Outlook integration with 3CX 15

[Fadisn]

Hello,
Just tried the Microsoft (365) outlook integration on 3CX v15, we came to a rare issue, when using click to dial from Outlook.
The dialed number comes out correctly on the softphone, but in this case (CTI) the Yealink (T46G) dials the same number but without the (+) which should be placed before the country code .. i.e. dialing (+1xxxxxxxx) on outlook comes with the same number on softphone but on Yealink it comes (1xxxxxxxx)!
Wonder if anyone has tips !?