Using the current IOP/IOA hardware async speeds of 1200, 2400, 4800, 9600, 14400, 19.2Kbps are supported. ISP support of 19.2Kbps is rare, so the most common highest denominator is 14400 bps. A 28.8Kbps (or faster) modem can be used, but the effective throughput is gated by the maximum DTE-to-DCE speed of 19.2Kbps. The AS/400 system uses hardware flow control to ensure that data over- and under-runs do not occur due to error re-transmission and data compression performed down at the modem level.
See AS/400 Advanced Series Handbook for unsupported combinations.
SLI030