To give roseway a manageable task I think a script would have be added to the firmware to generate output that identically or very closely followed the HG612 output for the needed commands. A script for the main stats (as from xdslcmd info --stats) alone would be well worth it - it would alow snr and error and status monitoring, then bit loading and snr/tones would be my second priorities. If you needed Hlog or QLN which are only updated at sync you could get them manually.
That was in my thinking, cloning of the HG612's xdslcmd. However, I believe this program only supports telnet and not SSH?
I could of course recompile the images with busybox login support for telnet. Telnet is supported, but only if no password is set. When a password is set SSH is enabled. Not setting a password will only leave it open for the network, not the outside world of course since by default the outside world doesn't have access to the modem.
I'll setup my HG612 and make an alias for the differences.