PhonerLite doesn't hang up?

Question

Asterisk

Good afternoon colleagues.
Regarding the translation of PhonerLite calls. When I receive a call on PhonerLite and want to transfer it to another subscriber, he also has PhonerLite, I drag the call one to the other, all the bunches are transferred. But when I hang up on the second PhonerLite, the call on the other side continues, seconds go by, about 20 seconds. That is, calls from a cell to an internal number, for example 123 (PhonerLite), he transfers the call to 345 (PhonerLite), 345 hangs up, but seconds go on the cell. I close and open PhonerLite, all the rules, the call is reset. Doesn't work for the second time or so.