Use the Erlangs and VoIP Bandwidth Calculator at https://www.erlang.com/calculator/eipb/ to complete the following question.
The ABC Inc. is planning to lease a 1000 Kbps (1 Mbps) frame relay connection between two PBXs from two branch locations. On the connection, 240 call attempts with an average call duration of 10 minutes during the Busy Hour were observed. What's the traffic volume/load in Erlangs on this trunk connection?
The audio codec used on the trunk is G.729A with a 20-millisecond packet duration. What's the call blocking probability, in percentage, achieved on this trunk? Is such calling blocking probability acceptable, given the 1-5% norm in the industry?