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Let me share the experience of moving from Unrestricted to Restricted CUCM version. The reasons for migrating were: a possibility to use Cisco Jabber to transfer files through MRA (Mobile and Remote Access), encryption and other security features, and also a solution for the double ringing signal problem during Cisco Jabber calls through MRA to PSTN. According to the compatibility matrix, this problem has arisen because Cisco Expressway were too new (12.6.1) for CUCM (11.0). By the way, CUCM was...
29.01.2021 12:46:13

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