Both work on an existing connection, so to me it seems that they do essentially the same thing, only that one works before the call is accepted? Documentation for the ForwardCall method, http://files.opalvoip.org/docs/opal-v3_14/d4/d8c/classOpalConnection.html#a74974e1d155b636e2f157c0e15c32d67
Is there a way to tell opal to forward all incoming calls, without using the *72 or 21 numbers?