[Asterisk-Users] Aastra phones - disable call waiting

[Steve Davies]

Hi,

Does anybody know whether it is possible to completely disable call
waiting on an Aastra 9112i?

The latest 1.4.x firmware allows the call waiting /tone/ to be
disabled, but I have users who really do not want a second call to
ring them at-all if they are busy, yet the Aastra seems to insits on
using CWI.

Many thanks for any hints and tips.
Steve