CTC Union SHDTU03, Руководство пользователя

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Chapter 5. Configure via Console Port
5-19
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Command: setup e1 frame
<FAS|FAS+CRC4|FAS+CAS|FAS+CRC4+CAS|UNFRAMED>
Message: Please input the following information.
SHDSL E1 frame (TAB Select) <fas+crc4+cas>: unframed
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FAS Frame Alignment Signal use 7-bit patterns to establish
and maintain frame synchronization. The FAS word is
located in timeslot 0 of frame. In FAS mode there are
1~31 timeslot available for use data.
FAS
0 1 2 3 4 5 6 7
8 31
Time Slot
64k 64k 64k 64k 64k 64k 64k 64k 64k 64k 1408k
9 ~ 30
Maximun Data Rate 1948kbps
CAS Also known as time slot 16 multiframing. It requires a
multiframe alignment signal to be present for frame
sync. The Multiframe Alignment Signal (MFAS) is
inserted into the 16th timeslot of frame 0 of the 16-
frame multiframe.
In CAS mode, there are 30 channels available for user
data. If timeslot 16 is included in the unit’s mapping, it
will be disregarded.
FAS
0 1 2 3 4 16
31
Time Slot
64k 64k 64k 64k 64k 64k 64k 896k
17 ~ 30
CAS
5 ~ 15
704k
Data Rate (x) 960kbps Data Rate (y) 960kbps
Maximun Data Rate = x + y = 1920kbps