Legacy elevator often require complicated connections and wiring, it use POTS lines to deliver a stable and reliable connection. The existing wiring is run from the machine room, through travel cable, into the elevator cab. The advantages of analog phone lines have traditionally been two-fold. First, you can maintain service when your power goes out. Secondly, 911 is able to easily identify where you are calling from.

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Alarm and Security system for estate or neighborhood is highly rely on POTS lines in the past, With all kinds of monitor panel like burglar panel, fire panel, or elevator phone, when these panel is activated, alarm signal will be transfer to Security Company or Alarm Center, and then they will provide corresponding service, such service is usually 24h uninterrupted.

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In the past, people are not only use PSTN for their telephone, but also use it to transfer different kinds of computer data. People use Modem to convert signal in digital format to signal in analog format so that they can be transferred through telephone lines.

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POTS lines have been used of communication for SCADA system for decades. Especially for the long distance Oil&Gas transport system, POTS lines is nearly the only way to send data. But the demand for new POTS lines is decreasing, it’s maintenance is becoming even harder.

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The article outlines how Vola hardware manages alarm protocols, focusing on the Ademco Contact ID protocol. It addresses the challenges of replacing POTS lines with VoIP for alarm systems and showcases Vola's solutions for ensuring compatibility. With enhanced DTMF transmission in both Contact ID Relay and Store & Forward Modes, Vola's ATA gateways offer reliable alarm communication without changing existing alarm panels.

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As POTS lines phase out, businesses face challenges maintaining modem data communication, especially in critical systems like Point of Sale. Vola's PR08 gateway, supporting V.150.1 Modem over IP, offers a seamless transition from traditional to digital solutions. With over a decade of expertise in VoIP and POTS replacement, Vola ensures reliable and cost-effective solutions for your business's evolving communication needs.

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