Double Current signalling

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M1ECY
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Double Current signalling

#1

Beitrag von M1ECY »

Probably a question for Fred, but very happy for anyone to comment.

Attached is a small section that describes how the UK telex system interprets the various states of the S and R wires on telex lines - this I think is important for UK "FSG" to work with I-Telex.

Sadly programming is well beyond my grasp - I am still developing a single to double current converter with Jeff, but would also still like to see a direct implementation within I-Telex.

What other areas of development are a problem from making this easy to solve?
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459724 SEAN G - Te Ka De FS200 - Working 24/7
666507 JONAB G - BT Cheetah 85 - Working sometimes
350470 Ersatz G - J-Term - Not Used
BT Cheetah 87 RIP.
Siemens T68d - Working - Not connected yet
778672 WSWHQ G - BT Super Cheetah - on 312526
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FredSonnenrein
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Re: Double Current signalling

#2

Beitrag von FredSonnenrein »

Hi Sean,
fine document, this helps a lot.
Questions: What's "S.L.C." and what's VF circuit?
Grüße,
Fred Sonnenrein, Braunschweig
i-Telex 952741 (Lo133), 531075 (Creed75), 8579924 (T100s), 792911 (T68d) oder 781272 (T100 75Baud)
Bei Besetzt bitte 531002 versuchen.
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M1ECY
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Beiträge: 316
Registriert: Fr 11. Aug 2017, 13:13
Wohnort: Hitchin Hertfordshire, UK
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Re: Double Current signalling

#3

Beitrag von M1ECY »

Hi Fred, VF is almost certainly Voice Frequency - this would apply to Telex circuits that work on conventional phone lines I think.

SLC - a very good question!

can you PM me your email address, and I can send you the full document - not for public eyes unfortunately
459724 SEAN G - Te Ka De FS200 - Working 24/7
666507 JONAB G - BT Cheetah 85 - Working sometimes
350470 Ersatz G - J-Term - Not Used
BT Cheetah 87 RIP.
Siemens T68d - Working - Not connected yet
778672 WSWHQ G - BT Super Cheetah - on 312526
Benutzeravatar

Topic author
M1ECY
Rank 10
Rank 10
Beiträge: 316
Registriert: Fr 11. Aug 2017, 13:13
Wohnort: Hitchin Hertfordshire, UK
Hauptanschluß: 459724

Re: Double Current signalling

#4

Beitrag von M1ECY »

SLC - Station Line Circuit. From my understanding this can be ignored for the purposes of I-Telex
459724 SEAN G - Te Ka De FS200 - Working 24/7
666507 JONAB G - BT Cheetah 85 - Working sometimes
350470 Ersatz G - J-Term - Not Used
BT Cheetah 87 RIP.
Siemens T68d - Working - Not connected yet
778672 WSWHQ G - BT Super Cheetah - on 312526
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