I cannot get more than 4 lines on 57i phone when using XML autoconfiguration. I think that the problem does come from the switch between aastra.cfg, where we have a default setup for line 1 with "XXNAXX" and mac.cfg. If i remove the "XXNAXX" default configuration inside aastra.cfg, then i can get 6 or 9 lines working on the 57i. But doing this is not possible because in some situation the phone does not register at login time. I've found as well that it is better to put the dialplan setup inside aastra.cfg. If i put it inside mac.cfg, i can get phone freeze at logout time, so the phone need to be powered off to get it back to life. The freeze do arrive only when there is a high number of configured keys on extensions (we are using 2 extensions by phones). Please Aastra1 could you check this for the next firmware ? Thanks for your listening and serious work on xml scripts.