you suggestion is right but this is strange if you think about it. To make the transfer, CCM places a new call to PSTN, apparently presents ANI of A, telco happily accepts it and deliver it to C as calling number ?!?
This means, the system can originate calls with arbitrary caller-id to (at least) cell-phones user. One malicious person could easily use caller-id as police number, or any other exploitation of this.
I'm not sure if this is know, understood and accepted by the all involved parties (telco, company, and telecommunication regulatory body).
You are correct :) this is quite a gap! Most Telcos won't accept this non-billable number (thus the doc that I sent Vlaho) but many do. We do not allow Call Forward External so this has never been a problem for us, but this is something that, as Administrators,we need to keep an eye on.
I didn't try to configure call forwarding as it was in document you send. The Telco has configured that C phone see gateway number of site. They are happy with that solution, so I leave that situation as it is.
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.