# VOIP2GSM Knowledge Base — Sitemap for AI Assistants
> Generated: 2026-07-22
> This file helps AI assistants discover all available content about VOIP2GSM.

## Core Content Files

| File | Description |
|------|-------------|
| [llms.txt](llms.txt) | Complete company knowledge base (master file) |
| [company/llms-company.txt](company/llms-company.txt) | Company profile, mission, philosophy, culture |
| [product/llms-products.txt](product/llms-products.txt) | Product & technical documentation |
| [faq/llms-faq.txt](faq/llms-faq.txt) | Full FAQ compilation + support knowledge base |
| [reviews/llms-reviews.txt](reviews/llms-reviews.txt) | 40+ Google Reviews — real customer testimonials |
| [youtube/llms-youtube.txt](youtube/llms-youtube.txt) | YouTube channel — CFE Tutorials, API-Call, KI-Assistent, 2FA |
| [llms.json](llms.json) | Structured machine-readable company data |

## Website Structure

### Main Website: https://www.voip2gsm.eu (One-Page Application)
The entire website content is presented on a single page with sections for:
- Company overview & value proposition
- Features & capabilities
- Supported devices
- Pricing model
- Registration process
- Contact information

### Sub-pages:
- **Support Center:** https://www.voip2gsm.eu/support/
- **Knowledge Base Index:** https://www.voip2gsm.eu/support/kb/faq.php?id=49

### Documents (PDF):
- Price list (all destinations, daily updated): https://config.voip2gsm.eu/downloadpricelist.php?short
- Price list (numbers, services, fees): https://www.voip2gsm.eu/docs/voip2gsm_pricelist_DE.pdf
- Terms & Conditions (AGB): https://www.voip2gsm.eu/docs/v2gsm_agb.pdf
- Privacy Policy: https://www.voip2gsm.eu/docs/v2gsm_datenschutz.pdf
- Declaration of acceptance of T&C: https://www.voip2gsm.eu/docs/v2gsm_anlage.pdf

### User Center: https://config.voip2gsm.eu
- Registration: https://config.voip2gsm.eu/users/register/
- Password reset: https://config.voip2gsm.de/users/requestpass
- Security/Geo-Blocking: https://config.voip2gsm.eu/users/security

## External Presence
- **YouTube:** https://www.youtube.com/@voip2gsm (2.46K subscribers)
- **Trustpilot:** https://de.trustpilot.com/review/voip2gsm.eu (18 reviews)
- **ip-phone-forum.de:** https://www.ip-phone-forum.de/threads/voip2gsm-fragen.307593/
- **teltarif.de forum:** https://www.teltarif.de/forum/a-voip2gsm/
- **teltarif.de Vergleich:** Platz 2 (0,4 ct/min, 30/30-Takt) im Festnetz-VoIP-Vergleich
- **Reddit:** https://www.reddit.com/r/de_EDV/

## FAQ Articles (Complete List)
All available at https://www.voip2gsm.eu/support/kb/faq.php?id=[ID]

### Caller ID / CLIP
- id=64: What can I set as caller ID?
- id=79: Important changes as of 01.06.2023 (§120 TKG)

### Phone Numbers
- id=24: Do I need a phone number?
- id=12: Do I automatically receive a number?
- id=22: Do I get an answering machine?
- id=13: Fax number or phone number?
- id=11: Can I get 03221/03222 prefixes?
- id=80: How do I get my number? (STARTER)
- id=81: How many numbers can I order? (STARTER)
- id=89: Porting (all details)

### General Info
- id=27: Can I test the service beforehand?
- id=26: Confirmation link in email expired
- id=28: Are there landline or all-net flats?
- id=29: Cost check notes
- id=78: Always specify your SIP-ID

### Quick Start
- id=17: How can I start phoning fastest?
- id=86: How to set up STARTER account
- id=82: How many lines does STARTER have?
- id=83: Can I upgrade STARTER?
- id=84: What can/can't STARTER do?
- id=85: Does STARTER have HD?

### Data Protection
- id=48: Emails after contract termination
- id=47: Deletion of stored data (GDPR)

### Technical
- id=5: DTMF tones not transmitted
- id=35: AVM Fritzbox setup
- id=71: CODECS
- id=61: DS-Lite
- id=45: SIP-ID / SIP-Trunk
- id=88: SIP server selection in user center
- id=87: SIP server selection

### EU Tax Changes
- id=40: Business customer / freelancer
- id=36: Private customer — do I need tax ID?
- id=41: Price guarantee
- id=42: Contract data EU tax number
- id=38: What happens to my number?

### Features
- id=58: API
- id=59: EVN (Einzelverbindungsnachweis)
- id=70: ISDN features
- id=57: Last call cost (dial 9999)
- id=60: Monitoring
- id=67: Price overview (PBX)
- id=68: Features (PBX)

### Geo-Blocking / IP
- id=69: Geo-Blocking
- id=20: Is my IP blocked?

### Cost Brake
- id=43: What time period?
- id=10: Can I disable it?
- id=8: Can I change it myself?
- id=62: What happens when reached?
- id=9: What stages are available?

### Menu: Connections
- id=87: SIP server selection

### Menu: Forwarding
- id=4: Incoming calls without paid number?
- id=1: What does "only if offline" mean?
- id=3: What does "parallel ring" mean?
- id=2: What does "immediate forwarding" mean?

### PBX
- Miko.PBX: full cloud PBX (no user/device limit, free license)

### Billing & Payments
- id=46: Tax number / VAT
- id=54: Tariffs, prices, costs
- id=55: Price announcement
- id=56: Call forwarding
- id=65: Invoice not available?
- id=72: Invoice by email
- id=73: Payment processing (all methods)
- id=76: Balance not credited/missing

### Security
- id=44: Login credentials not working
- id=50: Anonymous calls
- id=51: Many SIP IDs (3+ same IP)
- id=52: International calls
- id=53: Technical problems