IP Telephony and Phones

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Hi All,   I work for a company that has two CUCM 8.5 clusters. The company is planning one maintaining one cluster, lets call it Cluster A, upgrading it to version 11.5 and then migrating over the users from the 8.5 cluster, lets call that Cluster B....

de1denta by Level 3
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I am in the process or replacing three EOL 3800 voice gateways (H323) with 2911.  I am having issues with one location and curious on feedback.   I replaced the router 2 weeks ago.  Everything was fine until earlier this week.  The circuit went hard ...

Hello Everybody   I have old Cisco IP phone I want to Repleas it with New Phones which have all old configuration  which belong to old ones  can any one tell me what is steps should id or give document which help me can i import certain phones which ...