The most economical single port FXO offering that we have is our A4A card with one X100M module. I strongly recommend the hardware-based echo cancellation for it, the VPM32M, an option the A4A base card.
Hi I’m experiencing a similar problem. The x100p SE is still being sold and posted out to customers ordering from x100p.com - their site still claims this card works with Asterisk. Yet their customer support doesn’t reply when you email them…
I’ve opened a bug up here but still waiting for help: