Jeff Barnhart ([log in to unmask]) wrote: : Is there any way to increase the type ahead buffer space? Assuming you are using a DTC connection, you are limited to a fixed 256 byte buffer with a DTC48. Once this limit is reached (that is, no read has been posted from the host), the DTC will send an XOFF. If you need more than 256 bytes, I suggest you consider the new DTC models - dtc16mx, dtc16ix or dtc72 as in this case all a port's rx buffer (typically more than 1Kbyte) is available for TA data. However, in either case the TA buffer size is not configurable. Hope this helps. Gerald Cussen HP UK Response Centre