Payphone

A pay phone (abbreviation of the German Federal Post Office: MünzFw ) - also known as pay phone coin or short - is a telephone which enables it after insertion of coins, to establish a phone connection.

General

In Germany, two different types of counterfeiters are commonly used:

• The public pay phone is available to the public, situated on streets and squares, as well as in the higher density of transport nodes such as railway stations and airports, see cell phone ( Germany )
• The private payphone ( in telecom jargon: Participants payphone ). Private payphones can be found for example in restaurants, factories, hotels and clubhouses. The units can be rented or purchased. The device is connected to a telephone line, for which the operator of the device has to pay connection and connection fees. The Münzeinnahmen available to the operator, see Club Phone.

Emergency numbers (110, 112) and freecall numbers ( 0800) can also be achieved without coin at all public pay phones.

Phone calls via Call -by-call dialing codes of other providers are not usually possible.

Payphones are prevalent in telephone booth ( TelH ) or telephone booth ( TelHb ) installed. In addition, Payphones of so-called media delivery systems ( MTS) or by using a wall mounting frame or an adapter plate can be mounted to a wall.

Some devices are available as a table model or combined table / wall model. The historical subscriber Payphones 55b (Subs Mü 55b) is an example of a table model. This was mainly in restaurants, hotels and similar establishments, partly on the counter or in telephone booths and was colloquially referred to as " Grosch grave ".

Public pay phones are only available as wall-mounted units.

The development went from mechanical, via the electro-mechanical, electronic part to this electronic payphone.

Over a period of more than 35 years (approximately 1928-1965 ) the pay phone 28 was used. This payphone was used both for self-chosen local calls as well as for operator assisted long distance calls. It could be thrown into 4 different slots Throw 1 DM, 50 Pf, 10 Pf - 5 and Pf coins. In a local call, the time-independent cost 20 Pf, the number of the subscriber could be chosen in the same local network after insertion of two 10 Pf coins. In a telephone conversation, the first telephone exchange was called. The mediating person took the call request on, asked how long the interview will take at least, calling the cost of the call ( eg 95 Pf for a 3 -minute call over a distance of 60 km). The caller was asked which denomination and order, he will throw the coins. At the end of the respective coin channel the coins met on sound bars. The mediating person could hear what coins were in what quantity thus thrown. The mediating person had the connection set up in the meantime with connecting cords (possibly depending on the distance were other people involved in it ). The caller was asked to press the number button, after which the coins were collected during fights. The connection is then switched through. Towards the end of the conversation, the caller was asked if he wants to continue the conversation. If necessary, he was asked to throw in more coins. With the introduction of Selbstwählferndienstes and Fernwahlmünzfernsprecher ( MünzFw ) in the Federal Republic of Germany was the replacement of the payphone 28 from about 1956 to 1965

The Fernwahlmünzfernsprecher ( MünzFw ) allowed long distance calls in the " IDD " and was continuously collect coins in a position, depending on the price of the remote connection and the duration of the call. In the mint models MünzFw 56, 63 and 57 of the German Federal Post Office the "Talking Guest" could by an existing window to see how the number of the coins became shorter and shorter, and was thus able, in time nachzuwerfen more coins. These devices had a very complex electromechanical internal structure.

Münztelefontypen

Payphone 23

The Payphone 23, introduced on the German Federal Post and Telecom in 1992, is an electronic software controlled payphone for analog connections. It is equipped with coin, Münzspeicherwagen, and integrated set- testing program. It has a remote control that automatically logs on a background system using an integrated modem error (for example, defects in components, missing handset ), operating conditions (for example, full coin box ) or departures (for example, left open the cassette mounting door, missing coin box ), to the all public coin and card phones Deutsche Telekom AG are turned on.

The Payphone 23 consists of two basic units, the device part including all the components required for operation (BG) and the secured below the payphone cassette extension with the coin box. Modules are:

• Telephone circuit
• Coin processing
• Computer control
• Power supply

Payphone 23 in detail

• Coin validator: checks the inserted coins on diameter, thickness and alloy
• Coin store: caching of stored by the validator found in order for coins during the conversation, while the value of the coins therein is registered and
• Motherboard: The motherboard is virtually the brain of Munzer, is on her the EPROM with the required device software, the modem, the telephone circuit, computer control
• Mother board: on the motherboard, the module coin acceptor, coin stores as well as the main assembly are plugged, further connect all other components and the incoming telephone line to this, the main assembly is located on the rear panel
• Credit display / Display: Two-line LCD display with 32 characters per line, with backlight
• Power Supply: Double insulated, 230 V, to supply the backlight of the display ( the pay phone 23 can also be operated without power supply, it is powered from the telephone line )
• Keypads (TWB): keypads made ​​of zinc die casting with 16 keys, weather resistant, resistant to vandalism. With the older Tastwahlblöcken the keys have only digits. Newer have in addition to the digits nor letters. This alphanumeric keypads is required for devices with SMS functionality.
• Monitored Münzrückgabeschale: This tells the computer a blocked or obstructed return flap
• Telephone Handset with Armored Cable: The handset is either black or magenta
• Handset hanger with hook switch: The switch hook has a non-contact reed contact

Instead of the cassette cultivation is mainly the stronger against break -only version, the Münztresor, terraced.

Cassette extensions and Münztresore are available in different versions, ranging from older welded steel models, with bohrgeschütztem Castle which are less secure, protect over models with lock protection ( lid or glands that are located before the actual castle and this tampering, clogging and the like ), reinforced models made ​​of special steel bohrresistenten to heavy cast vaults are largely aufbruch safe.

Besides calls to the payphone is 23 in many locations also the sending of SMS messages is possible.

Telestation

Alternatives to pure coin or card device offer all payment devices, such as the " Tele station " Deutsche Telekom AG. This device is a " combi boiler " which coins, telephone cards ( smart cards, and in some but not all devices and prepaid cards) may accept credit cards. This model is currently being rebuilt in different versions (long version, short version, wall-mounted version ) or used as a substitute for telephone booths. The Tele station is a device for ISDN connections.

Blue Phone compact

A further development of the "Tele station " is the " Blue Phone compact ". The Blue Phone is a telephone for ISDN connections. In principle, there is a greatly shortened telestation without remote indicator ( illuminated Telekom logo), which is designed for installation in telephone booths. This may be the successor to the payphone 23, since the production of payphone -23 complete units set in the factory " Blue Phone compact ". The manufacturer of the Blue Phone devices is the company IPM PayPhone Systems GmbH.

The "Tele stations " and the " Blue Phone compact ", only the housing (Stand and wall versions) are different, the actual piece of equipment is the same for all models and can be used interchangeably. This facilitates troubleshooting and service technicians must carry fewer spare parts. This piece of equipment is referred to as "Blue Phone". The Blue Phone is a door to the all parts needed to make phone calls are grown. Exterior: handset, handset hanger, keyboard, display, coin and card reader slot and the return of the flap Münzrückgabebechers for unused coins. Inside: card reader, coin acceptor, coin store, "Blue Face" ( a box of the actual phone calls and communicating with the background system allows ) with various interfaces and connectors, in which all the modules, the handset and the telephone line which leads to the NT, connected be.

Future of the payphone

The trend in recent years to replace payphones by telephones or completely break down, is now (as of July 2006) at Deutsche Telekom reversed. Payphones are amplified again used or refurbished (like the all payment device Blue Phone Compact), since the conversion of card devices is declining.