YX 8/16/32/64 Ports 2G GSM Modem Pool for Bulk SMS, Support IMEI Change and STK AT Command

Product Overview

This 2G GSM high-capacity SMS modem pool is built around one idea: a single USB connection to a PC and many independent 2G radios working side by side. Choose the frame that matches your volume — 8, 16, 32 or 64 ports — and every port takes its own SIM card and handles its own sending and receiving over the mobile network. Nothing is routed through a hosted service or an internet connection, so messages leave from hardware you own and control. It is a desktop unit: plug in the USB cable and your software sees each port as its own device. Messaging companies, telecom integrators and enterprise communications teams are the usual owners. If you are replacing an ageing pool or stepping off a rented sending route, the day-to-day setup stays the same.

Picking Your Port Count

• Start with your SIM count — the real question when you buy a GSM modem for sending SMS at volume is how many cards you want online at once; the frame size follows from that number.
• 8 ports — the entry frame, suited to a first deployment, a pilot campaign or a single client account with a modest daily volume.
• 16 ports — the natural step up when a starter set gets tight: more SIMs online on the same desk footprint and the same single USB cable.
• 32 ports — for teams running several campaigns or client accounts at once, or spreading load across a wider group of operator SIMs.
• 64 ports — the densest frame in the range, for operations that want a whole SIM fleet in one chassis managed from one PC.
• Room to grow — all four frames share the same command set and the same included software, so moving up a size never means relearning the setup.

2G Network Availability

2G availability is the one thing to settle before you order. This pool works on 2G GSM networks only, so it cannot fall back to 3G or 4G when a local 2G service is switched off. Australia, South Korea, Japan, the United States and Canada have already retired their 2G networks, and other operators are winding theirs back, so confirm with your carrier that 2G is still live at the address where the unit will sit. Indoor signal matters as much as national coverage — basements and metal rack rooms are the usual reason a port keeps re-registering. Check too that each SIM is provisioned by the operator so you can send text messages in large numbers from it.

Key Features

• High-Capacity SIM Management
  •  Configure with 8/16/32/64 SIM cards simultaneously using standard 2FF Mini SIM slots (1FF conversion available)
  •  ndependent SIM operation allows parallel processing and load distribution
  •  Dedicated SIM recognition for optimal network utilization
• Professional-Grade Messaging Performance
  • Achieve transmission speeds of ≈1500 SMS per port hourly with precision timing control
  • Real-time delivery reports with status tracking
  • Scheduled messaging with advanced timing parameters
• Communication Features
  
  • STK (SIM Tool Kit) functionality for value-added services
  • USSD session management for balance queries and service codes
  • MMS composition and transmission capabilities
• Enhanced Operational Control
  • IMEI management and security features
  • Network registration status monitoring
  • Signal strength indicators and quality metrics
• Complete Software Solution
  • Includes SMS Caster professional software suite
  • Bulk contact management with grouping capabilities 
  • Export/import functions for data management  

Applications

• Marketing campaigns — schedule a promotion across a contact list with each SIM taking a share of the run, so no single card carries the whole volume.
• Transactional messages — verification codes and order confirmations leave through your own SMS gateway hardware instead of a third-party route, which keeps the sending path under your control.
• Service alerts — appointment reminders, delivery notices and outage warnings sent on a fixed schedule to a list you manage yourself.
• Internal broadcasting — staff notifications and shift messages for sites where an SMS still reaches people faster than an app notification.
• IoT and device messaging — SIM-terminated messages for remote units that report status or accept simple commands.

Control Features & Software

Technical Support & Model Matching

Every modem we ship includes a printed instruction manual, and our engineers stay with you well past delivery. Tell us your country, carrier bands, network generation, port count and operating system, and we will match you to the right configuration. We also guide driver installation and SMS Caster / SMS Deliverer setup, help you configure AT command, STK and IMEI-change functions, and work through connection or sending faults with you through remote technical assistance. Not sure which option suits your messaging volume? Ask our team before you order.
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