LOEWE MultiTel-D » History » Version 3
manawyrm, 10/04/2023 10:07 PM
| 1 | 1 | manawyrm | h1. LOEWE MultiTel-D |
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| 3 | 3 | manawyrm | *Warning!* MultiTel-D devices contain a +Lithium backup battery+, which will leak catastrophically and "destroy the entire device":https://pbs.twimg.com/media/FN639CSUYAAw0fb.jpg:large. |
| 4 | 1 | manawyrm | The battery is contained on the SRAM module, which can be removed without tools by unclipping the top cover, removing the holding bracket and then just unplugging the module. |
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| 6 | 2 | manawyrm | {{thumbnail(IMG_8434.jpg)}} {{thumbnail(IMG_8438.jpg)}} |
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| 8 | 1 | manawyrm | h2. Information |
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| 10 | 2 | manawyrm | "Users Manual":https://osmocom.org/attachments/download/6958/MultiTel-D_20Bedienungsanleitung.pdf |
| 11 | "Service Manual":https://osmocom.org/attachments/download/6959/loewe_multitel-p.pdf (Schematics, PCB layout, Pinouts) |
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| 12 | 1 | manawyrm | |
| 13 | 2 | manawyrm | h2. Features |
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| 15 | - BTX/videotex terminal |
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| 16 | - 80-character ASCII terminal mode (with ANSI-sequence support) |
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| 17 | - external RS232 for faster modem, ISDN TA, direct PC connection |
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| 18 | - DB25/parallel port printer interface |
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| 19 | - black/white CRT |
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| 21 | h2. Battery replacement |
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| 23 | The SRAM backup battery (used for configuration, bookmarks, macro, etc. storage) can be replaced with a CR2032 coin cell battery. |
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| 25 | A Q&J CR2032-BS-6-1 holder (LCSC #C70377) seems to fit pretty well: |
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| 27 | {{thumbnail(IMG_8505 (1).JPG)}} {{thumbnail(IMG_8510.jpg)}} |
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| 29 | h2. External modem/ISDN TA interface |
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| 31 | RS232 (V.24) port on the back can be used to connect via modems with up to 9600 baud. |
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| 32 | An ISDN TA can also be used. ELSA MicroLink ISDN was used successfully: |
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| 34 | {{thumbnail(IMG_8522.jpg)}} {{thumbnail(IMG_8524.jpg)}} {{thumbnail(IMG_8529.jpg)}} |
