There are various technical possibilities available to transmit the alarm and breakdown messages from burglary and hold-up alarm systems to the intervention centers, such as police, Securitas, etc.
Using automatic dialing equipment integrated in the burglary and hold up alarm systems, messages can be transmitted through the public telephone network in spoken or digital form. In larger agglomerations, the special alarm transmission networks TUS 35 and Alarmnet are available.
In these audio frequency transmission systems, the telephone subscriber lines are shared for alarm transmission without interfering with normal telephone conversations.
TUS 35 and Alarmnet guarantee high transmission reliability with permanent monitoring of the alarm unit to the intervention center.
Professional alarm receiving equipment in installed at the police, fire brigade and also Securitas, so that the various alarm transmission systems can be received without interference all round the clock.