> I was wondering if anyone else has had this problem. I have purchused several Cisco 7940 and 7960 phones. Of the 5 phones so far I have run accross 2 that that give me malformed TFTP and refuse to upgrade to the latest version of SIP code -- 5.3. In fact some of the other phones also give malformed packets do this but they seem to work OK. The ones giving me the problem when looking in ethereal are misiing part of the filename to get it upgraded to SIP. > > I know why it does not work, but why are these malformed packets apearing. I also > tried to go to a windows based TFTP server (original was linux TFTP) with the same results. > > Any ideas anyone?
Without specific error codes, packet traces, etc, we can only guess. Some real options include: a) not all tftp servers are the same. Over about 15 years of experience, many tftp servers have an issue with the last packet and how to close the session. Might research the exact software you're using. b) the cisco phones seem to have an issue with the "comment" lines in the SIPDefault file (on the tftp server). Remove every one and test again. This seems to be highly dependent on the exact versions of SIP code implemented (in sequence) from v2.x upward. Some phones seem to have the problem while others don't. Since we don't know what version of code was in the phone when you received it, best guess is to boot to v2.x, then 3.x, then 4.x, then 5.x and I'll bet (at least a beer) the problem disappears. Why? don't know, but lots of similar comments on the list. _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
