I have a Gigaset 8825 purchased 7 years ago. It has worked fine. For Line 1, I used the telephone companies voice mail system and for Line 2, I used the message system in the 8825. The MWI light worked faithfully to indicate when I had a message waiting for me on the teleco's answering machine. It went off when all the messages were picked up.
Last week, I switched to ATT U-Verse. They use VoIP for the
telephone service. My message waiting indicator light remains on
whether there is a message on not. I had the cell phone number of the installer and I called him for help. He said that VoIP is different and to look to Siemens to see what to do about the MWI light. I have searched the various websites and can not find an answer or even a question addressing this problem. If anyone knows how to change this, please tell me how to make the MWI light on the 8825 work properly with VoIP. I appreciate your help! John J.
I have a fairly new Panasonic that can't seem to turn off the MWI indicator. My older Panasonic works fine. uVerse technical support says the newer Panasonic is incompatable with uVerse. They all worked fine on my former analog ATT line
There maybe different MWI options available in the phone's set up menu on the base unit. If so, see if the different options perform differently. Your phones are probably set to "FSK" (frequency shift keying) for MWI but IIRC, U-Verse uses the "Stutter" option. Also, in addition to talking to the installer, call ATT tech support. If the problem is in the signalling they may now have programming options on their end to resolve it.
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