzwerk-security/)
- [ISDN Migration to VoIP](https://anexum.eu/en/services/isdn-umstieg/)
- [Provider Audit](https://anexum.eu/en/provider-audit/)
- [Technical Research](https://anexum.eu/en/research/)

## Technologies and entities

Anexum works with fixed-line and mobile connectivity, fiber, DSL, coax, leased lines, SD-WAN, LTE, 5G, SIM management, Cradlepoint, Cisco, Teltonika, Prometheus, Grafana, Dolibarr, PHP, REST APIs, webhooks, MariaDB, MySQL, Git, A1, Magenta, Drei, Deutsche Telekom, Colt, Plusnet, and other carriers selected by location and requirement.

## Contact and legal

- [About Anexum](https://anexum.eu/ueber-uns/)
- [Contact](https://anexum.eu/kontakt/)
- Email: office@anexum.at
- Telephone: +43 2682 23344
- [Legal notice](https://anexum.eu/impressum/)
- [Privacy policy](https://anexum.eu/datenschutz/)
- [Detailed machine-readable company profile](https://anexum.eu/llms-full.txt)