HUM When recording from a external call, we get only a strong hum (like a 60 Hz one). If recording from the headset, it works fine. What is the probable problem? PY1LL

DSL line. Possible that filters are not plugged in. When DSL service is being used on your line, filters must be installed at every jack that is in use. The DSL signal can cause static/noise, squealing (similar to fax tones) and other issues on your line. (ex. Caller ID problems). In order to avoid having this issue, the service provider gives DSL filters to all customers when they sign up for service. These microfilters must be used because they allow your phones to work properly by blocking the high frequency DSL signals from being transmitted through the telephones. DSL filters should be plugged into EVERY phone jack that has a phone. If you are not using the filters provided by the telephone company, this will cause static/noise and possibly Caller ID issues on your phones that are plugged into jacks without filters. Please contact your service provider for filter information and proper installation. Interference: Other 2.4 GHz products. Other products that use the 2.4 GHz band can interfere with the use of this phone. Items include: Radio towers, pager towers, cell phones, other 2.4GHz cordless phones and 2.4 GHz intercoms or monitors. If any of these items are in the area, they can interfere with the performance of this phone; try relocating the phone. Other 5.8 GHz products. Other products that use the 5.8 GHz band such as home networking (wireless modems) other 5.8 GHz cordless products (phones etc.) can interfere with the use of this phone. Try relocating the phone. Interference from microwave. Microwaves work on the same frequencies as the 2.4 GHz phones. If the unit is on when the microwave is running, it is normal to experience static at that time. Do not plug this phone in the same outlet or near the microwave. Environmental. Normal radio operation. There may be places within your environment that a cordless phone will not work well. If the problem only occurs in certain areas of your environment, there is nothing wrong with the phone. Try channing channels. Surge protector or modem. Unplug modem or surge protector that is connected to the unit. Building structure limits range. Relocate telephone base near window when using telephone outside. Base unit located in basement or other low area. Relocate telephone base to higher location. The unit will get better reception if it is not located in a low area. Video displays, television sets and personal computers may cause interference. Video displays, television sets and personal computers can cause interference on this phone. Please relocate the phone to an AC outlet were there is no major appliance plugged in. If the base is near any of the above mentioned, locate the base to another room. Possible telephone line/service problem. Try using your equipment at a different location (i.e. friend or neighbors). If the unit functions properly in the new location, contact your local telephone company for assistance; additional charges to be incurred by customer may apply.