Below you'll find a list of all posts that have been categorized as “isdn”
Onecom, UK’s largest independent business telecoms provider 20th May 2019 Blog, Broadband, Fixed-Line, VoIP, ISDN, Internet calls, SIP trunking, telephones
Traditionally, Integrated service digital network (ISDN) technology allowed inbound and outbound voice calls through a ‘digital’ line – through the[…]
