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TC12 General Handbook

666/HB/43100/000 Page 5-10 Issue 9

Table 7 - OTUS PER LINE (300 BAUD HALF DUPLEX)

No of Control Bytes

No of Reply Bytes 0 1 2 3

0 5 4 3 3

1 4 3 3 2

2 3 3 2 2

3 3 2 2 2

4 2 2 2 2

5 2 2 2 2

6 2 2 2 1

7 2 2 1 1

8 2 1 1 1

9 1 1 1 1

10 1 1 1 1

11 1 1 1 1

12 1 1 1 1

13 1 1 1 1

14 1 1 1 1

Note :-

This assumes that all OTUs on a modem circuit send and receive exactly the same

number of control and reply bytes. In practice each OTU will be configured separately,

and the number of control and reply bytes is likely to vary from OTU to OTU.

Note :-

Only two control bytes are available for use on the Freestanding OTU.

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 38 39

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