What kinds of performance do telephones have

Say whether it is a feature or a performance. The features are just as follows:

P ----(PULSE) pulse dialing method.

T ----(TONE) Dual-tone dialing method.

REDLAL---- redial key. Allows you to redial the last call.

MUTE---- Temporarily Soundproof key.

R---- is equivalent to tapping a forked spring for a short period of time. This key can be used for programmed telephone calls to waiting services, etc.

PAUSE---- pause key.

STORE---- Store key. Used when storing phone numbers.

RESET---- reset key.

SPEAKER(HANDSFREE)---- Hands-free key for direct conversation or dialing without picking up the microphone.

VOLUME---- volume adjuster.

MAX---- volume maximum bit.

MIN---- volume minimum bit.

RINGER---- ringer adjuster.

HI---- ringer high bit.

LO---- ringer low bit.

INUSE---- Indicator light indicates when the phone is in use.