3Com REMOTE ACCESS SYSTEM 1500, Management Manual

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Calling Line Identification Callback
83
After the system determines whether the incoming call ANI matches a
user CLID, the handling of an incoming call is determined by two settings:
the status of CLID security (a modem-level setting) and the incoming user
type (a user-level setting). These two settings are configured
independently. Use the following table to decide which combination best
suits your situation.
Because CLID security is “per modem” and user type is “per user,” more
than one of these options may be used simultaneously on one RAS 1500.
For examples of these options, refer to the “Case Studies” section at the
end of this chapter.
Table 17 Combinations of CLID Security and User Type
Option 1
(Only CLID callback is
possible) CLID security
ENABLED
User type
“CLID_callback” If the ANI of the incoming call matches
the CLID of the user, the user is called
back
If the ANI of the incoming call does
not match the CLID of the user, the
call is rejected.
Option 2
(CLID callback and other
types of calls are
possible) CLID security
DISABLED
User type
“CLID_callback” If the ANI of the incoming call matches
the CLID of the user, the user is called
back
If the ANI of the incoming call does
not match the CLID of the user, the
call is answered as a regular dial-in
call.
Option 3
(CLID callback are not
possible; other types of
calls are possible) CLID security
ENABLED
User type NOT
“CLID_callback” If the ANI of the incoming call matches
the CLID of the user, call is answered
as a regular dial-in call.
If the ANI of the incoming call does
not match the CLID of the user, the
call is rejected.
Option 4
(CLID callback is not
possible; other types of
calls are possible) CLID security
DISABLED
User type NOT
“CLID_callback” The call is answered as a regular dial-in
call.