Bold Line Guard; GSM-PSTN Converter

The Bold Line Guard is the most cost-effective way of transforming existing digi-diallers into dual-path signalling devices.

The Line Guard is a central station product, able to transmit Fast Format, Contact ID and SMS, providing GSM back-up to existing PSTN devices.

With practically no installation required, the Line Guard really is the easiest way to achieve dual-path signalling.

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