IP Telephony and Phones

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Hi,   Does anyone encountered the same problem?   CUCM Version: 12.0 Current Cisco 7841 Firmware: SIP78xx.12.0 Inactive Cisco 7841 Firmware: SIP78xx.11.7 Latest Cisco 7841 Firmware: SIP78xx.12.1   Problem: Out of 100 Cisco 7841 IP Phones, only 3 Cisc...

a.burlaos by Level 1
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hi Guys,   I ran into an issue where site to site calling between cisco phones have no audio at all.  within the site, it works fine.  client is mainly using cisco phones 7841 and its cucm 10.5.  I resolved this by checking the box "Media Termination...