Hi All, I have a Linksys SPA-3000 [Hardware version 3.0.0(1178), Software version 3.1.10(GWd)], with both the FXO and FXS interfaces registering with asterisk via SIP seperatley. I also have a Cisco 7940 and 7960 using the sccp2 (chan_sccp) driver, and a couple of IAX softphones Both inbound and outbound calls to/from the FXO interface time out after around 17-20 minutes. With SIP debug turned on, it looks like the call was just ended "normally". This problem doesnt occur with IAX<->SCCP calls, just those via the SPA-3K FXO interface. Ive checked all the timeouts in the Linksys configuration, and set them all way higher than 17-20 minutes. I've tried with both G729, and uLaw CODECs, same thing. I've tried turning off silence detection, and the hangup detection is set correctly for the UK. Has anyone else had this happen, or any idea what the problem might be ? As you might imagine, its rather frustraiting to be half way thru a call, and it just hang up on you! All the Best Iain