Description
Reviews
| Brand | - |
| Category | Office Equipment, Supplies & Services / Phone Recording Devices |
| Origin | - |
| Brand | Zipei |
| Model Number | IP1-F |
| Interface Type | USB 2.0 |
| Detection Method | Polarity Reversal & Soft Off-Hook |
| Supported OS | Windows 10/11, Linux |
| Audio Format | WAV, PCM |
| Sample Rate | 8kHz to 48kHz Adjustable |
| Development Support | SDK included (C++, C#, Java) |
| Power Supply | USB Bus Powered |
| Dimensions | 75mm x 45mm x 20mm |
Anonymous
Mar 24, 2026
Rating: 4/5
Solid hardware, good driver support
Works well on Windows 11. The soft off-hook feature is sensitive but accurate. Would give 5 stars if the Linux examples were more extensive.
Anonymous
Mar 22, 2026
Rating: 5/5
Exactly what was needed for prototyping
Clean audio output and precise event triggering. This kit saved us weeks of building a solution from scratch.
Anonymous
Mar 22, 2026
Rating: 5/5
Reliable for high-volume recording
We deployed ten of these units for our QA team. No dropouts or audio glitches after three months of continuous operation.
Anonymous
Mar 20, 2026
Rating: 5/5
Perfect for custom call logging apps
The SDK documentation is clear and the polarity reversal detection works flawlessly with our legacy PBX system. Integration took less than a day.
Anonymous
Mar 15, 2026
Rating: 3/5
Good but requires coding knowledge
The hardware works fine, but it is definitely a development kit. If you aren't a programmer, you might struggle to set it up without pre-made software.
Anonymous
Mar 10, 2026
Rating: 4/5
Great value for developers
For the price, you get a lot of functionality. The API is straightforward. Just make sure your phone line actually supports polarity reversal.
Q: Does this device work with VoIP lines or only analog PSTN?
A: The IP1-F is designed specifically for analog PSTN lines to detect polarity reversal. It is not compatible with pure VoIP digital streams without an analog telephone adapter (ATA).
Q: Can this record two calls simultaneously?
A: No, each IP1-F unit handles one phone line. To record multiple lines simultaneously, you need to connect multiple devices to your computer's USB ports.
Q: Do you provide sample code for visual basic?
A: We currently provide samples for C++, C#, and Java. However, since the DLL is standard, it can be imported into Visual Basic .NET projects easily.
Q: Is the SDK compatible with Python?
A: While the native SDK is written for C++ and C#, many users have successfully created Python wrappers using ctypes or SWIG. We do not provide official Python libraries yet.
Q: What happens if my phone line does not support polarity reversal?
A: If polarity reversal is not present, the device can still function using the 'Soft Off-Hook' detection method, which monitors audio energy levels to determine call status, though it may be slightly less precise.
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