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The Mobile Office DI 28 infrared modem (optional accessory) turns the T20e into a wireless
modem using AT commands. This provides data and e-mail communication, as well as Internet/
Intranet access, for a connected PC, PDA or handheld device.
In the T20e, AT commands are used both for:
• controlling the data communication between the PC and the remote service. This requires
the Mobile Office DI 28 infrared modem (optional accessory).
• configuring and requesting settings and behaviours in the phone, from a connected PC or
PDA. This requires the Mobile Office DI 28 infrared modem (optional accessory), or the
RS-232 cable DRS-10 (optional accessory).
When the Mobile Office DI 28 infrared modem (optional accessory) is connected, the T20e con-
nects using infrared to a PC, a PDA, a laptop PC or another phone or mobile device. Infrared
communication creates a data link between two communications devices through an infrared
beam of light. Key benefits using T20e with the infrared modem:
• True wireless communication
• Low power consumption
• Secure data transmission with the IrDA DATA standard
• Send and receive e-mail and data on the connected PC/PDA
• Connect to the Internet or Intranet/LAN from the connected PC/PDA
By using Mobile Office DI 28, you can also manage the phone book, send SMS and personalize
the start-up and shut-down shows.
Please refer to further information about the Ericsson Mobile Office DI 28 infrared modem,
available at http://www.ericsson.com.
The RS-232 cable DRS-10 (optional accessory) makes it possible to connect the T20e to a PC or
PDA. This provides access to configuration settings in the phone. Also, you can personalize the
start-up and shut-down shows.
Please refer to further information about the RS-232 cable DRS-10, available at
http://www.ericsson.com.
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