Alcatel Speed Touch Pro User Manual page 155

8 PPP & IP Routing
Idle time limit
In case you configured a PPP connection for 'Dial on demand',
the 'Idle Time Limit' box allows you to specify the time after which
an opened, but unused PPP session is closed.
If left free, the idle limit time is infinite (i.e. the PPP session will
never be closed).
LCP echo (n) requests
If a PPP session is up, it can issue Link Control Protocol (LCP) echo
requests at regular intervals and expects LCP echo replies in
return.
This checkbox allows to turn on/off LCP echo request/replies by
respectively setting (n), or clearing the flag.
By default LCP echo is on (i.e. flagged n), allowing the local PPP
peer to detect communication errors, resulting in closing of the
PPP session.
PAP (n): used
The default PPP authentication protocol is Challenge Handshake
Authentication Protocol (CHAP).
authentication protocol
Setting the PAP flag (n) will use Password Authentication
Protocol (PAP) instead.
ACCOMP (n): used
Address and Control field COMPression (ACCOMP), sometimes
abbreviated as ACCM, is by default enabled, i.e. flagged (n).
PPP framing
This option flag should not be cleared, except in special
circumstances, i.e. where the remote PPP server expects to see
HDLC like framing (FF03 imposed to the PPP packet).
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