200 Private Libraries - why???????? Surely a user doesn't need this many.
From PI manual under KEY. In theory you can have up to 255.
PRIV_LIBS [2] 0..10..255 (limited by numbering plan)
Determines the maximum number of speed call (Private Library) numbers available.
So when you enter this you get.....???? Or something else?
*: lib 1 1,400,400
FROM PRIV_LIB#- 7000 (first Priv.Lib.)
TO PRIV_LIB#- 7039 (last Priv.Lib)
Although theoretically it's possible I can't see why anyone would want to. What's the reason? Are Public not suitable? I don't know anyone who uses Priv.Lib. these days (and haven't seen anyone in over 12yrs use more than 5-10).
As for volume I got this from the user guide
Volume Adjustment
Press the volume key to increase or decrease the volume of the phone loudspeaker and handset.
While the volume is being changed, the top line of the display shows the volume level.
Speaker volume levels range from a MIN unit value of 0 to a MAX unit value of 9 (14dB range).
The Handset volume level ranges from a MIN unit value of 0 to a MAX unit value of 9 (14dB range).
Speaker and Handset each has its own audio level and is independently influenced by volume buttons as follows:
• Speaker: When conversing through the speaker, voice volume can be adjusted. Volume of call monitoring, paging, etc.
can also be adjusted. This can also be done from idle.
• Speakerphone: When conversing hands-free, the built-in sensitive microphone is used to amplify your voice. The system
operates in such a way that the two connecting parties (i.e. you and the far side) cannot be heard simultaneously; the
stronger party is heard. Press VOL + to hear the far side more strongly, press VOL - to be heard more easily (or to
break in).
• Handset: When conversing through the handset or headset, receiver volume can be adjusted.
Or are you wanting to adjust the gain level for speech? This can be done but I'd look at other issues before getting in to adjusting this.
As for contrast, I can't find anything in the user guide but I'll do some digging.