I wonder whether anyone have used VoIP gateways from the following vendors:
1. Antek inc. (www.antek.com.tw)
2. Accel inc. (www.accel.com.tw)
3. Octtel inc. (www.octtel.com)
4. WellTech inc.
Please comment on their performance.
I am not sure that any gateway on your list supports RADIUS directly. I know Welltech supports RADIUS only via a “call manager” developed internally. Although all gateways you have listed are in-expensive compare to others.