TouchToneTommy
Vendor
You can access system programming from a 4424LD+ connected to one of the 1st 5 ports.
Are you sure you are plugged into the same line port as before? There is a 5th jack for PFT, did you accidentally plug into that, instead of the correct line jack?
Find out what the paging button on the phones is dialing - go to a phone, press SPKR, #00, then press the paging button. You should see something like "pickup L804" - that will tell you which line jack you should be using.
Are you sure you are plugged into the same line port as before? There is a 5th jack for PFT, did you accidentally plug into that, instead of the correct line jack?
Find out what the paging button on the phones is dialing - go to a phone, press SPKR, #00, then press the paging button. You should see something like "pickup L804" - that will tell you which line jack you should be using.