Execution of the
e1 stat
command does automatic reset of
any current statistics of the interface!
3.4.5 Timeslot map
The G.704 E1 frame structure consists of 32 8-bit channels (so-named
“timeslots”) which have been assigned numbers from 0 to 31.
The timeslot 0 is used to transmit the frame alignment signal (FAS) and the
additional (service) bits (Sa, Si).
The timeslots 1 through 31 are used to transmit payload data. The timeslot
16 may be retained for signaling.
The SGI-16G2 modem supports transmission within the range from one to
32 timeslots for each E1 interface. An actual amount of the timeslots
depends on a feasible DSL rate. The rate must be at least N*64 kbps to be
able to transmit N timeslots. For example, any DSL rate must be at least
512 kbps to transmit 8 timeslots.
Timeslots numbers destined for transmission are defined by timeslot map.
Each of 32 timeslots of each E1 interface can be individually included or
excluded from number of transmitted timeslots.
The
е1a (e1b)
command with the
map
map
option allows to view and to
modify a timeslot map. The timeslots destined for transmission are marked
by asterisk (
*
). The timeslots marked by minus (
-
) sign are not transmitted.
: e1a map
E1A: Long-Haul FRAMED Code=HDB3 – ONLINE
0 . 1 . 2 . 3
01234567890123456789012345678901
-****************---------------
Used timeslots: 16 Payload: 1024 kbit/s
:
31
