LANCOM models with an ISDN interface support automatic callback.
In addition to the callback via the D-channel, the devices also support the Microsoft CBCP (Callback Control Protocol) and the callback via PPP as per RFC 1570 (PPP LCP extensions). There is also the option of a fast callback using a process developed by LANCOM Systems. PCs with the Windows operating system can only be called back using the CBCP.
