Wvdial worked immediately to connect to Optus.
I did precede the telephone number, username and password in a "Dialer Optus" section of /etc/wvdial.conf with "Stupid mode = yes". Whether that was necessary or not, I don't know.
My thanks again to those who replied to my earlier question.
Leslie
____
Visit http://stumblng.tumblr.com
An Australian lawyer's tumblelog about things (some legal, most not) you might otherwise have missed
-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
