Prefix 400 for commercial calls in Spain: requirements, deadlines and how it affects users and operators (BOE 2026)
We now have the BOE that intends to regulate commercial calls once and for all. It’s the Resolution of 14 April 2026,…
Tag: prefix 400
OAC, the successor to Opus: what it is and why it matters
OAC (Open Audio Codec) is the new open-source audio codec developed by the Alliance for Open Media (AOMedia) —the same alliance that…
The State of IP Telephony and VoIP in 2026: Between Artificial Intelligence and Free Software
The other day, someone asked in Sinologic’s Telegram channel whether we were still working with IP telephony or if everything was now…