SIP, VoIP & Software

Frequently Asked Questions about SIP, VoIP and Software

Find the answer to your question

Articles
Title
What is VoIP?
What is SIP?
How can I receive or make calls using virtual telephony?
What is a SIP application (softphone) and how does it work?
How do I download and configure a SIP application (Zoiper, Xlite, Linphone or PortSip)?
What is Caller ID?

Freezvon Contact Information and Support Online Help