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Sierra Wireless AirCard 881U HSDPA Modem
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Applies to:

Sierra Wireless AirCard 881U Modem

Author/Supplier:

Sierra Wireless

Category:

Network

Requirements:

Windows 7

File Size:

9.3 MB

File Name:

AC88xU_F1_2_3_15ap.exe

Release Date:

12.09.2008

Version:

F1.2.3.15ap

Last Updated:

04.11.2011

Rating:


4
/5 from 20 reviews.

Specifications:

  • Type: Wireless Modem
  • Connection: 3.75G network support (HSUPA/HSDPA)
  • Interface: USB
  • Dimensions: 3.66? x 1.54? x 0.79
  • USB: 2.0

Description:

Sierra?s Aircard 881U is included in the line of USB modems from Sierra, featuring global broadband connectivity. It works in any 3G environment, including those of Korea and Japan, and offers support for 2G as well, if 3G cannot be found. It is designed to work on the HSPA standards (High Speed Packet Access), with a downlink speed of up to 7.2 Mbps and uplink speed of up to 2 Mbps, and also assists VPN for secure corporate network access and e-mail.

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HSPA, standing for High Speed Packet Access, combines two prior protocols for an improved and unified mobile telephony W-CDMA protocol. Both HSDPA and HSUPA are used in this protocol to support a peak data rate of 14 Mbit/s download and an upload of 5.76 Mbit/s. The hike in speed is achieved by a number of upgrades including a shared-channel transmission, a shorter TTI, fast retransmission and MIMO (Multiple Input, Multiple Output) amongst other enhancements.