{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8489874","patent":{"patent_number":"US-8489874","title":"Encryption STE communications through private branch exchange (PBX)","assignee":null,"inventors":[],"filing_date":"2004-12-10T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["H04L","H04L"],"num_claims":21,"abstract":"A reach back secure communications terminal includes a digital PBX adapter that offers immediate and secure voice, data and video connectivity over any of various commercially available PBX systems. In addition to use with a PBX system, integrated components simplify access to varied networks allowing deployed users to select and connect quickly to a network that best supports their present mission. Commercial or optional NSA Type 1 encryption may be implemented. Networking options include any of PSTN, PBX, GSM (or CDMA or other cell telephone standard), SAT, IP and WiFi. The digital PBX adapter includes an audio mixer that converts a 4-wire input from a handset jack of a PBX handset base, into a 2-wire output destined for an encryption unit (FNBDT). The user determines a necessary gain of the audio mixer for the particular PBX system by trial and error using a multi-position switch."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Encryption STE communications through private branch exchange (PBX)","description":"A reach back secure communications terminal includes a digital PBX adapter that offers immediate and secure voice, data and video connectivity over any of various commercially available PBX systems. I","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8489874","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8489874","citation_suggestion":"Patentable. \"Encryption STE communications through private branch exchange (PBX)\" (US-8489874). https://patentable.app/patents/US-8489874","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8489874","json":"https://patentable.app/api/llm-context/US-8489874","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:33:33.144Z"}