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       loopctrl [-d Driver-Id] action options ...


       loopctrl is used to setup the isdnloop ISDN driver.


       -d Driver-Id
              selects  the  virtual S0 interface named by Driver-
              Id.  Driver-Ids are defined during driver initiali­
              sation.  See  isdnloop(4)  for a description of the
              syntax to be used for  modularised  and  monolithic
              driver versions.  This option must be used to iden­
              tify the virtual S0 interface if more than  one  S0
              interface  is  existent.  If  a  single  virtual S0
              interface is used, it may  be  omitted.   If  using
              more  than  one virtual card, support for the other
              cards is enabled with the add action  of  loopctrl.
              Ids  may  not start with digits or small x, because
              these values are misinterpreted as numeric  parame­
              ters by insmod.  For loading the module, always the
              newest modutils package should  be  used  to  avoid
              problems during load.

       The following actions may be given to loopctrl.

       add [id]
              enables  support  for an additional virtual card in
              the driver. If id is missing, adds a card  with  an
              id  given by the system. with id given, adds a card
              with an Id given  by  the  user.  Ids  are  checked
              against  conflicts,  and  if  a  conflict  happens,
              replaced by the system in the same manner as if  no
              Id was supplied.

       leased on|off
              switches  between  normal  (dialup) and leased-line
              mode. Leased-line mode is intended for  usage  with
              S64K-lines  or  -  if  both channels are used - for
              S02. These lines do  not  have  a  D-channel.  When
              leased-line  mode  is enabled, the driver simulates
              incoming calls using  special  "phone-numbers"  for
              calling  and  called address which are generated as

              Calling number:
                             where x is the internal  slot-number
                             of  the  S0  interface.  This number
                             starts  with  0  for  the  first  S0
                             interface  and is incremented by one

              If protocol is dss1, phone1, phone2 and phone3 have
              to be given and represent the  three  MSNs  of  the
              virtual S0 interface.

       dump   is available if the program is configured using the
              --enable-dump option only. The contents of internal
              driver variables is dumped on stdout.


       This  program  and the isdnloop driver are ALPHA code. The
       main intention for this driver is  for  testing  the  link
       level and applications.


       © 1997 by Fritz Elfert <fritz@isdn4linux.de>


       isdnctrl(8),    isdnloop(4),   isdninfo(4),   isdnctrl(4),

isdn4k-utils-3.3            1999/09/06                LOOPCTRL(8)
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