The shutter release jack on the AllView. I can't get it to work with my wireless triggers.
I got the right cable (PC->2.5 mm mono TRS connector) and it'll fire as soon as it's shorted.
AllView goes to the motions of shooting, but doesn't release the trigger.
It states that it's Canon compatible, so maybe it's not shorting the connection, but doing something else. I have no clue and no Canon DSLRs at hand.
My AllView was delivered with a shutter release cable comprising a 2.5 mm TRS / stereo plug at each end. It is wired T-T R-R and S-S. No crossover. It works perfectly with my Canon EOS 500D.
I am confused because you say you have a cable with a mono TRS connector. This is a contradiction in terms. A mono 2.5 mm plug is TS only and will not work.
Note: TRS = Tip Ring Shield, a legacy description stemming from the days of manual switchboards (pre-strowger) where 1/4 inch connectors with three contacts were used to connect the Tip, Ring and Shield signals to and from telephone customers.