With AsteriskC2D you can appear to be in the office when your out on the road.

With AsteriskC2D handling your dialling, the people your calling will see the phone number of your office (Asterisk system) rather than you mobile number.  This means that you are not giving out your mobile number inadvertently.

Depending on how you’ve configured your Asterisk server you can make the number to appear to come from anything you like, maybe your personal DDI, the office DDI, or something else.