SMS for the office / SMS for software developers


Technical sheet

SMSLibX is an SMS ActiveX component (DLL library) to send and receive SMS from PC via GSM modem/phone.

SMSLibX is a product for software developers and integrators; it can be easily integrated into Windows applications source code.

If you're not a software developer, please see our SMSList visual application.


Commercial versions

License policy

  • You must buy one software license for each GSM device you have to interact with. Each license is bound to the IMEI code of the GSM device in use.
  • See further details about software license policy here.


  • Bi-directional SMS communication (SMS sending and receival)
  • Tracking SMS delivery (delivery receipt / SMS status report)
  • Text or Unicode SMS
  • Binary SMS (e.g. logos, ringing tones etc.)
  • Concatenated SMS (longer than 160 characters)
  • Flash SMS (immediately displayed on phone)
  • SMS options: validity period, class, alphabet...
  • SIM messages management
  • SIM phonebook management
  • Alert on incoming calls (and subsequent reject)
  • Call forwarding to a different phone number
  • GSM signal quality measuring
  • Modem information retrieval
  • Multi-modem support (up to 8 at a time)


  • Operating system:
    Windows 98, ME, 2000, XP, Vista, 7; Server NT 4.0, 2000, 2003, 2008.
  • Programming environment: MS Visual Basic, Visual C++, .NET C#, ASP, MS Access, Excel, Borland Delphi/C++... and any other environment supporting ActiveX integration.
  • Any SIM card for GSM mobile phones.
  • Any GSM operator.
  • Requires a GSM device compliant with ETSI GSM 07.05/07 specification (3GPP 27.005/27.007).
  • Successfully tested with the following GSM modem/phones:

    Siemens MC35i Digicom Wave GPRS M Audiotel Industrial, Modex, Celline,
    Digicom Wave GPRS / GPRS M,
    Falcom A2D,
    Huawei E220,
    Lightspeed 180M,
    Nokia 6210, 7110,
    Siemens MC55i, MC35i, TC35i, MC75,
    Wavecom WMOD2B
    and others.

    For a complete list, please see the device compatibility list.
    Pls. consider the list contents as merely indicative.

    Please verify full compatibilty between SMS software and your device before buying the product (using our free software demo).

Documentation and resources


SMSLibX can send/receive up to 20 sms/minute.

This means thousands messages per day (approx. 5,000 to 25,000).

Actual performances can vary according to several factors as: hardware device in use, environment factors (GSM network) and usage mode.

Most important factors are:

  • quality of GSM signal coverage on your modem location
  • efficiency of SMS Service Centers (SMSC) provided by your GSM operator
  • sending time: SMS traffic on peak hours may be slower
  • traffic direction: uni-directional traffic (just sending or receiving SMS) is faster than bi-directional traffic (sending+receiving SMS at a time).




  • SMS for your business

    - Working teams
    Contact your customers and mobile co-workers by SMS.
    - Mobile marketing
    Contact your audience with friendly SMS communication.

  • SMS for public services

    - Services and associations
    Contact service subscribers and associates by SMS.
    - Commercial consultants
    Remind fiscal deadlines to your customers with an SMS.
    - Medical offices
    Send appointment reminders to your patients by SMS.
    - Schools
    Keep in contact with parents and students by SMS.

  • Do more with SMS...