1LOOPCTRL(8)               Linux System Administration              LOOPCTRL(8)
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NAME

6       loopctrl - configure isdnloop ISDN driver
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SYNOPSIS

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

12       loopctrl is used to setup the isdnloop ISDN driver.
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OPTIONS

15       -d Driver-Id
16              selects the virtual S0 interface named by Driver-Id.  Driver-Ids
17              are defined during driver initialisation. See isdnloop(4) for  a
18              description  of  the syntax to be used for modularised and mono‐
19              lithic driver versions.  This option must be  used  to  identify
20              the  virtual S0 interface if more than one S0 interface is exis‐
21              tent. If a single virtual S0 interface is used, it may be  omit‐
22              ted.  If using more than one virtual card, support for the other
23              cards is enabled with the add action of loopctrl.  Ids  may  not
24              start with digits or small x, because these values are misinter‐
25              preted as numeric parameters by insmod.  For loading the module,
26              always the newest modutils package should be used to avoid prob‐
27              lems during load.
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29       The following actions may be given to loopctrl.
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31       add [id]
32              enables support for an additional virtual card in the driver. If
33              id  is missing, adds a card with an id given by the system. with
34              id given, adds a card with an Id given  by  the  user.  Ids  are
35              checked  against  conflicts, and if a conflict happens, replaced
36              by the system in the same manner as if no Id was supplied.
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38       leased on|off
39              switches between normal (dialup) and leased-line  mode.  Leased-
40              line  mode  is  intended  for usage with S64K-lines or - if both
41              channels are used - for S02. These lines do not have  a  D-chan‐
42              nel.  When  leased-line  mode  is  enabled, the driver simulates
43              incoming calls using special  "phone-numbers"  for  calling  and
44              called address which are generated as follows:
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46              Calling number:
47                     LEASEDx
48                            where  x  is  the  internal  slot-number of the S0
49                            interface. This number starts with 0 for the first
50                            S0  interface  and is incremented by one for every
51                            S0 interface configured using the add action.
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53              Called number:
54                     x
55                            where x is equal to  the  channel  number  of  the
56                            calling S0 interface starting with 1.
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58       start protocol phone1 [phone2 phone3]
59              starts the driver with the given D-channel protocol. If protocol
60              is 1tr6, only phone1 has to be given. It is meant to be the base
61              number of the virtual S0 interface to which the EAZ is appended.
62              If protocol is dss1, phone1, phone2 and phone3 have to be  given
63              and represent the three MSNs of the virtual S0 interface.
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65       dump   is  available  if  the program is configured using the --enable-
66              dump option only. The contents of internal driver  variables  is
67              dumped on stdout.
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BUGS

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

74       © 1997 by Fritz Elfert <fritz@isdn4linux.de>
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SEE ALSO

77       isdnctrl(8), isdnloop(4), isdninfo(4), isdnctrl(4), ttyI(4).
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81isdn4k-utils-3.13                 1999/09/06                       LOOPCTRL(8)
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