Colt SIP Trunking vs O2 Business SIP Trunking
| Colt SIP Trunking | O2 Business SIP Trunking | |
|---|---|---|
| Free plan | No | |
| Free trial | No | |
| Paid from | £1/mo | |
| Platforms | Web | Web |
| Pricing model | hybrid | per-minute |
| Number porting | Yes | Yes |
| Emergency calling | Yes | Yes |
| Encrypted signaling | Yes | |
| Free plan | No | |
| Toll-free numbers | Yes |
Listed together in Best SIP Trunking Providers