I meant "suddenly" after I had been messing with the SNOM's settings. The firmware is 7.3.14. The SRTP stuff is: Symmetrical RTP: off RTP Encryption: on Dynamic G.726 payload: on SRTP Auth-tag: AES-32 RTP/SAVP: off Lars From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Brian West Sent: Thursday, October 29, 2009 4:37 PM To: freeswitch-users@lists.freeswitch.org Subject: Re: [Freeswitch-users] Error 488- Incompatible Destination No its not ALL of the sudden... Please check the SRTP settings on the identity. Thats why you're getting that... the phone defaults to sending crypto in AVP which is invalid... we reject it. This has been this way for some time I suspect you have updated your snom recently or aren't on 7.1.35 or higher which has the options to fix this on the phone. set it to SAVP RTP/SAVP: to off will fix it. Unless you're doing SRTP then set it to mandatory. /b On Oct 29, 2009, at 6:20 PM, Lars Zeb wrote: I must have been playing with the settings on a SNOM 320 because suddenly it cannot connect to FreeSwitch. I have looked at similar posts and it seems like it must be a codec problem on the SNOM, but I cannot figure it out. Can someone point me in the right direction? http://pastebin.freeswitch.org/10887 Thanks, Lars