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V.3 5
Fiber Modem V3 5
Remark:
Remark:
Remark:
Remark: Pseudo-random sequence code test can be made only under a loopback status. At
this moment, constantly lightening of LOOP and PTOK/CRC lamps shows local status, flash
shows remote status; TXD and RXD lamps are used for showing the status of local TXD or
RXD.
5.3.4
Framing/non-framing
5.3.4
5.3.4
5.3.4 Framing/non-framing
Framing/non-framing
Framing/non-framing and
Totally 32 coded switches S1, S2, S3 and S4 are used for E1 time slot setting.
st
1
switch (S1.1) is used for controlling E1 framing/non-framing. "ON" refers to
�
non-framing mode.
31 switches, from 2
�
st
the selection of 1
set at "OFF", the corresponding time slot is not selected. The rate of V.35 interface is
completely dependent on the number of the selected time slots. For example: the setting
rd
of 3
switch to "ON" and all other switches to "OFF" indicates that 2
selected, at this moment the rate is 64K; the setting of 7
other switches to "OFF" indicates that 6
2×64K=128K. TS0 setting is used for specifying E1 frame to be transparent or framing:
"0"--framing, "1"--non-framing. But the bit has to be specified in combination with other
time slots. TS16 setting is used for controlling E1 frame structure to be PCM30（CAS）
or PCM31 （ CCS ） : '0'—PCM30, at this moment 16
transmission service; '1'—PCM31, 16
Besides, TS1—TS31 are respectively used for controlling the selection of 1
slots: '1'—the corresponding time slot is selected; '0'—the corresponding time slot is not
selected.
Typical application： Non-framing mode: 1
�
to "OFF" (other switches are located in such a way that the setting of non-framing is
unaffected) Framing mode: 1st switch is set to "OFF", and all other switches are set
according to the time slot positions to be used by E1 channel and the rate of V.35 port. (If
it is set to tracking remote time slot, the time slot switch will become invalid)
Attention:
Attention:
Attention:
Attention: Ex-works S1, S2, S3 and S4 are all set to "OFF"
Attention:
Attention:
Attention: The setting of tracking remote time slot; S5.2 to "ON"; S5.1 and S5.3 to "OFF"
Attention:
Fiber Link
Fiber Modem V3 5
Local
R e m o te
pseudo-random
pseudo-random
pseudo-random
pseudo-random Code
and
time
slot
settings
and
and time
time slot
time
slot
slot settings
settings
settings
E1 Time
E1
E1
E1
Time
Time Slot
Time
Slot
Slot Setting
Slot
nd
nd
—32
(S1.2~S1.8, S2, S3, S4), are respectively used for controlling
st
–31
time slots. Set at "ON", the corresponding time slot is selected;
th
th
time slot can be used for transmission service.
Page 10 of 11
MODEL7304 User Manual
V.3 5
Code
Code
Test
Test
Code Test
Test
Setting
Setting
Setting
th
th
and 8
switches to "ON" and all
th
and 7
time slots are selected, with a rate of
th
time slot must not be used for
st
switch is set to "ON", and all other switches
nd
time slot is
st
st
—31
time
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