The 868 single pair LRE kit works fine in the lab for the out of the box test, but when I placed them in the field all I get is a flashing VDSL light
The Enable-IT 868 single pair PoE & Extended PoE Kits have a distance restriction of 1,200ft or 366m over 3-pair of Category 3 up to 4-pair Category 5e / CAT6 wiring from your LAN and power source to the remote PoE device. Therefore quick, simple site surveys and installation planning are highly recommended – This is ideal for installing PoE IP Security cameras or PoE WiFi Access Points.
If you are using telephone wiring, make sure there are no telephone punchdown blocks on the wire. If there are telephone punchdown blocks connecting the wire between the 868 single pair VDSL (RJ-11) ports, remove the wire from the blocks and use Telco butt clips (jelly bean connectors) to bridge the wire together.
Telco punch down blocks add interference and can introduce other electrical paths that will degrade performance or interfere with the data signal communications. The 1-pair or wire used should be terminated directly into a RJ-11 Telco jack and inserted into the VDSL port of each 868 single pair unit. Also the signal on telephone wiring will only run approx. 3,000ft and 6,000ft on CAT-5e or better.
If using telephone wire and experience performance or connectivity issues, you can try to improve the signal by attaching a segment (25 – 50ft) of twisted pair (1-pair) to each end of the telephone wire before it goes into the VDSL port of each 868 single pair PoE unit. the Twisted pair will amplify the signal.
Be aware of other high speed communications ruining over the same CAT5e, 25, 50 or 100 pair of Telco cabling as they may bleed over other wires and cause interference/noise on your 1-pair of wiring between the PoE Extenders. Twisted pair wire (CAT5, CAT6, CAT3) will always give better performance than telephone wire.
We highly recommend a quick test to ensure the working order of your 868 Single Pair units.
To do this, please use one of the PoE patch cords provided and attach to the 868 single pair Interlink port of each 868 single pair unit. Power up the 868 single pair CO Unit and attach the 350 PoE Injector (P+Data Out port) to the 868 single pair CO LAN/PoE port. After a few seconds you should see a solid Green Interlink Sync LED on each unit. This confirms basic proper operation of the units.
LED indicators will provide visual operational status of the 868 Single Pair units
Interlink Sync – Solid Green LED indicates that the 868 single pair units see each other.
Unit Pwr – Solid Green LED indicates that both units are receiving 5v power.
Unit Mode – Solid Yellow LED on CPE unit only – No LED lit on CO LAN ACT – Yellow LED – Lit solid indicates the presence of local LAN – Blinking indicates the presence of local LAN traffic
VDSL ( Solid) – Indicates the 868 single pair units see each other and have synced up.
If this LED fails to light Solidly, the wiring between the CO and CPE is incorrect, the wiring may have a short, too many paths (connections) or the distance between the units exceeds the specs for your type of wiring.
LNK/ACT – Indicates local LAN is visible and connected with activity.
CPE – Indicates the visibility of the CPE unit from the CO unit.
CO – Indicates the visibility of the CO unit from the CPE unit.
PWR – should be lit when 5v adapter is connected and powered.
100 – Indicates the presence of a 100Mbps LAN connection on the local side.
Can we use Telco wiring between our PoE Extender units, like 25-Pair or 100-Pair?
Yes, Telco wiring can be used between our PoE Extender units. Any wiring used has to be as contiguous as possible with no other connections like a Telco punch down block or extensions.
Telco punch down blocks add interference and can introduce other electrical paths that will degrade performance or interfere with the data signal communications. The 1-pair or wire used should be terminated directly into a RJ-11 Telco or RJ-45 LAN jack and inserted into the LINE port of each 868 unit.
If using Telco wire over 300ft, add a piece of twisted pair wiring to each end of the wire connection to the PoE Extender. This will boost the signal strength and increase your performance.
Be aware of other high speed communications ruining over the same CAT5e, 25, 50 or 100 pair of Telco cabling as they may bleed over other wires and cause interference/noise on your 1-pair of wiring between the PoE Extenders.
Twisted pair wire (CAT5, CAT6, CAT3) will always give better performance than telephone wire.
Are existing Telcom circuits suitable to use between the PoE Extender units?
Typically No – Telcom circuits are just that – circuits (loops and many connections through Telco punchdown blocks) and not direct pair of wires without any connecting points.
Telco circuits frequently have other high frequency communications running nearby on on other pairs that interfere with PoE Extender equipment and signals.
I have a flashing VDSL lights on each 868 single pair unit and solid LAN lights, but network works but slow.
The flashing VDSL, is an indication of interference on the wire between the 868 single pair units.
Check your cabling and connections. The 1-pair wire run between the 868 single pair VDSL (RJ-11) ports should be a straight through, continuous run with no breaks or connections. If you are using telephone wiring, make sure there are no telephone punchdown blocks on the wire. If there are telephone punchdown blocks connecting the wire between the 868 single pair VDSL ports, remove the wire from the blocks and use Telco butt clips (jelly bean connectors) to bridge the wire together.
Also the signal on telephone wiring will only run approx. 3,000ft and 6,000ft on CAT-5e or better.
If using telephone wire and experience performance or connectivity issues, you can try to improve the signal by attaching a segment (25 – 50ft) of twisted pair (1-pair) to each end of the telephone wire before it goes into the VDSL (RJ-11) port of each 868 single pair unit. the Twisted pair will amplify the signal.
On the 868 single pair CO unit, you can change the DIP-2 and DIP-4 switch to the off position (default is ON)
This will increase the Signal Noise Ratio higher more tolerant and change the performance for better quality on your short distance.
Leave the CPE end alone as far as DIP switches.
What is the difference between the CO and CPE labeled units? And where do they go?
The CO / CPE designation are Telco Carrier terms –
CO – Central Office Equipment
CPE – Customer Premise Equipment
Our PoE Extenders are labeled with this CO/CPE identification primarily for our stock packaging and RMA repair. COs will only talk to CPEs.
The placement of the units are interchangeable and irrelevant to their operation or performance.
What does a flashing ACT light mean?
A Flashing or Blinking ACT (Activity) light denotes the presence of Local LAN traffic or activity. It does not necessarily confirm the transmission of data between remote ends of an PoE Extender.
What do the CO and CPE labels mean?
The designation of CO and CPE labels are a Telco industry terminology – CO (Central Office) & CPE (Customer Premise Equipment).
We use the designations for shipping, RMA repair only as they have no bearing on placement/performance for our PoE Extenders. Typically you would place the CPE at the remote end and the CO at the local end for reference only.
Customers that order several pairs of like PoE Extenders and mix up the pairs will need to know that only CPE’s talk to CO’s. Like units CO to CO and CPE to CPE will not sync as the programming is different on each.
How do I connect two routers together with an PoE Extender?
Routers or switches can be connected together easily as all our PoE Extender kits are transparent to the LAN.
You first need to figure out how the routers/switches will talk to each other on respective ports. Some routers such as Linksys, D-Link, Netgear have a WAN port.
Typically one router will be setup as a master router offering DHCP IP addressing to clients. Make sure the second router or others are not offering DHCP as well.
To attach an PoE Extender kit, on the second router, you may need a PoE Cross-Over cable in order to make a physical link. See example below.
SAT ——- Linksys A —–868 single pair ========================= 868 single pair—–Linksys B——–LAN
1) Figure out how Linksys to Linksys works (What ports will connect to bridge) On Linksys A the SAT internet has to be in the WAN port.
Linksys B needs to have it’s WAN port connected to a LAN port of Linksys A (The 868 single pair kit is transparent, therefore you will need to see what patch cord will work to get an 868 single pair to connect to the Linksys B WAN port correctly) – you may need a crossover cable to make it work properly.
2) Leave the 868 single pair connected to Linksys A LAN port on a standard PoE patch cord.
SAT ——- Linksys A —–868 single pair ========================= 868 single pair—–Linksys B——–LAN
WAN port LAN port WAN port LAN port
(patch cord) (patch cord) (XXXX cord) (patch cord)
XXX= Crossover cable
Is the data bath between two extenders electrically isolated from the power supply? If not is it possible to provide isolation to say 400VDC?
The 895 / 890 /820 the no the data path cannot be isolated for the internal power components. 400VDC will jump through the tightly designed components inside and damage all the chips.
On the 868 single pair / 868 single pair units, we do have built in lightning protection, however a load of 400VDC will burn out this protection and render the unit interoperable.
All the Extender Kits are designed for 5v 2W AC and if you need to power these via DC power you can purchase aftermarket 5v 2W DC adapters 2.1mm center power head.
Is there a way to run multiple PoE Extender Kits on the same wiring, say on the same CAT5e wiring or on a 25-pair Telco wire run?
PoE Extenders communicate on very high frequencies and therefore by nature these frequencies bleed over into surrounding wires. We highly recommend you do not place multiple extender kits or use on lines that have other high frequency signals (such as Digital PBX or other telecommunication circuits from a carrier) on the same wire or surrounding wires. Always uses separate runs(wiring) for PoE extender kits as to maximize the throughput. You may be successful in isolating different pairs in a 25,50 or 100 pair Telco bundle, however this is up to your own trial and error.