OnSIP is a total phone system replacement hosted on the Internet. Using a simple and inexpensive iTunes App called Bria (or any other mobile VoIP client), tether your iPhones to the corporate phone system as if they are desk phones complete with extension dialing, call transfers, dial out, etc. You won't use cell minutes, just Wifi or 3G data connections, to make and receive calls. We allow up to 10 device registrations per user absolutely free. Pay nothing at all to go mobile!

OnSIP replaces the old phone system:

• "PBX" features - auto-attendant, extensions, conferencing, business hour rules, dial-by-name directory and voicemail-to-email.
• Telco services - telephone numbers, toll free numbers, outbound calling, and international calling. All provisioned in real time!

Bria replaces the old desk phone:

• Call control - inbound/outbound calling, hold, transfer, split calls, join calls
• Mobility - Works anywhere there's WiFi or 3G

How’s this all going to work?

• Sign up for a free 30 day trial of OnSIP. – 5 minutes
• Get Bria on your iPhones for you and your teammates. – 5 minutes
• Set up your OnSIP account - 10 minutes
• Configure your Bria apps to register with OnSIP – 1 minute
• Kick the tires by calling each other by extension FOR FREE!

In 21 minutes, you’ll have a completely mobile phone system!