A few of you may remember that Telstra's ISDN modem NT1 Plus II proved to be incompatible with MacOS 10.4.2. The only solutions available were to either buy a router or regress to 10.4.1. I chose the latter.

However, I have just now successfully connected the NT1 Plus II using MacOS 10.4.3. These are the steps I followed:

1. Disconnect the modem USB cable.
2. Delete the NT1 Network Port configuration.
3. Trash the NT1 drivers from the Library>Modem Scripts.
4. Repair permissions.
5. Upgrade to MacOS 10.4.2.
6. Upgrade to MacOS 10.4.3.
7. Repair permissions (extensive repairs noted).
8. Retrieve NT1 drivers from Trash and drag them to the Modem Script folder.
9. Reconnect the NT1's USB cable.
10. Open Network Preferences and configure the NT1 Port.
11. Connect

Triffic!

Thanks to Karl Texler, Martin Daniell and Apple. No thanks at all to Telstra.

Vlad