Siemens HC15 Guide de l'utilisateur télécharger pdf (Page 25)

Getting Started with HC15

3.10 HSDPA or GPRS Data Transfer

HC15_startup_v02 Page 25 of 36 2007-2-16

Confidential / Released

Terminating the dial-up network connection

To stop a HSDPA or GPRS data connection disconnect the dial-up network connection. This can be

done in two ways:

1. Double-click the dial-up network connection icon in

the system tray. In the resulting connection status

dialog press the Disconnect button.

2. The other way is available on the Network Connec-

tions page of the Control Panel: Right-click the active

connection to open a context menu where to choose

Disconnect.

3.10.2.1 Local Echo Settings

Due to the initialization strings typically set by modems, a dial-up network connection may automati-

cally change the local echo settings: Opening a dial-up network connection deactivates (ATE0) and

activates (ATE1) the local echo. Releasing the dial-up network connection deactivates the echo once

again (ATE0). As modem and application interface are controlled from the same AT command inter-

preter the change takes effect on both interfaces.

Therefore, after closing a dial-up network connection you are advised to wait a few seconds before

entering an AT command on the Application interface. Otherwise, it is possible that the echo deactiva-

tion command ATE0 is still being executed on the modem interface while another AT command is

already entered on the application interface. As a result, the AT command response expected on the

application interface may appear incomplete.

Likewise, if you enter an AT command on the application interface in parallel to a dial-up network con-

nection running on the modem interface at the time when the echo is deactivated take into account that

the expected response may be indicated either partially or not at all.

Each time after closing a dial-up network connection you are advised to send the ATE1 command to

enable the local echo again.

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Siemens HC15 Guide de l'utilisateur Page 25