ONK-EC20CE-32 4G SMS Gateways (MODEM POOL, CAT POOL) – Product Description & After-Sales Policy
Product Features:
- Connects directly to computers via USB interface
- Controlled through PC software (supports up to 32×8=256 ports control)
- Supports VoLTE technology
- 32 SIM card slots with simultaneous SMS/MMS sending/receiving capability
- Supports call recording function
- Network compatibility:
- LTE-FDD: B1/3/5/8
- LTE-TDD: B34/38/39/40/41
- WCDMA: B1/8
- TD-SCDMA: B34/39
- EVDO/CDMA: BC0
- GSM: B3/8
- Compatible with India and Southeast Asian markets
Why Choose Our Product? Key Advantages:
- 16 Years of Expertise
- With 16 yearsof R&D and manufacturing experience in China, we deliver proven, reliable solutions.
- Industry-Leading Multilayer PCB Design
- Exclusive multilayer board technologyensures superior impedance matching and unmatched stability compared to competitors.
- Custom Hardware & Software Solutions
- We offer tailored hardware and software customizationto meet your specific needs.
- Advanced API Software (OPENSMS) – Optional Add-On
- Seamlessly integratethese powerful features:
- SMS/MMSsending/receiving
- Call recordingwith auto speech-to-text conversion
- Forward messages/recordings to social media apps
- IMEI modification& USSD command support
- Secondary developmentsupported (MySQL/SQLite database compatibility)

- After-Sales Service Policy:
- 7-Day No-Question Return
- Returns accepted within 7 days of receipt
- Products must be in original condition (unused, complete packaging)
- Customer bears return shipping costs
- 2-Year Quality Warranty
- 24-month warranty from purchase date
- Free repair service for quality issues during warranty period
- Valid proof of purchase required
- Warranty exclusions:
- Human-induced damage or improper use
- Unauthorized disassembly/repair
- Force majeure circumstances
- Seamlessly integratethese powerful features:






