I had to give this module a poor rating because it uses a module called "ESL" in its core code which cannot be found anywhere within CPAN.
I had just started looking for a module to talk to freeswitch when I saw this one. While there are not many modules for this and something that ties to a event framework like anyevent is nice, this module cannot be used in its current form by anyone unless its fixed.
There is no documentation on how to go about getting that module if it is possible at all. This basically makes this module unusable and useless in terms of a public release on CPAN. Perhaps author forgot to put the other module on CPAN?? In either case at this state it is better to give this module the lowest rating till its usable.