Specifications

Hardware Reference 9
C613-03092-00 REV D
Expandable Gigabit Switches
These gigabit link aggregation switches operate with other switches that have
10Mb/100Mb/1Gb/10Gb Ethernet ports. The AT-9924Ts or x900-24X switches
can act as a gigabit server backbone or pass aggregated traffic over its gigabit
ports. These switches can also aggregate gigabit desktop user connections and
pass traffic to other 10 Gigabit Ethernet equipment. They are:
■ AT-9924Ts
■ x900-24XT
■ x900-24XT-N (NEBS compliant model)
Environmental
conditions
■ Operating temperature range: 0º C to 40º C (32ºF to 104ºF) derated by 1°C
per 305 Meters (1000ft)
■ Storage temperature range: -25ºC to 70º C (-13ºF to 158ºF)
■ Relative humidity range for operation: 5% to 80% non-condensing
■ Relative humidity range for storage: 5% to 95% non-condensing
■ Operational altitude: 3,050 metres maximum (10,000 feet)
Regulatory
standards
■ EMC: EN55022 class A, FCC class A, and VCCI class A.
■ EN61000-3 levels 2 (Harmonics), and 3 (Flicker)—AC models only
■ Immunity: EN55024
■ Safety: UL60950-1, CAN/CSA-C22.2 NO. 60950-1-03, EN60950-1,
AS/NZS60950, and EN60825-1
■ Certification: UL, cUL, and TUV
Switching core ■ Application-Specific Integrated Circuit (ASIC) switch chip
■ High performance IPv4 switching
■ 128MBytes packet buffer memory with XEMs
Processing core ■ 667MHz RISC Processor
■ 32MBytes of non-expandable fixed flash
■ 512MBytes Double Data Rate (DDR) Synchronous DRAM, expandable to
1gigabyte
■ 512kBytes of NVSRAM