i purchased three accounts on tier 5 accounts, can you do VoIP integrations with CallScaler ? they are using Signal Wire as their back end.

https://appsumo.com/products/callscaler/
https://callscaler.com/docs/api-reference
https://callscaler.com/docs

Is it possible to make calls and text inside Heffl CRM Via Callscaler? How can i do VoIP integrations with CallScaler so my sales team does not have to leave the CRM and do everything within one location.