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Videotelephony / Session Initiation Protocol / Session border controller / SIP connection / SIP Trunking / VoIP phone / Business telephone system / Telephone exchanges / IP Multimedia Subsystem / Telephony / Electronic engineering / Computer-mediated communication


ESBC 8528-4B diagram072610
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Document Date: 2014-02-07 21:44:08

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File Size: 3,62 MB

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