Printing directly to a printer on a different system

One of our clients is  planning on sending Fedex  labels directly to
their consolidator so that they can label them and ship the cartons to
Fedex's Chicago hub (and directly to the stores).

Do you know a way that we can send spool files directly from the
iSeries to the consolidator.  If they have an iSeries, i was going to
tell them to setup an outqueue and use the SNDTCPSPLF command to send
directly to the out queue, but if not what are my options.

We are not sure if the consolidator to whom they want to send the
spool files has an iSeries, but I didn't know if any you have some
other ideas? Do you know where I can get information on how to send
spool files across systems?

Any information is greatly appreciated.

-- 
Krish Thirumalai