Hi - We've got multiple offices with their own asterisk boxes (CVS HEAD 11/03/04-14:59:37) connecting to each other using IAX forwards. All users are on SIP phones. Voicemail is centralized to one location. Everything is hunky dory except that the users in the remote offices don't get MWI on their phones. I've seen the other posts to this list regarding this, and I've been trying to adapt the SER -> Asterisk script that was posted here (uses sipsak): http://lists.digium.com/pipermail/asterisk-users/2005-February/ 087929.html I'm pretty much running the script unmodified, just with my info plugged in. The trouble is I can't seem to get the boxes on the remote ends to accept the NOTIFY messages. They just spit back this: Mar 25 16:51:39 WARNING[5648]: chan_sip.c:2416 find_call: Call missing call ID from 'xxx.xxx.xxx.xxx' I have Call ID specified in the SIP messages I'm sending like this: Call-ID: 1234567890@!IP! (this is unmodified from the script) I've tried all sorts of combinations here, but I haven't come up with one that my * servers will accept/recognize. Do I need to set up a pre-registered sip peer to/from each box to allow these notify messages (shouldn't the phone registrations work for this)? Has anybody gotten this script (or any other) to work for remote MWI? Better yet, does anybody know a better way to do MWI over an IAX forward? Thanks, Noah