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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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28th Oct 2020, 7:04 pm | #1 |
Triode
Join Date: Oct 2020
Location: Aberystwyth, Ceredigion, Wales, UK.
Posts: 18
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A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
Evening All,
As the thread title suggests, I recently purchased a LiGo Bluewave Bluetooth Gateway which I intend to use with a recently-purchased GPO 746. In my ignorance, however, I am struggling to work out how the two are able to connect. It appears that the 746 requires four wires going into it from the BT plug but the RJ11 Cable included with the LiGo device only outputs two wires. I've just been looking at a wiring diagram for the 746 but I can't say that it helps me much. Any help would be greatly appreciated, and I once again apologise for my ignorance here. - Dan |
29th Oct 2020, 1:10 am | #2 |
Dekatron
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,724
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
Hi Dan and welcome.
So the 746 has been "converted" to use a modern BT plug? And there was a linecord with an RJ11 on each end included with the LiGo? Have you got a spare broadband microfilter lying around? You can use it as an adapter to connect the phone to the LiGo like this, The filter also contains a ringing capacitor, simulating a master socket, so the phone should ring on incoming calls. Mine a different gateway device but the principle is the same. You will not be able to dial outgoing calls on that phone as things stand, because it's most unlikely the Ligo will support pulse dialling. There are ways around this, but one thing at a time. <<Edit>>, seems I may be wrong about that last point, I've just seen reviews saying they have used rotary dial phones with success, I must say I am both surprised and impressed. £22.98 including shipping, not bad.
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-- Graham. G3ZVT Last edited by Graham G3ZVT; 29th Oct 2020 at 1:30 am. |
29th Oct 2020, 3:25 am | #3 | |||||
Triode
Join Date: Oct 2020
Location: Aberystwyth, Ceredigion, Wales, UK.
Posts: 18
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
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29th Oct 2020, 9:27 am | #4 |
Dekatron
Join Date: Feb 2005
Location: West Cumbria (CA13), UK
Posts: 6,130
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
It may be just a case of them covering their backsides, but I do notice the sentence "Please note that some older corded and cordless phones may not be able to make outgoing calls through the Bluewave." in the product description.
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Mending is better than Ending (cf Brave New World by Aldous Huxley) |
29th Oct 2020, 4:12 pm | #5 | |
Heptode
Join Date: Jul 2007
Location: Flintshire, UK.
Posts: 707
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
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From memory, the X-Link worked with pulse dialling telephones. I have an X-Link somewhere but not used it for many years. I worked with X-Link in the early days of the unit on adding the UK tones and cadences not long after it came out twelve to 15 years ago. Up until then it only had the US ones. They then added various countries with a bit of 'pushing'. If you look carefully in the Ligo info you'll come across reference to downloading firmware from the X-Link website. I bought a few Ligo boxes when they were first reduced but not got around playing with the yet. Mine came as a 'GB' version with GB PSU - not sure about the cords but I believe now you get the 'EU' version. Something else to play with while we are locked down. They are good way of using up a unused 'free' minutes on your mobile from extensions on a phone system. |
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29th Oct 2020, 4:25 pm | #6 |
Dekatron
Join Date: May 2010
Location: Greater Manchester, UK.
Posts: 18,724
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
There are two types
This one has a built in ringing capacitor like a master socket https://www.amazon.co.uk/RJ11-Teleph.../dp/B000Q4X9PS but most don't https://www.amazon.co.uk/Rhinocables...ET538WPRAZVEN6 If your phone doesn't ring you can make a small modification to the internal wiring to use the internal capacitor in the phone.
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29th Oct 2020, 4:32 pm | #7 | |
Triode
Join Date: Oct 2020
Location: Aberystwyth, Ceredigion, Wales, UK.
Posts: 18
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
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As for adaptors I ordered the first one in Rambo1152's post so that's useful! |
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29th Oct 2020, 7:21 pm | #8 | |
Octode
Join Date: Aug 2005
Location: Saltburn-East, Cleveland, UK.
Posts: 1,786
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
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Strap T8 - T9 Strap T4 - T5 - T6 - T7 Strap T16 - T17 - T18 - T19 Some straps may already be present in the above positions, you also need to ensure that there is an internal capacitor fitted in C1/2 position on the circuit board (some later phones didn't have these fitted.) Red of line cord to T8 White of line cord to T18 Park Green and Blue of line cord on one of spare Terminals T11, 12, 13, 14 or 15. Regards Andrew |
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29th Oct 2020, 9:09 pm | #9 |
Dekatron
Join Date: Jan 2005
Location: Oxford, UK.
Posts: 17,864
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
Very useful post Andrew.
Worth making “sticky” IMHO, mods. |
29th Oct 2020, 10:35 pm | #10 |
Triode
Join Date: Oct 2020
Location: Aberystwyth, Ceredigion, Wales, UK.
Posts: 18
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
I'm guessing that I won't be needing to make this alteration, given the adaptor I've ordered appears to have a ringing capacitor?
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30th Oct 2020, 4:13 pm | #11 |
Triode
Join Date: Oct 2020
Location: Aberystwyth, Ceredigion, Wales, UK.
Posts: 18
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Re: A GPO 746 and a liGo Bluewave; Struggling to get them to work together.
Adaptor arrived today, plugged it in, works a treat!
Now to get UK-Style ringing... |