H3C MSR 20-20 Command Reference Manual page 238

238 C 14: E1-F I C C
HAPTER NTERFACE ONFIGURATION OMMANDS
When the E1-F interface is working in unframed mode, it is a 2048 kbps interface
without timeslot division and is logically equivalent to a synchronous serial
interface.
When it works in framed mode, it is physically divided into 32 timeslots numbered
0 through 31, where timeslot 0 is used for synchronization.
Related command: fe1 timeslot-list.
Example # Set E1-F interface Serial 2/0 to work in unframed mode.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] fe1 unframed