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Home › Call control element constructing a session initiation protocol (SIP) message including provisions for incorporating address related information of public switched telephone network (PSTN) based devices

Call control element constructing a session initiation protocol (SIP) message including provisions for incorporating address related information of public switched telephone network (PSTN) based devices

US Patent 8891741 · Granted Nov 18, 2014

Estimated economic value: $13,272,000 ⓘ

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