I have a strange issue that occurred after I upgraded the 7961 firware to 8.3.3.
This issue occurs when any user attempts to transfer the call to specific extensions - after pressing the transfer key, there is dead air for appromixately 10 seconds before the line rings and the transfer key reappears. I also have the same issue when dialing these extensions across the network.
I've checked the busy trigger on the DN and it's set to two. External calls made to the extensions are not effected.
The only change to the system has been the firmware.