Orbiter for Cisco 79XX issues

[pw44]

Hia,
after using the Cisco 7970 for some time, i did note some problems:
1) When receiving a call, the caller id is NOT displayed on the phones orbiters, but on MDs and Core/hybrid, it´s shown.
2) Even if the phone is registered as being in a room, it starts with living (but is registered as being on master bedroom).
3) When placing a call from one phone, trying to place a call from the other phone simply dies. Should it be a message like "all lines are busy now"?
Anyone aware of this?
TIA,
Paulo