B-Netz

B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.wikipedia
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Mobile radio telephone

0Gmanual mobile telephone systemmobile radio telephony
B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.
The B-Netz launched 1972 in West Germany as the country's second public commercial mobile phone network (but the first one that did not require human operators to connect calls)

C-Netz

1G cell phones (C-Netz)C-450C-Net C450
The B-Netz would eventually be superseded by the technically superior C-Netz, which was put into operation on May 1, 1985.
It utilized the C450 standard and was the third and last update of a series of analog mobile phone systems used primarily within Germany, superseding the B-Netz and the A-Netz before it. It has been decommissioned, replaced by both the newer D-Netz (GSM-900) and E-Netz (GSM-1800) systems.

Analog signal

analoganalogueanalogue signal
B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.

Deutsche Bundespost

German Federal Post OfficeGerman Post OfficeBundespost
B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.

Germany

🇩🇪GermanGER
B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.

West Germany

West GermanFederal Republic of GermanyGermany
B-Netz was an analog, commercial mobile radio telephone network that was operated by the Deutsche Bundespost in Germany (at first only West Germany) from 1972 until 1994.

Austria

🇦🇹AUTAustrian
The system was also implemented in neighboring countries Austria, The Netherlands and Luxembourg. At its height in 1986, the network had 158 base stations and about 27,000 subscribers in Germany and 1,770 in Austria.

Netherlands

Dutch🇳🇱the Netherlands
The system was also implemented in neighboring countries Austria, The Netherlands and Luxembourg.

Luxembourg

🇱🇺LUXGrand Duchy of Luxembourg
The system was also implemented in neighboring countries Austria, The Netherlands and Luxembourg.

Communication channel

channelchannelscommunications channel
The frequency plan originally included only 38 channels (with one call possible per frequency channel), but it was upgraded to incorporate the A-Netz frequencies when that network was retired in 1980.

Frequency

frequenciesperiodperiodic
The frequency plan originally included only 38 channels (with one call possible per frequency channel), but it was upgraded to incorporate the A-Netz frequencies when that network was retired in 1980.

Handset

telephone handsethandset receiverphone receivers
A major limitation of system was that, in order to reach a subscriber, one had to know his location since the handset would assume the local area code of the base station serving it. Handoff was not possible and calls were dropped when cells were switched.

Telephone numbering plan

Area codeCalling codearea codes
A major limitation of system was that, in order to reach a subscriber, one had to know his location since the handset would assume the local area code of the base station serving it. Handoff was not possible and calls were dropped when cells were switched.

Handover

handoffhanded overhand off
A major limitation of system was that, in order to reach a subscriber, one had to know his location since the handset would assume the local area code of the base station serving it. Handoff was not possible and calls were dropped when cells were switched.

Mobile phone signal

dropped callcell phone receptiondead zones
A major limitation of system was that, in order to reach a subscriber, one had to know his location since the handset would assume the local area code of the base station serving it. Handoff was not possible and calls were dropped when cells were switched.

Roaming

roaminternational roamingnational roaming
Roaming was possible between the implementing countries.

Base station

base stationsbaseradio base station
At its height in 1986, the network had 158 base stations and about 27,000 subscribers in Germany and 1,770 in Austria.

West Berlin

WestBerlinWest-Berlin
At the end of 1988, there were 1,078 participants in West Berlin alone.

Erlang (unit)

Erlangblockingblocking probability
The network was vastly oversubscribed and finding an available channel could prove difficult.

Encryption

encryptedencryptencrypting
The connection between base station and handset unencrypted, so eavesdropping was easy and common.

Eavesdropping

eavesdropeavesdroppereavesdropped
The connection between base station and handset unencrypted, so eavesdropping was easy and common.

Multiplexing

multiplexedmultiplexmultiplexes
Multiplexing: Frequency division multiplexing

Frequency-division multiplexing

frequency division multiplexingFDMfrequency division multiplex
Multiplexing: Frequency division multiplexing