IQ Cloud Xpress (CX) Software Support Package – 1 year – CX500. Provides 1 year of Priority 24x7x365 TAC support for all software related issues. Provides remote software upgrade support, access to Infinera labs for software regression testing and entitlement to new software versions released during the coverage period. This support PON is required for each CX chassis purchased. Purchase of TAC support is a prerequisite to ordering this service.