Transcoded environment The MSI can support 240 x 16 kbit/s traffic channels in a transcoded environment, as defined by GSM. To accomplish this, four 16 kbit/s channels are multiplexed into one 64 kbit/s timeslot, as shown in the following example: 30 64 kbit/s timeslots of a serial data stream x 4 Submultiplexed 16 kbit/s traffic channels x 2 ..