The symbol ‚+‘ is to indicate the country code. It has to be replaced with the international dialing prefix used in the caller's location. This is usually 00. ‚+‘ is supported in the GSM network only.
‘+’ is not a “GAP-keypad Code”. (according GAP “#, *, 0 – 9” Relate to the feature dialed digits (basic) [N.4] and outgoing call [N.1], NG-DECT Part 3 (CAT-iq 2.0 ) states: “For sending digits NG-DECT Part 3 inherits the rules mandated by the GAP profile)
The digits mandated for GAP are currently editable for a number to be dialed. ‘+’ is not editable.
Currently vCards received for the local directory (e.g. via Bluetooth) with a ‘+’ within a number are converted: “00”.