Hello there,
If you are in need to get AS2 connection to have edi transaction with your partner, I can help you with the Jscape MFT server to implement AS2 for you. I am currently working with Jscape's AS2 setup so I can help you with this instead of PHPAS2.
Please let me know if your are interested with this. I will provide you details about this.
If you are interested with this. I can also provide you the complete documentation on setup.