O2 outage outrage blamed on new Ericsson databas

2 has fixed its poorly mobile network, so now everyone can start asking what went wrong and what the company is going to do about it.

O2's press office isn't responding to queries. However, our understanding from various sources is thatthe day-long outage was caused by the transition from using a traditional Home Location Register (which stores details of the subscribers authorised to use the network) to Ericsson's Centralized User Database (CUDB).

The CUDB is supposed to consolidate user records, supporting additional applications, and provide a single point of access – but on this occasion it appears that it also provided a single point of failure. With the database unavailable, mobiles and other devices were gradually booted off the network.


More here - http://www.theregister.co.uk/2012/07/13/o2_outage_cause/


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