The process of downloading the Avaya 1603SW IP Phone SIP Firmware 1.3.4 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the Avaya 1603SW IP Phone SIP Firmware 1.3.4 driver from the primary server - this is the manufacturer’s Avaya official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the Avaya 1603SW IP Phone SIP Firmware 1.3.4 diver.