MAKE AND RECEIVE SIP BASED PHONE CALLS
You can easily make and receive SIP (Session Initiation Protocol) based phone calls through any SIP gateway or SIP based IP-Telephony service provider.
It requires to get the following information from any SIP based IP-Telephony service provider.
Login-Id Login Password SIP Proxy IP or FQDN SIP outbound proxy IP or FQDN
After getting the information:
1. Construct SIP FromURI.
Login-Id<sip:Login-Id@Your-IP-Address> "Use GetMyIP() exported method to get your IP"
e-g: 73232<sip:73232@66.33.54.8> OR alice<sip:alice@64.23.55.89>
2. Initalize VaxVoIP SIP component by providing Listen port, SIP FromURI and other information.
3. Register to the SIP Proxy Server.
4. Construct the SIP ToURI.
sip:PhoneNo@SIP-Proxy-IP-or-FQDN
e-g: sip:18006542321@sip.vaxvoip.com
5. Connect to the Proxy Server using SIP ToURI.
6. On successful connection, phone bell on the other end will start ringing.
Sequence of Method Calls:

METHODS | EVENTS
Initialize() |
RegisterToProxy() |
| OnSuccessToRegister()
Connect() |
| OnConnecting()
| OnProvisionalResponse()
| OnSuccessToConnect()
Phone call connected, having conversation.
Disconnect() |

For more details, please see the sample source code and method details document