IPMA Technologies Hong Kong
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Some telephones, depending on the brand and model, have the intercom function, which allows to begin communication by sending the signal. When the signal comes, the telephone set rings a signal different from the standard ring tone call. After that the telephone temporarily switches off from the telephone line and works as an intercom.
Royal Market Inc.
Royal Market Inc. is a full-service technology solutions company. We work with your company to identify your needs and provide solutions that will enable your company to gain a competitive edge in your industry.
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