The emergency numbers 110 and 112 of the fire brigade and police were also not available in NRW on Thursday.
According to Telekom, the cause is the introduction of new software.
Clear criticism came from NRW Interior Minister Reul.
Bonn - The cause for the approximately 70 minute nationwide failure of the emergency numbers 110 and 112 by the police and fire brigade early on Thursday morning was, according to Telekom, the "introduction of new software".
As the company announced at noon in Bonn on request, routine maintenance work disrupted the accessibility of the emergency call control centers in various regions of Germany at 4:30 a.m.
At 5.40 a.m., all control centers were again fully accessible, it said.
“The cause of the malfunction was probably the introduction of new software that had been thoroughly tested beforehand and had not shown any abnormalities.
We can currently rule out a hacker attack, ”said a Telekom spokesman for the German press agency.
"The detailed analysis is ongoing."
Clear criticism came from the Interior Minister of North Rhine-Westphalia, Herbert Reul (CDU). "Of course we will follow up on this problem together with Deutsche Telekom - it doesn't work that way!" Said Reul in a statement on Thursday. Apparently the emergency call failure went off lightly. No major negative effects on the work and operations of the fire brigade and police due to the inaccessibility of the emergency numbers have so far not been known.
After all, Telekom reacted quickly and was able to gradually eliminate the disruptions from 6:00 a.m., said Reul.
Above all, he praised the police and fire brigade in North Rhine-Westphalia, who “informed and communicated directly and in detail via the local and state-wide radios and social networks” about which telephone numbers they could be reached.
"All available units were deployed to ensure the greatest possible presence - the fire brigade has also manned their fire stations," explained Reul.
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The Federal Office for Information Security (BSI) did not have any indications of a cyber attack.
Telekom reported the disruption to the BSI and the Federal Network Agency in accordance with the statutory provisions.
In addition to Baden-Württemberg, Bremen, Hesse, Lower Saxony, Saarland, Saxony-Anhalt, Schleswig-Holstein and Thuringia, North Rhine-Westphalia was affected by the failure of the emergency numbers.
According to the police in Münster, the failure of the 110 only lasted about 20 minutes.
"The disturbance was already over at 5:43 am," said a spokeswoman for the police headquarters.
However, the control center could be reached continuously via the known landline number.
There were no major problems.
More police cars were not sent out because of this.
In the most populous federal state, all night duty police officers were on duty a little longer.
The population had been asked, among other things, via local and social media such as Facebook and Twitter to contact the local police directly in an emergency.
The police in North Rhine-Westphalia (https://polizei.nrw/artikel/polizei-vor-ort) quickly published the relevant phone numbers for the district police on its website.
dpa
