Hi, Whilst trying to get this Tecom phone working with Asterisk, it seems to be unable to login. Using the 'sip debug' command from the CLI does not produce any output even though the debug of the phone shows it trying to login every second or so? The phone seems to be based on a "Centrality PA1688" processor. Is there any other way I can see why this phone fails to login? I notice in /var/log/asterisk/messages I see a few errors: Nov 21 16:45:21 WARNING[10116]: sip_xmit of 0x8374b14 (len 464) to 192.168.1.10 returned -1: Invalid argument Nov 21 16:45:22 WARNING[10116]: sip_xmit of 0x8374b14 (len 464) to 192.168.1.10 returned -1: Invalid argument Nov 21 16:45:23 WARNING[10116]: sip_xmit of 0x8374b14 (len 464) to 192.168.1.10 returned -1: Invalid argument Nov 21 16:45:24 WARNING[10116]: Maximum retries exceeded on call 33dc108a2802ab4b217a80445a8f6309@192.168.1.2 for seqno 102 (Non-critical Request) Any clues MOST welcome! I'm starting to loose hair here! Mike