Connect your IP phone system to the Zadarma service for premium quality communication around the world!
If you run an enterprise, call center or telecommunications operator, you may already have your own phone system installed. Connecting your system to the Zadarma cloud allows you to make premium quality calls to any country at highly competitive rates. You can also connect phone numbers in over 110 countries.
SIP is the primary protocol for IP telephony. If your company already has a telephone system set up, connecting via SIP trunk is the optimal way to link you to the rest of the world. This connection is much more reliable and flexible than a digital phone transmission (PRI), as you can use several internet connections for maximum reliability.
To connect to the Zadarma cloud, your phone system must support a SIP connection. If your PBX is set up without SIP support, you can connect an IP-phone system gateway to the PBX (using analogue or digital PRI/E1 ports for an external phone line).
Using the SIP login and password.
The easiest and the fastest method that is supported by all equipment types.
To connect, simply register and copy the connection data from the Settings/SIP Connection section. You can find the setup instructions for popular hardware equipment and software settings on the website. The connection is suitable for small and large systems. However, there is a drawback: only one CallerID (the purchased phone number displayed in the Call Line Identification) can be used for one connection in order to make calls.
Creating the SIP trunk with IP authorization.
Suitable for large call centers and VoIP providers. Enables the transfer of any amount of connected numbers as a CallerID.
A fixed external IP address is mandatory for this type of connection. You can find more information about IP authorization setup in the "FAQ" section. It is also possible to route incoming calls from virtual phone numbers to your server's IP (directing the calls to SIP URI).
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