Here are the SIP settings I have implemented successfully:
Service Profile: IETF
Default access point: Your preferred wireless network
Public username: sip:[username]@callcentric.com
Use compression: No
Registration: Always on (use When needed if you don’t want it to stay connected all the time)
Use security: No
>Proxy server
>>Proxy server address: None
>>Realm: None
>>Username: None
>>Password: None
>>Allow loose routing: Yes
>>Transport type: Auto
>>Port: 5060
>Registrar server
>>Registrar server address: sip:callcentric.com
>>Realm: callcentric.com
>>Username: [username]
>>Password: [password]
>>Allow loose routing: Yes
>>Transport type: UDP
>>Port: 5060
In the above,
[username] stands for the 10-digit Callcentric caller ID number (like 17775551212)
[password] stands for my Callcentric password
After creating the SIP settings profile, you point to them from an Internet Telephone profile. You maintain both profiles under Tools > Settings > Connection. After doing so, there may be a delay before you see the word “Registered” in the SIP settings overview. There are then also Internet call settings under Tools > Settings > Call settings.
Many sources of incorrect, or at best unhelpful, advice are available. Here is a correct one.
The advantage of using the native Nokia SIP mechanism is that there is no need to install any third party software, such as Skype or Fring.
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