For each port the Mode may be set to either 56K or 64K. This selection determines
the bandwidth usage per DS0 (a DS0 is the same thing as a timeslot
and is also sometimes called a channel). To set the mode for port 1, type M1;
To set the mode for port 2, type M2.
If the T1 circuit being used is AMI the mode must be 56K.
If the T1 circuit being used is B8ZS the mode may be
either 56K or 64K, as the user or application may require.