03-19-2007 02:20 AM
we have a problem with 7940 ip phone
whenever we power on "invalid application protocol" error comming on universal loader
And not a single key functioning
03-19-2007 08:26 AM
Connect to DHCP / TFTP server that has log.
Press # when powering, release, then press 1234567890*#.
Observe TFTP request and make sure the phone is getting all the requested files.
03-19-2007 02:49 PM
Hi I have seen that problem many times. It is kind of firmware problem I think.
There is solution for that problem. Read about boot up process from tftp and share the needed files for the phone.
I'm using the following:
1. OS79XX.TXT - whish contains only that in the brackets (P003-08-4-00)
2. XMLDefault.cnf.xml - you have to change the name of the firmware again inside
3. P003-08-4-00.sbn
4. P0S3-08-4-00.sb2
5. P0S3-08-4-00.loads
6. P003-08-4-00.bin
I think that is enough but you may need SEPDefault and SEPmac-address files.
Be careful with P00 and POS.
Good luck.
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