To invite your phonebook contact on oc2ps you need to upload your phonebook contact to their server. On clicking "upload contact" link you receive an SMS with sync setting and you need to save it and than you can simply sync your contact with oc2ps server.A close examination of sync setting reveal that they are using funambol server in backend for syncing phone book on server . Right now they don't allow to sync calendar and SMS but I believe that functionality can be added later. I personally like funambol very much. It’s an industry standard for SyncML server.
This phone book backup functionality is great values add for end customer as they don't have to use a separate service to backup their cellphone data and they can use that data in their social network too.These integrated approaches to virility in oc2ps make it a unique one stop social networking solution for Indian customer.
You can also attach any media like photo,video,mp3 with your beam .I tried uploading pictures from my cellphone memory and data card and it worked very smoothly. Even on a relatively slow GPRS connection image upload was swift and thumbnail was clear. I uploaded a 9 sec video to oc2ps and it took close to 15 sec on Wi-Fi and 30 sec on GPRS. This is a good benchmark given that I was using it on peak hours of GPRS consumption.