Great. But I'm still a little confused. Does zaptel 1.4.12 work with asterisk-1.6.0-rc4? It looks like we first upgrade to zaptel 1.4.12, and then to dahdi. We can go back to this release of zaptel if we have problems with dahdi. Or if we go back to zaptel, do we go back to 1.6.0-beta9 also? sean