What are the services offered by coredial? Also, CoreDial offers several services including Hosted PBX and VoIP, SIP Trunking, Shared SIP Trunking, Unified Communications, and Virtual Auto Attendant and Mobile VoIP. With such a wide variety of offerings at their disposal, the provider offers packages for users.What is coredial max new? CoreDial Max New! High-Revenue Agent Alternative. Our new program lets you leave the back office work to CoreDial. We handle invoicing, collections, taxation, remittance and compliance while you focus on selling, winning deals, building value in your brand and creating strong, one-stop-shop relationships with your customers.Why choose cordial? “Cordial is the only platform we found that allows us to truly take advantage of all of our data. From our very first interaction with a user, we are able to send customized messages based on their interests. We can add real value to our users by offering related and useful information as well as products that could support them.