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Recharge and SMS Modem


sms modem recharge modem 8 port modem

Driver Download

Other Feature:

  • AT Command Support
  • USSD Command Support

In addition to this 8-port modem pool, There are also versions of the device with 16, 32 and 64 GSM modules.

Support Windows and Linux Operating System

The 8-port USB GSM modem pool we tested has 8 Wavecom Q24plus GSM modules that are quad-band and can be used on almost all GSM networks in the world.

Modem modules

Multi-port modem pools use individual modem modules for each port and can be fitted with different modules. The most common choices are the Wavecom Q2303, Q2403 and Q24Plus GSM modules but there are also modem pools with 3G modules on the market


For GSM networks the Q24Plus is the best choice. This modem module is more expensive than the Q2303 and Q2403 modules but is quad band, and therefore usable on almost all GSM networks in the world. The Q24Plus is of a newer design, more reliable and has fewer incompatibilities with GSM networks.

Installation and set up

The modem pool lacked documentation but this was not a problem because the installation was straightforward. The CD contained the USB drivers for all modern Windows versions and the installation on the 64-bits version of Windows 7 went without problems. After the installation of the drivers and a reboot of Windows, the 8 Wavecom GSM modules are all found automatically in the full edition of Diafaan SMS Server.

SMS send speed

Time to send 4000 messages of 160 characters with all 8 modems, delivery confirmation enabled. All messages sent to the mobile number of the modem (concurrent send and receive)
Avarage Time: 55 minutes 30 seconds


The 8-port USB GSM modem pool we tested is an excellent device that is compact and a lot easier to set up and use than multiple single GSM modems.

Recharge and SMS Modem

recharge modem

USB Single Port

flexiload modem

8 Port Q2303 Model

bulk sms modem

8 Port Q2403 Model