MUsic on hold Help me

HOw put music on hold when the phone it’s close or hangup
I mind, when i finish to talk, how play musinc on hold?

Who ? What ? Where ? When ? How ? You need to explain a bit more what you are looking to do.

hello, how put music on hold with the phone hangup i mean, you call me, we talk and we finish to talk, that when i hangup the phone, i start listen music on hold in me phone station. and if new call incoming from pstn, the music on hold stop and answer the line.