Windows Configuration; Overview; Configure The Cdc_Ncm Connection Settings - OptConnect ema Windows Networking Manual

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If ema does not respond with the above result code, reissue the first AT command, or consult
Telit's AT command manual.
3. Enable GPRS Network Attaching: In order to establish a data connection, ema must attach to
the General Packet Radio Services (GPRS) network. Issue the following AT command:
AT+CGATT=1
4. Assign PDP Context to the CDC_NCM stack: The proper PDP context must be assigned to the
CDC_NCM stack. Issue the following AT command:
AT#NCM=1,<cid>
where <cid> is replaced with "1" for AT&T users, and "6" for Verizon Users.
5. Activate the PDP Context: Activate the PDP context by issuing the following AT command:
AT+CGACT=1,<cid>
where <cid> is replaced with "1" for AT&T users, and "6" for Verizon Users. If the activation fails,
retry the above AT command, check signal quality, or try a device reset.
6. Open the Data Connection: To open the data connection, issue the following AT command:
AT+CGDATA="M-RAW_IP",<cid>
where <cid> is replaced with "1" for AT&T users, and "6" for Verizon Users.
ema will respond with:
CONNECT
OK
At this point, the data connection has been opened. Additionally, ema is still able to accept AT
commands if needed.
2.3

Windows Configuration

2.3.1 Overview

Now that ema has been properly configured to use CDC_NCM protocol to establish a data connection,
several settings must be configured in Windows to enable the internet connection.

2.3.2 Configure the CDC_NCM Connection Settings

1. Open the CDC_NCM Connection Settings: Open the Windows "Network and Sharing Center"
and click on the link "Change Adapter Settings". The window should generally look like Figure 3.
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