Depends if you use it directly on RS-232 bus or with a driver which is actually an inverter.

Bus should stay at the predefined idle state which is -12 Volts meaning that TTL logic level of the controller is at High (3 or 5 volts).

So, the answer is yes, either Serout or Hserout.

But if you drive directly the RS-232 bus, TTL should be reversed in the Serout2 setup and Hserout should only be used if there is a special setting in the PIC's UART that reverses the TTL state.

Hope this is not too complicated.

Ioannis