[OddsAgainst]

I'm trying to configure the SIP settings on a Nokia N95 to use with BT Broadband talk. The problem is that the Nokia software fields for SIP configuration don't match exactly the names in the configuration data so matching them up is to an extent guesswork. E.g the config gives both a proxy server and an outbound proxy server but there is nowhere on the Nokia to enter the outbound. Is public username the same as username? What is the realm?

I have highlighted in red the fields that I either do not know what data to enter or I am not sure of the correct format, e.g. do I need to precede the server name with "sip:"

As I currently have it set up the handset attempts to register but fails. It will be greatly appreciated if anyone can help.

After the N95 settings are the data used by BT to configure the router.

The Nokia wants to know:

1-Main Settings
Service profile: IETF or Nokia3GPP
Default access point:
Public user name:
Use compression: No or Yes
Registration: When needed or Always on
Use security: Yes or No

2-Proxy Server Settings
Proxy server address:
Realm:
User name:
Password:
Allow loose routing: Yes or No
Transport type: UDP or TCP
Port:

3-Registrar Server Settings
Registrar server address:
Realm:
User name:
Password:
Transport type: UDP or TCP
Port:

Bt Router config data:

SIPTransportProtocol=UDP
&SIPTransportPort=5060
&SIPRegistrarAddress=btsip.bt.com
&SIPRegistrarPort=5060
&SIPOutboundProxyAddress=sip.btsip.bt.net
&SIPOutboundProxyPort=5060
&SIPProxyAddress=btsip.bt.com
&SIPProxyPort=5060
&SIPPhoneNumber1=****************
&SIPCallerName1=
&SIPUsername1=****************@btsip.bt.com
&SIPPassword1=********************************* **