SIP Trunking from O2 @o2ukbusiness

SIP Trunking from O2 @o2ukbusiness

Uploaded October 2018 | Updated September 2026, 1 week ago

SIP Trunking is the replacement for ISDN, connecting a business’s PBX to the PSTN via the Public internet, Ethernet or other IP networks (such as Janet).

Find out more here:
o2.co.uk/enterprise/services/unified-communications/voice

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