Jumma Prayer - , Replying Salaam to the Imam after he takes his place on the Mimbar

When the Imam gets on the minbar for the Khutbah as gives the salaam,
do the people reply of keep silent for fear of losing the rewardof the
Jumu'ah khutbah?
Jazakumullahu Khayran
As salaamu 'alaykum
al-hamdu lillaah.
If the Imam ascends the mimbar and greets the audience with the salaam
then the audience should respond. This would not be considered
frivolous discourse and would notviolate the silence required for
listening because the actual khutbah has not yet begun. Therefore,
until then, the audience can recite praises of Allaah and duaa', and
also repeat after the mu'athin who calls for prayer, which is timed
after the Imam has actually greeted the audience and has taken his
place on the mimbar.