Bandwidth Messaging API vs O2 Business SIP Trunking
| Bandwidth Messaging API | O2 Business SIP Trunking | |
|---|---|---|
| Free plan | No | No |
| Free trial | Yes | No |
| Paid from | — | £1/mo |
| Open source | No | No |
| Platforms | api, Web | Web |
| Free plan | No | No |
| Number porting | Yes | Yes |
| Emergency calling | Yes | Yes |
| Encrypted signaling | Yes | — |
| Pricing model | — | per-minute |
| Toll-free numbers | — | Yes |
Both are listed in Best SIP Trunking Providers. On Samsung Mobile US Press, Bandwidth Messaging API scores higher on our published basis.