IP PA/ audio& intercom solution for prison/jail

Emergency Call Button IP based Video Intercom

TCP/IP video interom digital singnal transmission

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IP Network School/Park Two-way Intercom Systems

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IP intercom terminal(1-button, audio & video)--TBV-8201B

IP Network intercom system IP intercom terminal(1-button, audio)--TB-6213A

SIP/TCP/IP Intercom System Terminal Panel for bank, ATM, prison, airport, square, mall, school, street.