Belgian Institute for Postal services and Telecommunications
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Fixed telephony
Fixed telephony regards retail and wholesale services for telephone calls made from a fixed device.
At retail level such calls require, in the first place, a link, a connection to a telephone network and, in second place, telephone services.
At wholesale level usually the following services are provided when establishing a call: call origination, call termination and call transit services.
The implementation decisions usually regard the BRIO reference offer (Belgacom Reference Interconnect Offer) aiming at determining the interconnection tariffs and conditions.