{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9736197","patent":{"patent_number":"US-9736197","title":"Call extender for inter-carrier network switch","assignee":null,"inventors":[],"filing_date":"2015-02-27T00:00:00.000Z","publication_date":"2017-08-15T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04M","H04M","H04M","H04M","H04M","H04M","H04M","H04M","H04M","H04M","H04M","H04Q","H04Q"],"num_claims":20,"abstract":"A method of extending calls includes receiving a request to establish a call session with a called party, and establishing the call session between the calling party and the called party. The method further includes monitoring the length of the established call session, and receiving a message requesting a termination of the call session. Still further, the method includes, in response to receiving the message requesting the termination of the call session, maintaining the established call session for an additional time period, wherein the additional time period plus the monitored length of the established call session is equal to or greater than a threshold of time."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Call extender for inter-carrier network switch","description":"A method of extending calls includes receiving a request to establish a call session with a called party, and establishing the call session between the calling party and the called party. The method f","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9736197","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-9736197","citation_suggestion":"Patentable. \"Call extender for inter-carrier network switch\" (US-9736197). https://patentable.app/patents/US-9736197","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9736197","json":"https://patentable.app/api/llm-context/US-9736197","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T09:35:19.162Z"}