Raisecom Technology Co., Ltd.
http://www.raisecom.com
- 12 -
0 1 1 0 1 13×64K=832K
0 1 1 1 0 14×64K=896K
0 1 1 1 1 15×64K=960K
1 0 0 0 0 16×64K=1024K
1 0 0 0 1 17×64K=1088K
1 0 0 1 0 18×64K=1152K
1 0 0 1 1 19×64K=1216K
1 0 1 0 0 20×64K=1280K
1 0 1 0 1 21×64K=1344K
1 0 1 1 0 22×64K=1408K
1 0 1 1 1 23×64K=1472K
1 1 0 0 0 24×64K=1536K
1 1 0 0 1 25×64K=1600K
1 1 0 1 0 26×64K=1664K
1 1 0 1 1 27×64K=1728K
1 1 1 0 0 28×64K=1792K
1 1 1 0 1 29×64K=1856K
1 1 1 1 0 30×64K=1920K
(Max
bandwidth
1)
1 1 1 1 1 31×64K=1984K
(Max
bandwidth
2)
In the above table, ‘1’ stands for OFF status of the switch, and ‘0’ stands for ON status. For
example, the binary code corresponding to 384kbps bandwidth is ‘00110’. Then, the switches shall
be set to ‘ON, ON, OFF, OFF, ON’. When doing this, users are advised to note down the binary
code corresponding to the required bandwidth, then refer to the above table for switch status.
‘Max bandwidth 1’ is the maximum bandwidth in PCM30.
‘Max bandwidth 2’ is the maximum bandwidth in PCM31.
3.2.2 The 6
th
Bit: V.35 Bandwidth Control Option
6
th
bit
Bandwidth Control Option
OFF Master
Control
ON Slave
Control
The following conditions shall be satisfied in order to realize the remote bandwidth control
function.
1.
RC801-30B-FV35 series modems are deployed point to point, and in pairs.
2.
There is no PCM equipment (i.e. DXC, MUX) that takes up the No. 0 timeslot in the link.
3.
Neither of the RC801-30B-FV35 at both sides shall be set to transparent mode (N is not 0).
When all the conditions are met, user can set Master Control at one site, and Slave Control at the
other site. The first 5 bits switches can be set to all OFF. After the link is established, the actual
bandwidth at Slave Control site is the same as the Master Control site. Please note that neither of
the both sites can be set to transparent mode (N=0).
This bit switch has nothing to do with the timing resource. Users can either set Master Control at
