Thanks to everyone's forebearance, on and off the list, I've managed to edit the RedHat 6.0 chat file (/etc/ppp/ppp-on-dialer) init string. Be- cause there was some uncertainties, thought I'd pass along the conclusion. Just before the ATDT dialing command, I inserted a set of AT commands in double quotes as follows: ... 'OK-+++\c-OK' ATH0 \ TIMEOUT 30 \ OK "AT&F1&K0" \ OK ATDT$TELEPHONE \ ... The quotations are to prevent bash from seeing the ampersands in the command string, which otherwise would cause the string to hang. The underlying issue is whether AT%F1 and AT&K0 help my external Robotics 56Kb modem talk to my ISP's alien modem server. One one test so far, but it went well. Haines Brown