1. Open phone's web interface.
In order to open the phone's web interface you need to enter the device's IP address in the URL bar.
For example: http://192.168.1.72 and click "Enter".
You can attain the IP address by pressing the central button on the device's base box.
Note: Gigaset A510IP or Gigaset С610A/C530A can be connected up to 6 handsets, but simultaneous calls can be made only on 2 handsets or less.
2. Open "Telephony" - "Connections".
Under the column "Active", check the box of the account you wish to set and click "Edit".
3. Enter the following data:
Name or number of connection: zadarma
Password: Your password of sip number from "SIP Connection" in personal account.
Username: Your sip number (for example 111111) from personal account
Name: Your sip number (for example 111111) from personal account
Proxy server address: sip.zadarma.com
Server of registration: sip.zadarma.com
Name for entering: Your internal PBX number (for example 1234-100) from personal account
Password: Your password of internal PBX number from personal account
Username: Your internal PBX number (for example 1234-100) from personal account
Name: Your internal PBX number (for example 1234-100) from personal account
Proxy server address: pbx.zadarma.com
Server of registration: pbx.zadarma.com
4.Setting up call routing:
Open "Telephony" - "Number setting".
On this page you can set the device's default route for outgoing calls (via VoIP or landline)
5. Range of RTP ports 10000-20000: