ONK-EC20CE 4G 16 Port SMS MODEM gateways

• Connects directly to computers via USB interface
• Controlled through PC software (supports up to 16×16=256 ports control)
• Supports VoLTE technology
• 16 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:

1. 16 Years of Expertise

   • With 16 years of R&D and manufacturing experience in China, we deliver proven, reliable solutions.

2. Industry-Leading Multilayer PCB Design

   • Exclusive multilayer board technology ensures superior impedance matching and unmatched stability compared to competitors.

3. Custom Hardware & Software Solutions

   • We offer tailored hardware and software customization to meet your specific needs.

4. Advanced API Software (OPENSMS) – Optional Add-On

   • Seamlessly integrate these powerful features:

     • SMS/MMS sending/receiving

     • Call recording with auto speech-to-text conversion

     • Forward messages/recordings to social media apps

     • IMEI modification & USSD command support

     • Secondary development supported (MySQL/SQLite database compatibility)

Designed for performance. Built for your needs.

1. 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

1. 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