Kitz Forum
Broadband Related => Telephony Wiring + Equipment => Topic started by: Barnesy91 on April 11, 2016, 11:43:49 PM
-
Hi guys,
Used to have a pbx system installed, but have now moved to a much smaller office and don't require the full features of a pbx anymore.
I've ran 3 extensions from the nte faceplate (using a termination block)
My question is, can I use the pbx phones still? I've plugged them into the sockets, and theres no dial tone. I do however have dialtone in all 3 sockets using my normal analogue phone.
Do I have to use pin 3 for the bell wire to get dialtone? The phones were previously powered off the pbx system, and I dont have psu's for the phones (Have just ordered some) but didn't think i'd need a supply for them to have dialtone?
The connector is an rj11 on the end that goes into the phone, and a normal telephone connection on the other end going into extension socket.
Hope this makes sense
Thanks
-
Is there a switch on the base of the phone so you can switch from a pbx phone to a normal phone?
-
Hmm, Not that I noticed, will have a look tomorrow when I get in the office.
Is that a fairly common feature?
-
Welcome to the Kitz forum.
That is an interesting question . . . Thinking back to my experience, in a similar situation, from the early 1980s the answer was no, the PABX telephones did not operate on a standard PSTN line.
If you would post the make & model of the telephones and of the PABX to which they were connected, perhaps someone will be able to look up specific details.
-
My BT Vanguard phone has a 3 position switch with MFT, MFE and LD as the selection. It works on MFT. See http://www.britishtelephones.com/t4001.htm
-
Thank you for the replies, I will get the make and model tomorrow and post them up here, and hopefully somebody can help and also check if there's a switch to change them to normal phones.
Thanks again
-
However, I just checked and it gets a dialling tone in all 3 positions, it just doesn't dial. Perhaps it needs the PSU as you said.
-
The phones are bt 8528's. If anybody knows if I can use them or not, that would be great.
Thanka
-
I don't think you can. There's a warning not to in here https://btbusiness.custhelp.com/euf/assets/TelephoneSystems/BTQuantum/BTQ8528QRG.pdf?noIntercept/1
-
[Off Topic]
My BT Vanguard phone has a 3 position switch with MFT, MFE and LD as the selection. It works on MFT. See http://www.britishtelephones.com/t4001.htm
That three position switch just selects the calling mode and the method for exchange recall. (Note: exchange recall, not "re-dial" last number.)
MFT = Dual Tone MultiFrequency calling, with Timed break for exchange recall.
MFE = Dual Tone MultiFrequency calling, with Earth application to the B-wire for exchange recall.
LD = Loop Disconnect calling (at a nominal 10 pps).
[/Off Topic]
-
The phones are bt 8528's. If anybody knows if I can use them or not, that would be great.
As Dray has noted, it's a "no" :no:
WARNING: Do not connect directly to the public switched telephone network (PSTN).