and there are more than a hundred SIP providers worldwide that provide the POTS/SIP conversion. SIP origination allows a POTS telephone number to be dialed and answered by a SIP phone. SIP ...

To determine the top SIP trunk services of 2025, we evaluated and compared 15 popular providers. Our research found Plivo to be the top choice due to its flexible pricing and wide global coverage ...

The gateway then sends this information to the SIP provider over the internet. The SIP provider connects the call to the other party, whether using a traditional phone or another SIP trunk.