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# Pentacomm Knowledge Base
Welcome to the Pentacomm documentation portal. Here you'll find operating
manuals for your appliance and a catalogue of known issues with their
resolutions.
## 📘 Expert Manuals
In-depth guides for configuring and operating your Pentacomm appliance —
SIP trunks, call center, IVR, call recording, and licensing.
## 🛠️ Known Issues
Symptoms you may run into and step-by-step fixes. Search by the error
message or the behaviour you're seeing.
➡️ **[Browse Known Issues](https://kb.pentacomm.ro/shelves/known-issues)**
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Can't find what you need? Use the search bar at the top of the page, or
contact Pentacomm support.