#SER2D - Hard Wire Exclusion Privacy Device
- Easiest Way to Share a Phone Line
- Prevents interruptions by connected devices
Warranty & Terms
- 1 Year Warranty
- 30-Day Money Back Guarantee
- See Full Warranty / Ordering Terms
Hard Wire Exclusion Privacy Device
If you want to share a phone line, this is the easiest way!
The Exclusion/Privacy Device is for sharing lines between phones, modems, credit card machines, fax machines, etc.
Keep in mind that this device will let you share phone lines for both incoming and outgoing calls, but they have no way of routing incoming calls. That means that only one of the devices should be allowed to automatically answer the line!
We get lots of calls from people wanting Line In-Use indicators, so they know when the modem or phone is in-use, and they don't interrupt the call when making an outbound call. The Exclusion/Privacy Adapter will do it automatically.
We also get calls from people who want A/B Switches, to manually switch a line between two or more phones. The Exclusion/Privacy Adapter will do it automatically for outbound calls.
NOTE: These devices work on the Voltage Drop principal! A standard phone line has 48VDC (or so) of talk battery, which drops to 6 - 15VDC when a phone is taken off hook. The Privacy Devices are placed in front of each phone or modem and know that the line is busy (off-hook) if the voltage drops below a threshold of 24VDC. If the talk battery is below 24V, the device won't conduct electricity, so the phone won't be able to pick up the line. Because of that, you can't use the regular Privacy Devices on Key System or PBX stations that have 24V talk battery.
You can't use these on very long cable runs because the voltage doesn't drop much on the other run when you go off hook. If the voltage doesn't drop below the threshold of the Privacy Device, the Privacy Device won't exclude.
Keep these facts in mind when using these:
- They must be put in front of each device that you want to be excluded from the line when it is busy (you can't just put it in front of the phone you don't want interrupted).
- You can't put two of these in-series!
- Some Credit Card Terminals (and other devices) already have these built-in, so if you can't use a Privacy Device on these terminals (can't put two in-series).
- The telephones or other devices have to be within a couple of hundred feet of one another. They generally won't work between buildings.
- These will only work on phone lines with ~48 Volt talk battery.
White/Blue in and White/Blue out.
Put one in-series with the pair going to each phone.
Put one on the pair to each phone or device. Put it at the NI, the frame, on a 66 block, at the jack, or even inside the phone (not a good idea since you can lose track of it if you need to replace the phone).
One side of the Hardwire Privacy Device is punched down on the 66 block, and the station cable (or jumper wire) is 'beanied' to the other end. Includes beanies.