I have an issue on CUCM 8.6.2 of transfer. When I tried to hit transfer button on the Cisco 7962 phone, there is about 7-8 seconds delay until I can hear the dial tone. Also when the person pickup the call that I transfer into, they can't hear each other until 3-5 seconds later.
I checked the network status and QoS config on the router, they are all good. Pinged from router to CUCM delay is 45ms.
Sounds almost like a code yellow situation. What does CUCM look like from a CPU/memory/disk I/O perspective? Do you see syslog alarms warning of low memory or anything?
Assuming CUCM is healthy, you would need to pull CUCM SDI/SDL traces and look through them to see what happens how long it takes CUCM to receive the SCCP packet. Assuming it shows up on time the next question is what happens in the logs until CUCM sends the needed responses. If you're not comfortable reading CUCM logs it's probably time for a TAC case.
As jonathan said please check the CPU utilization of the sytem by using the Rtmt tool. You can aslo take packet captures from the phone and call processing node to which the phone is registered to check if there is network delay.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.