CYaBro: We use http://www.clickatell.com/index_b.php to send texts from our job management software.

Texts cost about $0.06 each.

I suspect that it will no longer work to Telecom numbers..

No suspect, it absolutely wont :)  The fact that Fishtext wont work is for the same reason as Clickatell wont either - Telecom blackholes their SMS messages (for those who weren't aware).