R&S®GN2100 Automatic Phone Patch (APP)

Shortwave telephone links

  • Overview

Key Facts

The APP option ensures automatic (as well as manual) routing of telephone calls to and from an HF link.

Key Facts

The APP option ensures automatic (as well as manual) routing of telephone calls to and from an HF link. When the option is used together with the radio processor option R&S®GS2200 + ALE software, the telephone number of the called subscriber can be reliably transmitted in addition to the automatic selection of the HF channel (link setup).

Fully featured DTMF phones (short-code dialling, etc) serve as terminals in an HF radio system equipped with APP and ALE options at both ends. The talk/listen switchover in semiduplex is voice-controlled by means of a VOX circuit. The APP automatically adapts itself to the telephone line (hybrid balance) during the linkup to the end subscriber (to PABX or PTT network) to achieve optimal transmission from radio to line network and vice versa. Via voice and tone prompts the subscribers receive information on the state and progress of the automatic linkup to the called subscriber.

The APP is operated from the front panel via keys, a graphic display, softkeys and a menu-guided user interface. If the R&S®XK2000 is the terminal unit, the numeric keypad is used for entry, the loudspeaker for signalling and the phone receiver as the talk/listen facility.

The optional voice processing unit enables the voice signals not only to be freed from transmission interference but also to be encrypted, i.e. protected against interception.

Note

Any access to a public telephone network must be in compliance with the applicable local PTT regulations.

The technical interface specifications of the APP’s telephone box are designed to comply with German regulations FTZ 1 TR 2 and FTZ 144 TV 41 regarding equipment connected to telephone lines.

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