Add notes about RocketModem IV

From Lee:
| commit cf905ca6366ad2215e3e238295d95855ad7016a1
| Author: Lee Howard <faxguy@howardsilvan.com>
| Date:   Wed Apr 18 21:39:29 2007 +0000
|
|   Adding notes about RocketModem IV.

diff --git a/config/conexant-1.0 b/config/conexant-1.0
index 4035bf028ff72a1267742599063efe80aa58fdc2..d660c7e30726c30ce4ec94f8e599d6616702fa14 100644 (file)
--- a/config/conexant-1.0
+++ b/config/conexant-1.0
@@ -7,7 +7,7 @@
 # support "Class 1.0" which means that they have "adaptive receive"
 # (AT+FAR=1), but not V.34.
 #
-#    Comtrol RocketModem II/III
+#    Comtrol RocketModem II/III/IV
 #    MultiTech MT5600ZDX
 #    Zoltrix FMVSP56i3
 #
@@ -25,6 +25,11 @@ ModemType:           Class1.0        # use this to supply a hint
 ModemRate:             19200           # rate for DCE-DTE communication
 ModemFlowControl:      rtscts          # default
 #
+# With the RocketModem IV (and possibly III) you may need to use a much
+# higher ModemRate than 19200 because, apparently, it suffers from potential
+# buffer underrun problems.  Fortunately, it doesn't have buffer overflow
+# issues, and so using 115200 should work (both rtscts and xonxoff test good).
+#
 ModemNoFlowCmd:                AT&K0           # setup no flow control
 ModemHardFlowCmd:      AT&K3           # setup hardware flow control
 ModemSoftFlowCmd:      AT&K4           # setup software flow control