IBM PRO/100 SP manual RBS Links Rate Hit kbit/s

S38=3 34 kbit/s

S38=4 36 kbit/s

S38=5 38 kbit/s

S38=6 40 kbit/s

S38=7 42 kbit/s

S38=8 44 kbit/s

S38=9 46 kbit/s

S38=10 48 kbit/s

S38=11 50 kbit/s

S38=12 52 kbit/s

S38=13 54 kbit/s

S38=14 56 kbit/s

The number of robbed-bit signaling (RBS) frames detected decreases the true DCE rate per the following table:

Table 6: Effect of RBS Frames on DCE Rate

RBS Links	Rate Hit (kbit/s)
0	0
1	2
2	4
3	4
4	6
5	8
6	8

For example, if S38=10 and there are 3 RBS links, the K56flex downstream rate will be 48-4=44 kbit/s. The exception to this is for 32 kbit/s and 34 kbit/s, which are the true rates regardless of the number of RBS frames detected.

Appendix B. Modem function B-13