Outlook integration with 3CX 15

[tsukraw]

So just to confirm. You require a + prior to the country code to dial out correct?
So if you have a number in outlook as +1-xxx-xxx-xxxx it shows up in 3CX phone as 1-xxx-xxx-xxxx so it is stripping the + off the front correct when dialed with CTI.

Have you ever though about on your 3CX system creating a outbound rule to add the + to numbers that dont have it?

you could do something like
Calls to numbers starting with prefix
1

Calls to Numbers with a length of
11

Set your outbound rule.
Strip 0
prepend a +

What this would do is an number that is dialed with 1-xxx-xxx-xxxx would automatically have the + sign added to it.

Let me know if that works for you.