World Telecom Labs (WTL), a Belgium-based provider of voice-over-internet protocol (VoIP) switches, pre-paid applications and signalling gateways for emerging carriers and telcos, has announced that to date, more than one billion minutes of traffic have passed through its second-generation VoIP switches deployed by Nigeria’s five interconnect exchange carriers. Licensed by the industry watchdog, the Nigerian Communications Commission (NCC), the carriers – Breeze Micro, Exchange, ICN, Niconnx and Solid – have been set up to increase competition and transparency in the local telecoms market. Under the plan, Nigeria’s four leading mobile operators are all now required to divert 10% of their inter-carrier voice and SMS traffic to one of these operators, which kicked off commercial services at the end of last year initially acting as wholesale interconnect carriers for TDM voice traffic. The vendor notes that the five firms are using its switches to transfer traffic between the four existing mobile networks. WTL is also helping the operators with their billing systems and the optimisation of voice traffic to increase capacity and reduce costs.