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User Manual
28
5.7
Function of RC3000-SUB-DV35
5.7.1 Rules for channel allocation
RC3000-SUB-DV35 is a data sub-card with V35 interface and the channel number is configurable,
the rules are as follow:
a. Rules for automatic channel distribution: RC3000 has automatic channel distribution function.
In 8-line mode when the V35 card is inserted to the first slot, 1-8 channel of first E1 is not occupied,
it will automatically assign to these 8 channels and occupy 1-8 channel of the first E1; when the V35
card is inserted to the second slot, the 9 -- 16-channel of the first E1 is not occupied, it will
automatically assign to these 8 channels and occupy 9-16 channel of the first E1; when the V35 card
is inserted to the third slot, 17-30 channels of the first E1 is not occupied, it will automatically assign
to 14 channels and occupies 17-30 channel of the first E1 (when PCM31 as 17-31).
In the 10-line mode, when the V35 card is inserted to the first slot, 1-10 channel of the first E1 is not
occupied, it will automatically assign to 10 channels and occupies the 1-10 channel of the first E1;
when the V35 card is inserted to the second slot, 11-20 channel of the first E1 is not occupied, it will
automatically assign to 10 channels and occupies the 11-20 channel of the first E1; when the V35
card is inserted to the third slot, 21-30 channel of the first E1 is not occupied, it will automatically
assign to 10 channels and occupies the 17-30
b. Rules for manual channel distribution:
There will be position limitation for manual channel distribution. Here we will first give the
definition of cross connect groups. RC3000 can have 4 E1 at most and we use 1, 2, 3, and 4 to stand
them (each E1 is one cross group, and now we have cross group 1, 2, 3, and 4), it also has four
STBUS (2M of each) to access 4 user groups (user E1), and we refer these 4 user E1 as cross groups
5, 6, 7 and 8.
The first user E1 is a main cross group and channels of this cross group will be distributed to user
cards by default. Other user E1s are single cross group for different slots: user card in first slot will
occupy cross group 6 (user E1 2) and user card in second slot will occupy cross group 8 (user E1 4),
user card in the third slot cannot have single cross group. For device version after REV.B.00, user
card in first slot will occupy cross group 6 (user E1 2) and user card in second slot will occupy cross
group 7 (user E1 3), user card in the third slot will occupy cross group 8 (user E1 4).
Limitation for main cross group (user E1 1): when use main cross group to transfer data the number
of channels will not same for different slots. Channel number range for the first slot is 0-31, 0
indicates that shutdown the transmission of this user card, and the beginning channel is channel 1. If
other slots have already occupied the channels of main cross group there will alarms. Channel
number range for second slot is 0-23, 0 indicates that shutdown the transmission of this user card,
and the startup channel is channel 9. If other slots have already occupied the channels of main cross
group there will alarms. Channel number range for the third slot is 0-15, 0 indicates that shutdown
the transmission of this user card, and the beginning channel is channel 17.
Limitation for single cross group: Channel number range is 0-31; the beginning channel is channel 1
and there will not be channel occupation collision alarms.
Point-to-point communication can be realized by automatic channel distribution, and we recommend
