Which signals are regarded as call-progress signals as they are sent back to inform the caller about the progress of the call?

Related MCQs

• On an average, one call arrives every 5 seconds. During a period of 10 seconds, what is the probability that no call arrives?
• Which assumption prooves call arrivals has Poisson's distribution?
• The system in which call requests are kept waiting due to unavailability of trunks is known as ____________
• Erlang determined GoS of lost call system of finite number of trunks based on assumptions: 1. Pure chance traffic 2. Statistical equilibrium 3. Full availability 4. calls which face congestion and get lost
• Which functional block in GSM architecture, allocates radio resourses to a mobile call and for handovers?
• The ratio of number of successful calls to the number of call attempts is known as ______
• If a group of trunk is offered 1200 calls during the busy hour & 20 calls are lost along with the average call duration of about 7 min, then what would be the total duration of congestion period?
• During Busy hour, 1000 calls were offered to a group of trunks and 5 calls were lost. The average call duration was 2 minutes. Find Grade of Service (B)
• During Busy hour, 1200 calls were offered to a group of trunks and 6 calls were lost. The average call duration was 3 minutes. Find Traffic carried(Ac)
• Over 20 minutes observation interval, 40 subscribers initiate a call. Total duration of calls is 4800sec. Calculate load offered to network by the subscribers and average subscriber traffic?