Actually, the setting goes back to at least Release 1-T1 on MICS, and CICS 1.0. So, it has been around for quite some time. Not all phones support the volume setting, but I'm not sure where the cross-over release is for the phones. Will try to research deeper for that part.
Annacat,
Just re-read that you have newer T7208 sets, so no problem with the sets. Just CICS 1.0 and above, or MICS R1-T1 and above.
MarvO said it