I'm not very familiar with the species you have, but the usually once the male grasps the female (or female substitute) he stops calling and tries to go about his business quietly. More noise at this point will just draw in competitors or predators. A male mistaken for a female will repeatedly give a 'release call' to let the dude who grasped him know he's not into that sort of thing. This is often a shorter call.
This kind of reasoning can lead to disaster, an open pond isn't the same as an enclosed container. For example, a pickerel frog will do in a leopard frog it was happily sitting beside at the pond when put in a common bucket by way of poison.
I'm not saying yours cohabiting will lead to trouble (I really don't know in your case), just that if you don't know for sure they can live communally in captivity and especially if you don't have much experience with a species it's usually considered prudent to house them separately.