When you go into hold off a call handler or subscriber when the target extension is busy, if you're the first person in line Unity will try the extension then come back and tell you the extenion is busy and give you the option of sticking around or leaving a message - if you're back further in line you'll hear 30 seconds of music (there are 10 prompt files that are played in order here - out of the box they're all the same but you can stick other WAV files in here if you like) - after each 30 second snippet is played it'll check again to see if someone is ahead of them and it'll ask you if you'd like to keep holding or leave a message.
If you're not hearing this it's likely that you're not on hold in the Unity system but are on hold in the phone system (i.e. the call was released to a call queue or something along those lines). This is always the behavior Unity uses for internal holding and you can't chang it beyond editing the prompts played for hold music...
I've set up a workaround on some sites where different options were required, and have set the "press to hold key" to go to a call handler, which plays a greeting to the effect of "thank you for holding, you are in a queue, trying for an operator" - after the greeting the call handler is set to "attempt transfer for" the original called number.
This way you can have your own options in the greeting (leave message, try other dept etc) and still give the illusion of queuing.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
Over the last few months, I have had the privilege of working on SI...
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...