Operating instructions

TransTel Model TD-824-I Digital Telephone System – Key Telephone Operation Manual
Page 191
Volume Levels Programming (Permanent)
You can permanently set the volume levels on your telephone.
Press PGM.
Press 6.
Dial 1 to set Ringing Volume.
OR
Dial 2 to set Speaker Volume.
OR
Dial 3 to set Handset Volume
OR
Dial 4 to Set Ringing Volume Increase (Rings louder as the call ages)
OR
Dial 5 to set the Ringing Frequency (Pitch)
And adjust the pitch using your volume up and down keys on your telephone.
OR
Dial 6 to set Microphone Level
OR
Dial 7 to set Camp-On Tone Volume
Press the Volume UP or Volume DOWN to reach the desired volume level.
Press PGM when finished.