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SDM-309B Satellite Modem
DRP_DATA
INS_DATA
DROP CHANNELS
MN/U-SDM309B Rev. #
This configuration is used to select the
desired drop data channel signaling. The
choices are E1CCS (E1 Common Channel
Signaling), E1CAS (E1 Channel Associated
Signaling), E1_IBS, T1_IBS, E1_31_TS, T1
(T1 data signal), and T1ESF (T1 Extended
Super Frame).
On entry the current drop data channel signal
is displayed with the flashing cursor on the
first character. Use the arrow keys to select
E1CCS, E1CAS, E1_IBS, T1_IBS,
E1_31_TS, T1, or T1ESF. Press the "ENTER"
key to execute the change.
This configuration is used to select the
desired insert data channel signaling. The
choices are E1CCS (E1 Common Channel
Signaling), E1CAS (E1 Channel Associated
Signaling), E1_IBS, T1_IBS, E1_31_TS, T1
(T1 data signal), and T1ESF (T1 Extended
Super Frame).
On entry the current insert data channel
signal is displayed with the flashing cursor on
the first character. Use the arrow keys to
select E1CCS, E1CAS, E1_IBS, T1_IBS,
E1_31_TS, T1, or T1ESF. Press the "ENTER"
key to execute the change.
Programs the drop channels into the desired
time slot from 1 to 31 for E1CCS, E1_31_TS,
and E1CAS (dropping time slot 0 is not
allowed) and from channels 1 to 24 for T1 and
T1ESF.
Note: The number of drop channels is data
rate dependent. The number of Drop
Channels = DR/64KBPS. When the data rate
is 64 KBPS there is only one drop channel.
When the data rate is 1920 KBPS there are
30 drop channels.
On entry drop channel one and the current
time slot is displayed with the flashing cursor
on drop channel one. Use the up and down
arrow keys to select the drop channel to be
programmed. Use the right and left arrow
keys to choose between drop channels and
time slots. Use the up and down arrow keys to
select the time slot for each available drop
channel by incrementing or decrementing the
digit at the flashing cursor. Press the "Enter"
key to execute the change.
Operation
3–33
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