Digi M10 User Manual download pdf (Page 10)

Digi m10 Technical Overview

Page 10 of 26

When receiving a message through the Digi m10, a user creates a message using an SMTP

client and sends it to the ORBCOMM GCC using the appropriate e-mail address (typically

serial#X1@orbcomm.net for North America or serial#X1@orbcomm2.net for the rest of the

world). When the message is received by the GCC, the GCC transmits it through the GES to the

satellite in orbit, which then transmits the message down to the Digi m10. Once the message is

received by the Digi m10, the user can query for the message serially. Note the Data Available

signal asserts when the Digi m10 has received a message.

The message packets sent between the Digi m10 Satellite Modem and the Satellite are optimized

at 107 bytes of user data. This allows for a single packet to be sent to the Satellite with a single

acknowledgement back. After that, the next optimized size is 228 bytes of user data, and then in

111 byte increments.

Alternatively, users can provision their Digi m10 Satellite Modems for IP Gateway usage. This

usage allows customers to use HTTP POST and GET commands with XML to send and receive

messages against a specified host server. When the Digi m10 Satellite Modem is set up for an

IP Gateway account, speed dial 1 is used to route messages to the host server.

Note: If the Digi m10 is powered off, all existing messages in its transmit and receive

queues are lost.

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Digi M10 User Manual Page 10