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Sip keep alive support – AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual

Page 767

Sip keep alive support | AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual | Page 767 / 1049 Sip keep alive support | AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN User Manual | Page 767 / 1049