biggles

As OBT said, dissconnect the line cord from th edigital set and plug in a SLT, if all wiring is correct you should be able to pull dial tone, if not check with a test but back at the champ tail end, the DHLC card is an 8 circuit card wired with a 25 pair champ tail in 3 pair modularity, 1st pair being the analogue SLT component and the second pair being the digital circuit(Pair 3 reserved-spare) if you can pull tone back at the system , it would point to a possible cabling issue. if you can pull tone and the port is not XDP'd it should ID as the same extension number at the digital set, if it is XDP'd it will have its own extension number. another possibility is that the flexible numbering system for the extensions have been altered and the extension number of the extension has been deleted, hope that helps.

sncsnc

HussainAkbar

I am afraid to test this on my own without being sure. If I fry the DHLC, my boss will fry my hide.

How are the 4-wires hooked up? The pair in the middle carry the analog voice while the outer two form a pair for the data?

Cnavarro

I'm wondering if you can really understand english. UNPLUG THE DIGITAL PHONE. PLUG IN THE ANALOG PHONE. DOES IT WORK?

I heard that if you say it louder, foreigners can understand it better

Carl

rivet

Now I know you think you understand what OBT is saying to you but take it from me you don’t.
1. Keep this in the back of your mind! There is not an XDP port on the Handset!! It is a DXDP digital extra device port.
2. How this works is dependent on the type of extension card it is connected to. If it is connected to a 16dlc a single pair of wires is used from your wiring frame system side to power the 7633 ext the handset itself creates a second ext and presents it at the DXD port to run a second 7633.
3. However if using a DHLC card the wiring on your wiring frame system side is different each port requires 3 pairs of wires to run. So in this case the first pair will run the analogue ext the second pair will run the 7633 handset and the third pair will run the digital extra device i.e. a second 7633.
4. these don’t actually require the handset in place to test because all 3 pairs need to be running at the (desk wall socket) if you unplug the handset from the wall and test the wall socket you would find
5. 16DLC (1 pair of wires with power)= digital ext
6. 8DHLC (3 pairs of wires with power) = digital ext, analogue ext, and extra digital extension
Final word unplug your handset plug your analogue handset into the wall do you have a dial tone
1. Yes ( then fault on cable between wall and handset)
2. No ( then fault in wire between system and frame or patch panel.

peter (www.novacomms.net)

OBT

Peter, the dxdp does not come down on a seperate pair, it runs off the back of the digital phone through the same pair on 3 and 6. on the back of the 7668 there is no analogue xdp, but on the 763x there is ( on Irish/UK units) a third bt port and also the analogue ext can come through the dxdp port on pins e 4 & 5

the third pair comes from the old 1232 days for voice announcement over speaker when user was on a call.

To be honest, this part is not rocket science. if you are still in trouble get a tech in, it wont cost any more than the time lost or a 8 dhlc card if you blow that one.

AbuSuhail

HussainAkbar
Did you enable XDP mode through system programming? as mentioned in the installation manual

HussainAkbar

Peter: Thanks for the details.

AbuSuhail: yes, I did.

Carl: Was that remark really called for?

I plugged an analog phone into the wall socket. Didn't work.

Then I tried plugging it into the jacks of other digital phones and their wall sockets. It does work there.

Hence, the whole problem is with my ext's wiring and not with the PBX.

rivet

no problem

peter (Telephone Systems Panasonic KXTDA Business sales service)