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Introducing a New Android-APP GSM↔SIP Gateway

We converted traditional GSM gateway hardware into a pure Android software solution. Any supported Android device can now act as a full SIP ↔ GSM gateway with two-way call bridging.

What It Does

Turns Android devices into portable SIP↔GSM bridges without the need for physical gateway hardware.

Why It Matters

No external boxes, no antennas, no wiring — ideal for mobile, remote, and backup GSM routing.

Who It’s For

VoIP providers, enterprises, and businesses requiring hybrid GSM/SIP call routing.

Converts supported Android devices into SIP↔GSM gateways
Supports full two-way call routing
No hardware gateways required
Highly scalable by adding more Android devices
Reduces deployment and maintenance costs

Reduces deployment and maintenance costs

Hardware vs Zerkat App

Feature	Traditional GSM Gateway (GOIP, Dinstar, etc.)	Zerkat App
Form factor	Dedicated physical box	Pure Android application
Hardware required	Gateway device + SIM slots	No extra hardware
Deployment cost	High	Low (software-only)
Scalability	Limited by hardware	Highly scalable
Portability	Fixed installation	Portable
Maintenance	Hardware replacements	Software updates only
Power consumption	Continuous power	Battery / low power
Setup time	Hours to days	Minutes
GSM ↔ SIP bridging	Yes	Yes (full two-way)
Asterisk / PBX integration	Yes	Yes
Remote management	Limited	Full Android control
SIM blocking risk	High – SIMs often blocked due to fixed location and non-human traffic patterns	Very low – humain behavior portability, natural cell tower movement, normal internet usage (YouTube, TikTok, WhatsApp, Gmail, Messenger)