Hi,
Can I use the voip service without using any analog phones? What are special features I should look for?
Thanks,

I can’t technically answer your question. I have only heard of Analog VoIP Adapters - FXS / FXO / PSTN. It depends on the provider. Many providers offer IP phones, softphones (software phones), and wifi phones. For further support and queries I suggest you to contact Broadcore people they have Hosted VoIP PBX system and good support team. They may clarify your queries.