There are very few VoIP services that don't use SIP to communicate, Skype is one and maybe a couple of others around the world, but in general almost all provider use SIP even if they lock the device and don't tell you what your SIP account details are.
I don't know about that particular device.
I do suggest that you look into the SPA 3000 or SPA 3102 Sipura FXO adapter. It will take any analogue line, whether its coming from the phone jack, or the ATA of any voip service and it will interface itself with NCH software such as Axon and indirectly with IVM so you can have incoming calls managed by the computer using Axon and have various rules about where to send the calls, eg ring the phones in the house or send the call to IVM to take a voicemail message. The advantage of the Sipura FXO adapter is it also enables you to call out on the phone line from any digital phone connected to Axon over the network.
If you want more information on the advantages of the FXO adapter, what its purpose is and how it compares to voice modem / board please PM/Message me