DCC features
Basic DCC features
Basic DCC offers the following features:
Supporting a wide range of dialup interfaces, such as synchronous/asynchronous serial interface, AUX port, ISDN BRI or PRI interface, and AM interface to accommodate to different networking requirements.
Supporting link layer protocol PPP.
Supporting IP on dialup interfaces.
Supporting dynamic routing protocols, such as RIP and OSPF, on dialup interfaces.
Providing flexible dialup interface backup.
Allowing you to manage different modems on the user interface.
Callback through DCC
In callback, the called party originates a return call to the calling party. The calling party is the client and the called party is the server. The callback client originates a call first, and the callback server decides whether to originate a return call. If a callback is needed, the server will immediately disconnect and originate a return call.
DCC callback offers the following benefits:
Enhanced security—When placing a return call, the server dials the calling number configured at the local end. This prevents the insecurity resulting from username and password compromise.
Payer change—This is useful for saving cost in the case that the call rates in two directions are different.
Consolidated call charge bills—Facilitating settlement.
PPP callback and ISDN caller identification callback features are available. The PPP callback conforms to RFC 1570 specifications and can be used where both client and server own fixed network addresses, or the client accepts dynamic network address assignment.