I have had seen some problems with the dialing numbers. At the moment I have no clue where this problem is related to.
My PBX is configured to enter a "0" for land line calls.
When I add my phone number within outlook format
+49 (151) 41xxxxxx
and I disable the default "0" on the PBX it will work and I can place a call.
When I activate the "0" for I will get an error message with "null" from Jitsi with this Numbers:
0+49 (151) 41xxxxxx
00049 (151) 41xxxxxx
When I use this number example:
00 (70xx) 7xxxxx0
I will get the message "NULL" with the disabled setting:
JITSI - OPTIONS - GENERAL - CALL - REMOVE SPECIAL SYMBOLS
When I enable this I will get the same message or sometimes (?) the "not complete Number" message.
After removing all specials character manually the phone number can be used do dial out.
Special characters in Germany are:
"/" and "+" and "-" and " " (it's a blank)