The phones in the this section are all 1-line, analog telephones. This means they could be plugged into an ordinary residential or small business phone jack They may also be used on a business telephone system IF the system has analog extension ports. These phones will not work when plugged into proprietary digital extensions of business phone systems and may even cause damage to the system or to themselves if they are plugged into a digital-only extension. Customer is solely responsible for determining whether their phone system works with analog products.
Please note that the use of the phrase "digital extensions" here does not refer to internet phone services that provide an analog jack for telephone connection; it refers only to systems where the phone jack is producing a digital, rather than analog signal. If in doubt, please check with your system administrator or call THE PHONE SOURCE.
1-line office phones
OFFICE PHONES 
VoIP PRODUCTS 
