Phase 2: The exchange receives B-subscriber number
nIf
dual-tone dialing is used
nTone
receiver sends the received B subscriber number to the control function
nIf
pulses are used
nThey are
interpreted by the line interface circuit
nThe
control system decides:
nWhere the call is going (under same or another exchange)
nWhich
charging method is used
ntime
of the day, weekday, billing agreements, B-subscriber number
nWhat will
be the length of the number