Telephone desk set
Fernsprechtischapparat, abbreviated to FeTAp , was the name of the Deutsche Bundespost for their telephones in the period from 1961 to the 1980s. The abbreviation “FeWAp” was used for a telephone wall set, later exclusively “FeAp” for telephone set . Phones with special design were called "DFeAp" for design telephone set . Several telephones that consisted (almost) only of the handset were called "KFeAp" for compact telephones .
The devices also had a three-digit number, made up of the two-digit year of the market launch and an additional number.
Well-known models are the "FeTAp 611", "FeTAp 791" and the "FeTAp 751" push-button phones. These devices were a prime example of recyclability and repairability. Many components could be replaced in a short time without tools or only with a screwdriver . The color-pure plastic housings made of ABS were returned to the production cycle when they were returned. Compared to their predecessors, the devices were very robust . The Deutsche Bundespost has also introduced new junction boxes and junction boxes for the new generation of telephones .
FeTAp 61
The telephone desk apparatus 61 replaced the desk telephone W 48 in 1963 . It was completely redesigned - more compact, easier to handle and lighter than the Bakelite W 48 . No component came from earlier devices, speech and earpiece capsules, but number switches and rubber feet are interchangeable with those of the previous models. Its shape was reminiscent of the “Assistant” model designed by the company SEL ( Standard Elektrik Lorenz ) at the end of the 1950s , which had been developed purely for auxiliary units, but was unable to establish itself due to the fragility of the first plastics.
technology
The companies Siemens , SEL and Richard Bosse & Co were significantly involved in the construction of the FeTAp 61 . All housing parts and the handset were made of high-impact, thermoplastic ABS plastic and no longer made of the hard, but brittle and fragile Bakelite like its predecessor. The finger hole disc was made of transparent plastic. Initially, the finger perforated disk of the SEL telephone "Assistant" with a small paper insert was adopted, but after a short time a new version with a larger paper label and improved breaking strength made of styrene-acrylonitrile was installed. The number switches type NrS 61, a further development of the NS 38, were designed differently depending on the year of construction or the manufacturer, they differed, for example, in the process noise or the shape of the finger contact. Inside the device, the number switches were equipped with dust protection caps for the mechanics and mounted on rubber bearings to dampen the dialing noises.
All electrical components were soldered as a printed circuit onto a printed circuit board made of hard paper . The alarm clock - it was called "Einschalenwecker 61" - only had one bell ("alarm clock bowl"), its volume could be adjusted with a rotary knob on the underside of the device. There were also different versions here. Due to its design, the single-shell alarm clock no longer sounded as harmonious as its twin-shell predecessor in the W 48, but rather shrill. These higher frequencies were found to be particularly uncomfortable by the elderly. The circuitry of the FeTAp 61 differed only slightly from the W 48 . The back hearing loss had been improved by a somewhat more complex line simulation .
Models
The models of the first series, up to around 1968, have the designation FeTAp 611–1, followed by the FeTAp 611–2 series, modified in smaller details, for other equipment features the designations were 612-1, 612-2 or 611 GbAnz -3. This series received a tab in the cable compartment to accommodate a second earpiece, which was rarely used in practice. In addition, the base plate and the dimensions of the circuit board have been changed slightly: The circuit board of the 611-2 does not fit into the 611-1.
Initially, the FeTAp 61 was only produced in "pebble gray", hence the nickname "gray mouse". From 1970 the Deutsche Bundespost started a survey on colored telephones. Four colors were selected from 13 different colors and shades. In 1972, the colors ocher yellow, salmon red, light red orange and fern green were introduced in addition to the pebble gray version. The color salmon red was soon withdrawn from the range due to low demand. The connection cables of these colored models were kept in black - mainly for economic reasons - only the pebble-gray device kept its gray cables. Special colors were also produced in small numbers, such as dark red with black applications or black and light yellow. However, these were produced independently of the Bundespost for companies and institutions in very small editions, which is why such copies are extremely rare today. The same applies to the transparent 61-2, which was specially designed for exhibition purposes. In private households, covers offered by various manufacturers were sometimes used to make the phone appear more decorative. They were made of cardboard and covered with brocade fabric, one part was put over the phone, another part was put on the receiver.
In the case of the Deutsche Bundespost apparatus, one of the screws used to open the housing was sealed with a small plastic stopper, the so-called sealing disk. This enabled unauthorized interventions on the part of the participant to be recognized. At that time, the devices were rented by the participant and remained the property of Swiss Post.
The FeTAp 61 was produced by all well-known West German telephone manufacturers for the Deutsche Bundespost and also for private telephone systems (as "office devices") in a total of over 20 million units. In the Federal Republic of Germany it went hand in hand with the change of the telephone from a luxury object to a natural commodity - for many West Germans it was the first “own” telephone at home. In 1963 just 19% of West German households had a main line, in 1984 it was 88%. In 1970 50% of all participants had the new 61 model. The devices reconditioned by the Deutsche Bundespost were still connected to the participants until around 1988.
Among the many designs of the FeTAp 61 (over 250 in total) there was also a version as a wall-mounted device called FeWAp 61. Introduced in 1967, it replaced the wall-mounted device W 48 and the desk / wall-mounted device W 49 . There was also the FeTAp 611 GbAnz, a version with a built-in charge indicator, and the FeTAp 616D, the first model with a data button .
The FeTAp 61 models have become rare in the meantime (especially the salmon red version, which was built in smaller numbers), as many examples ended up in the scrap container. As rental devices, they remained the property of the Deutsche Bundespost and were therefore usually confiscated and disposed of when the connection was terminated or replaced with a newer model. They are now on their way to cult status - a section of over 20 years of West German telephone history. They are enjoying increasing popularity and are even being put back into operation.
FeTAp 71/73/75
Although the FeTAp 61 was still in production until the mid-1980s, there was a new standard device as early as the 1970s. The phones of the 7 series had a keypad and a double bell. Because the exchanges only supported pulse dialing (IWV) at that time, the only touch phone that was available was the “FeTAp 75”, which was linked to IWV. Initially, the new telephones were offered in the colors fern green, light red orange, beige and wine red and were delivered from November 1976.
In companies that use telephone systems , a "FeTAp 71" with multiple frequency dialing (MFV) or "FeTAp 73" with diode-earth method (DEV) could also be used, if supported by them . All of these models are identical, they only differ in the dialing method used, which depends solely on the keypad (TWB71, TWB73 or TWB75).
FeTAp 79
According to FeTAp 75, the German Federal Post Office was planning a new keypad; At the request of many customers, a rotary dial was used instead of the keypad . Otherwise this "FeTAp 79" is identical to the FeTAp 75. Since its introduction, the same circuit board has been used for all devices of the 7 series.
The 79 models were also available in the colors fern green, light red orange, beige and wine red. For the first time, devices in "red-marbled" and "green-marbled" were offered. These colors were only available on the FeTAp 79. It was otherwise no longer used. Hence, such phones are very rare. A new wall-mounted device called “FeWAp 79” was also offered; it was available in the colors fern green and beige.
Nomenclature of types 61, 7x and 8x
The device name consists of three digits. The first two digits identify the series, in the case of the 7 series the second digit designates the type of dialing device and the third digit the features of the telephone set.
| Digits | Device type |
|---|---|
| 61 | Apparatus with a number switch |
| 71 | Set with keypad for multi-frequency dialing |
| 72 | Telephone with number switch or keypad (pulse dialing or DTMF) |
| 73 | Apparatus with a keypad for diode-earth method |
| 75 | Set with a keypad for pulse dialing |
| 76 | Device with 16-key dial pad (DTMF, special keys A, B, C and D for operating procedures e.g. for GEDAN ) |
| 77 | Device with keypad (pulse dialing or MFV) and " speech kit " |
| 78 | Device with two keypad (IWV / DEV and MFV) for data transmission |
| 79 | Apparatus with a number switch |
| 80 | Device with 16-key dial pad (pulse dialing or DTMF, special keys A, B, C and D for operating procedures e.g. for GEDAN) |
| 85 | Set with a keypad for pulse dialing |
| 89 | Apparatus with a number switch |
| Digit | Basic equipment |
Earth button | Modified hook switch for A2 switching |
Indicator |
|---|---|---|---|---|
| 1 | × | |||
| 2 | × | × | ||
| 3 | × | × | ||
| 4th | × | × | × | |
| 5 | × | × | × | |
| 6th | × | × | × | × |
Other models
Since the early 1980s there has not only been the term “FeTAp”, but also “Tel” as an abbreviation for telephone. In addition to the standard telephones, the German Federal Post Office now also offered the designer telephones "DTel / DFeAp" and the compact telephones "KTel".
Many of the newly offered telephones were given a city name, for example “Oslo” or “Dallas” or the names of areas such as “Spessart” or “Rhön” in addition to the device name . The last phone with a name was "Stralsund" (Tel 01), released in 1992, which was also offered as a special "Barcelona" phone in Olympic white on the occasion of the Olympic Games .
Tel 01 LX
The "Tel 01 LX", published in 1989, is also known, it has a keypad with 16 keys, ringer and can be switched from pulse dialing to multi-frequency dialing . Like all postal systems before, this standard telephone was only available for rent. For at that time DM 2.90 per month and a one-off payment of DM 3.31 you got the device, optionally in the colors mint green, dark red, sand beige, ocean blue or coconut brown. The minimum rental period was 1 year from installation. The Tel 01 LX was built for the Deutsche Bundespost from 1989 to around 1993 . After that, various manufacturers, for example Heibl, produced the telephone under sometimes changed names (H1LX) as purchase devices.
The Biglari company (now trading under the name OOH-YA.COM GmbH ) in Bad Langensalza , Thuringia , sold (at least until 2014) the Tel 01 LX under the name "01 LX Tisch". It was visually indistinguishable from the original Tel 01 LX. The color palette was expanded for these models, however, Biglari offered the 01 LX in any RAL color . A new version of the 01 LX was produced from 2014, now under the model names 01 LX T (table version) and 01 LX W (wall version). Technically, the new development differed in the circuit board. The ringer melody and volume were programmed on the new devices using codes on the keypad. Accordingly, the lateral knurled wheel for volume adjustment was omitted. At the end of 2018, Telena Fernmelde- und Datentechnik Napparell GmbH & Co. KG from Schwetzingen will be offering the model in a table and wall version for registered customers.
DFeAp 322
Also known, but rare, is the "DFeAp 322" design telephone with the name Mickey Mouse from 1980, which was initially only available with a number switch and later with a keypad.
FeTAp 85 and FeTAp 89
Around 1982 the German Federal Post Office introduced the so-called “convenient telephone system” with telephones, FeTAp 85 and FeTAp 89 with the A3 additional device. These are designed for an A3 connection and have technology that enables up to four telephones to be operated on one exchange line . However, these devices were only supplied for connecting two additional microphone units . Both devices support pulse dialing (IWV).
The main telephone of this system, the "FeTAp 85" with keypad , is identical to the devices of the 7 series, has a keypad (TWB 75), a double bell and the same housing. The same applies to the "FeTAp 89" with a number switch , which is identical to the devices of the 79 series. The main difference to the devices of the 7 series is the connection cable with an ADoS 16 plug and the elaborately equipped circuit board for an A3 circuit. In contrast to the A2 circuit , the A3 circuit requires an external power pack whose cable is either connected to the main telephone or to the " junction box 16 ".
The devices of the "telephone-comfort-system" were manufactured by five companies, by Richard Bosse & Co , the Deutsche Fernsprecher GmbH (DFG), by Elmeg , Hagenuk and the Krone GmbH, where Bosse, Elmeg and Hagenuk had developed the motherboard together . The Bundespost offered the devices in the colors fern green, light red orange, beige and dark red with or without a lock . In 1987 the "FeTAp 96" followed with a number switch and the "FeTAp 97 / 97a" with a keypad.
The "convenient telephone system" is a special form of a can system , one or more ADo 16, ADo 8 and VDo 4 and VDo 7 were used to set it up.
FeTAp 89-3 for A3 connection with "ADoS 16" connector
An open FeTAp 85
An "ADoS 16" (TAE 16) plug
Connection instructions of the DBP for FeTAp 85 and FeTAp 89
Special telephones
FeTAp 832 telephone desk set with built-in parallel modem , 1983
DFeAp 321 for the visually impaired
Circuit diagrams
Fe (T) Ap 611
literature
- Handbook of telecommunications technology , Volume 6: Telephone sets - Telephone interference suppression - Private branch exchanges . (PDF; 9.1 MB) p. 18 ff.
- Operating instructions for the desk phone 01 LX T (PDF; 1.7 MB)
Web links
Individual evidence
- ↑ Karl-Heinz Schmidt (Ed.): Terminals on the analog telecommunications network . R. v. Deckers's Verlag, Heidelberg 1992, ISBN 3-7685-4889-9 , p. 78
- ↑ Brocade Hoods. christians-telefone.de, accessed on November 6, 2017 .
- ↑ No more funny: FeAp 61 "The gray mouse". (No longer available online.) S-Storbeck.de, archived from the original on May 21, 2012 ; accessed on November 6, 2017 .
- ↑ Anniversary: 35 years ago the first pushbutton telephone came onto the market. teltarif.de Onlineverlag, November 15, 2011, accessed on November 16, 2013 .
- ↑ a b c d e Deutsche Bundespost: Handbook for suppressors , 3/1993
- ↑ The company OOH-YA.COM GmbH - OOH-YA.com. Accessed December 31, 2018 .
- ↑ 01 LX table sand beige . Biglari website. Retrieved January 24, 2014
- ↑ FeTAp and FeWAp 01LX. www.telena.de, accessed on December 31, 2018 .