Thanks for your reply. After further troubleshooting, I found that's not the translation problem. In order to isolate the problem, I use the 7 digits as extension on the phone, but incoming still didn't work. I think there is some SRST configuration problem in my config. I post this as another question in the forum, if you are interested, please see this topic:
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.