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X is the number of selected programkey 
select one programkey then long press it for 2s, select KeyType as BLF 
select one programkey then long press it for 2s, select the account you want to config 
to use intercom 
input the name of this programkey 
select one programkey then long press it for 2s, input strings for Label to define a 
name 
input the monitored phone number of this programkey 
select one programkey then long press it for 2s, input the outgoingn call number for 
this programkey 
input the externsion number of this programkey,usually is a pickup code or prefix 
select one programkey then long press it for 2s, input the pickup code prefix for this 
programkey