
Telephones for hearing aid users at home - FAQ
I am having problems with my telephone not ringing, any suggestions?
There is a limit to the number of devices that you can connect to a single phone line. Each device (telephone, fax, computer modem, textphone, ringer, flasher etc.) has a ‘REN’ number on it somewhere; the sum of ALL connected devices must not exceed a REN total of 4. If this is likely to cause you a problem a REN amplifier unit is available, please see section 10 of our catalogue.
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