The failure of the Deutsche Telekom multiplexer hosted in our German telephony provider's datacenter has affected their main network path with the PSTN. During the entire incident an alternative path was available but it was not sufficient to hold the call volumes during peak times. This has created periods of congestion, where random calls towards our German numbers would have resulted in a busy tone.
Deutsche Telekom has confirmed that the hardware has been replaced as the final fix.
Our provider's carrier relations team is meeting with Deutsche Telekom commercial team in the coming days to address details of the incident which remains concern points for both Dixa and our provider, such as response and field intervention times. Another big point to be addressed during the meeting is the redundancy and capacity of the regulated interconnection.