|
|
Joined: Mar 2006
Posts: 3
Member
|
OP
Member
Joined: Mar 2006
Posts: 3 |
It's never as easy as you hope. Summed up, I'll need to generate a DC and a AC signal. A few measurements would need to be performed. Hal you're correct, it's in part 68. Here's a quote for those interested. Thanks for your help guys.
In order to determine the REN, for North America, four different calculations are used: • 25MΩ divided by the minimum measured on-hook DC resistance for an applied voltage of up to 100 volts. • 150KΩ divided by the minimum measured on-hook DC resistance for applied voltage of up to 200 volts. • 0.6mA divided into the maximum DC current drawn during the AC on-hook impedance test. • 8KΩ divided by the minimum AC impedance measured while performing the AC on-hook impedance test (for "B" type ringer). The largest of these four numbers is listed on the label as the REN of the device. If the AC impedance yields the highest REN (as it usually does), it is followed by a letter corresponding to the type of ring signal applied during testing. For example, if the highest REN calculated was 0.8, and the device was tested as a B type ringer, the REN would be 0.8B.
|
|
|
Visit Atcom to get started with your new business VoIP phone system ASAP
Turn up is quick, painless, and can often be done same day.
Let us show you how to do VoIP right, resulting in crystal clear call quality and easy-to-use features that make everyone happy!
Proudly serving Canada from coast to coast.
|
|
Forums84
Topics94,298
Posts638,870
Members49,769
|
Most Online5,661 May 23rd, 2018
|
|
2 members (Yoda, hbiss),
126
guests, and
330
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
|
|
|