BinTec X3200, User Manual

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180 BinTec Communications AG
Advanced Configuration
6
➤
Repeat these steps as often as necessary until you have created an entry
for every user.
6.1.3 General PPP Settings
Authentication You must enter the
➤➤
PPP settings for each WAN partner, e.g. the settings
needed for authentication of connection partners with
➤➤
CHAP or
➤➤
PAP (see chapter 5.2.1, page 131 ). If a call is received, X3200 then rec-
ognizes the calling WAN partner from the calling party number with the aid of
➤➤
CLID (Calling Line Identification) and therefore knows what authentica-
tion negotiations it has agreed with this partner. The call is accepted if the au-
thentication is correct.
CLID In some cases, it is not possible to identify an incoming call via CLID. This is the
case, for example,
■
if the call is made over an analog line (the caller dials into your router via a
➤➤
modem ),
■
if the caller suppresses the CLID facility.
In both cases, X3200 receives no calling line number. The caller therefore can-
not be identified by CLID, even if the caller is entered as a WAN partner. X3200
does not know which
➤➤
PPP authentication protocol to use to identify the
incoming call.
General PPP settings In order to answer the call in spite of the identification problem, X3200 executes
the defined general PPP authentication protocol with the caller. This protocol
does not refer to a certain WAN partner. If the data (password, partner PPP ID)
obtained by executing the authentication protocol are the same as the data of
an entered WAN partner, X3200 accepts the incoming call.