Exchange services (cont.)
nDo
not disturb (reply by recorded messages or tone)
nWake-up/reminder
nCall
forwarding: rerouting, variants:
nunconditional:
all calls are rerouted
nforward
when no reply
nforward
when busy
nCallback:
queued to the busy number, variants:
nbusy line
callback
nno answer
callback
nLast
number redial
nRemote
control of services: other phone is used to program services to customers own phone