About Blink Integrated with Audio, Blink provides also Instant Messaging and File Transfer functionality based on SIP SIMPLE standards. – Wide-band Audio (Speex, G722) – Narrow-band Audio (G711, GSM, iLBC) – SMS chat (SIP MESSAGE) – Instant Messaging Sessions (MSRP) – File Transfers (MSRP) – Desktop Sharing (VNC over MSRP) – Address Book Integration