I'm wondering if it is possible to write a program to change the FROM field in the SIP-header of the standard VoIP-client to include display-name information?

The "public user name" seems settings seems to only specify the SIP-URI part of the address and I've not succeeded to find a method to set a display name manually, through Client Provisioning or using a DM-solution. My last hope is to be able to write a small symbian program to do this.

Any help is highly appreciated.