Consider sending real-time voice from Host A to Host B over a packet-switched network (VoIP). Host A converts analog voice signal to a digital 128 kbps bit stream on the fly and then groups the bits into 64-byte packets. There is one link between Hosts A and B with transmission rate 4 Mbps and propagation delay 10 msec. As soon as Host A gathers a packet, it sends it to Host B. As soon as Host B receives an entire packet, it converts the packets bits to an analog signal (for the speaker on Host B). How much time elapses from a user speaking at the Host A (i.e. from the original analog signal is received at Host A) until a user at Host B hears the corresponding voice (only consider the encoding delay, transmission delay and propagation delay and ignore the decoding delay)?