Did you know Telstra are disconnecting ISDN services from September 2019? Is your business ready to make the switch to VoIP based voice services? 𝗪𝗵𝗮𝘁 𝗶𝘀 𝗜𝗦𝗗𝗡? ISDN is 30-year old telecommunications transmission technology that carries voice and data services over the public switched telephone network (PSTN). When it was introduced, ISDN was one of […]
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