Users are making calls from Cisco IP Phones hat are registered on a Cisco Unified Communications Manager cluster through an H.323 gateway to the PSTN phones. Sometimes these users report that calls are dropped after they have talked for some time. Different Cisco Unified CM servers have been rebooted for testing during production hours. Currently Cisco IOS 12.0 is used on the H.323 gateway. Which change helps to prevent calls from dropping when a Cisco Unified
CM server is rebooted during testing?
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