I have "di2" on SP1, SP2 and "od" on LI1, no problem, I am on 1.2.1 (Build: 2103)
I don't understand why second dial tone is no enabled by default! seems to be logical, may be not in VoIP world (I am new to VoIP), but certainly, this would be the expect behavior for getting a outside line from a PBX situation!