SIP Trunking Provider | SIP Trunk Call Manager | O2 Business
Evolve voice services and make cost savings compared to ISDN
Reliable, secure and cost-effective
SIP Trunks are more cost effective than traditional connections to the public telephone network, such as ISDN.
They’re more flexible, easily adapting to changes in demand, or resilience requirements. And they’ll flex, as your organisation or locations change.
Why choose SIP Trunking?
Simplify your spend
Choose from our three easy-to-understand pricing options so that you’ll always be on top of your spending.
Cut cost and complexity
Move to SIP Trunking and you’ll be able to centralise and rationalise your telephony estate. It doesn’t just make life simpler, it also reduces the cost of maintaining numerous PBXs.
Whatever your business need, we give you the flexibility to add and remove capacity during busy periods, for campaigns or special events.
Get flexible phone numbers
Keep the same geographic numbers when you move office. There’s no ongoing call forwarding costs and no hassle of producing new stationery or updating online details.
Manage your inbound calls
Add on the optional SIP Trunk Call Manager to manage inbound calls to all your geographic and non-geographic numbers from our easy to use portal and mobile app.
With options for complete active-standby or loadsharing between different sites you gain greater certainty that your telephony service will be there when you need it.
SIP Trunking from O2
Replace ISDN and traditional phone lines
A little bit more info
- O2 SIP Trunking Product sheet for medium sized businesses
Read more about O2 SIP Trunking for medium sized businesses
- O2 SIP Trunking Product sheet for larger businesses
Read more about O2 SIP Trunking for larger businesses.
- O2 SIP Trunking tariff document
Get more information the O2 SIP Trunking tariff here including voice termination rates
- O2 SIP Trunking price list.
Download the latest O2 SIP Trunking price list, including pricing for SIP channels, New numbers, Porting Numbers and the minute bundle options.
- SIP Trunk Call Manager product overview