24 Hour Call HandlingFirst County Monitoring can provide your organisation with Out of Hour Message Handling.![]() With the provision of a DDI number assigned to your company, we will field your engineering calls to your engineers out of hours or represent your company when your offices are closed. This is an invaluable service that provides your company with the confidence that your clients are being serviced 24 hours a day. Telephone: 01757 244445 |








