SOS Alarm Sverige AB is a Swedish publicly owned company that operates emergency number 112 in Sweden.

The enterprise is owned equally by the Government of Sweden and the Swedish Association of Local Authorities and Regions.

At this point of time "SOS" is an initialism of "Samhällets olycksfalls- och säkerhetstjänst" or "The community's accident and security service".

When the subscriber dialed "90 000" on their phone, the number was converted in the telephone exchanges and the telephonist received the call as "90 7XX".

The number was chosen at a time when phones were large and had rotary dials, and it was specially adapted for Sweden.

The system worked as follow; you lift the phone handset, push the hookswitch in the pulse train sequence 10-paus-1-paus-1-paus-1-paus-1.

[3] In 2011 criticism was directed towards SOS Alarm on the basis that the operator was considered to have misjudged callers emergency situations.