diff options
Diffstat (limited to 'usr.sbin/i4b/isdntrace/cable.txt')
| -rw-r--r-- | usr.sbin/i4b/isdntrace/cable.txt | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/usr.sbin/i4b/isdntrace/cable.txt b/usr.sbin/i4b/isdntrace/cable.txt deleted file mode 100644 index 21a1cdb..0000000 --- a/usr.sbin/i4b/isdntrace/cable.txt +++ /dev/null @@ -1,62 +0,0 @@ - *--------------------------------------------------------------------------- - * - * Custom cable to trace an ISDN S0 bus with two passive (!) ISDN boards - * --------------------------------------------------------------------- - * - * $Id: cable.txt,v 1.4 1999/12/13 21:25:26 hm Exp $ - * - * $FreeBSD$ - * - * last edit-date: [Mon Dec 13 21:55:42 1999] - * - * -hm documentation of analyze mode - * - *---------------------------------------------------------------------------*/ - -The cable consists of a RJ-45 plug with both tx and rx connected and -two jacks; the tx cables from the plug are wired to one jack and the -rx cables from the plug are wired to the other jack. - -The computer must be equipped with two (!) supported passive cards and -the cable from one card is plugged into one of the jacks while the cable -to from the other card is plugged into the other jack. - -Now one card monitors the tx part of the S0 bus and the other card -monitors the rx part. - -Which card functions as the rx side and which as the tx side can be -specified as options to the isdntrace utility (-R and -T) which has -to be run in analyzer mode (-a) to support this configuration. - - - 1 - 2 - 3 - +--------------4 receiving-side board - S0-bus +--|--------------5 in computer (jack for - to analyze | | 6 cable to passive controller) - 8 | | 7 - 7 | | 8 - transmit - 6------------|--|--+ - receive - 5------------+ | | - receive + 4---------------+ | - transmit + 3------------+ | - 2 | | 1 - 1 | | 2 - plug into | | 3 - S0 bus +-----|-----------4 transmitting-side board - +-----------5 in computer (jack for - 6 cable to passive controller) - 7 - 8 - - - - RJ-45 plug RJ-45 jack - view from the front view from the front - cable goes out to the rear - - /--------- / ---------- - | 87654321 | | 12345678 | - |__ __|/ |/_ /_| - |____|/ |/___| |
