Hello,
I am actually experiencing the same problem initiating intercom and paging services on Grandstream GXP 2020 phones. The intercom feature code does work, but extension/phone doesn't auto answer, it only rings. Same is happening with the paging group extension.
I need to know what changes I should make in the ringtones.xml file for these phones to be able to auto answer if someone uses intercom feature code or paging group extension.
Also I can't seem to find the ringtones.xml file on my server. Where it should be located? I'm using pbxnsip Centos version.
I would appreciate if someone can help me with this issue.