Mike's PBX Cookbook

Enabling an MSDL

LD 96 is used to test and maintain D-channel links.

From Release 18, D-channels can also reside on Multi-purpose Serial Data Link (MSDL) cards: 4 ports for ISDN Primary Rate D-channel (DCH) and Application Module Link (AML). The MSDL commands listed in LD48 can also be used in LD96.

See below for a summary of MSDL commands.

TTY Output:

Example, enabling MSDL 6 (if the version numbers are different, an automatic download will commence):

>ld 96
DCH000
.enl msdl 6

DOWNLOADING BASE
REASON: VERSION MISMATCH

OVL021 IDLE

SDL100 BUSY

OVL021 BKGD

SDL100 BUSY
........................
SDL000 MSDL 6, VERSION 70, MAINT MODE.


MSDL108 6 PRIE

DOWNLOADING PRIE
REASON: NONE ON CARD
..............................
......................
SDL000 PRIE (MSDL 6), VERSION 80, MAINT MODE.

MSDL108 6 GER DATA

DOWNLOADING GER DATA
REASON: NONE ON CARD
..
SDL000 GER1 ( MSDL 6), VERSION 50, MAINT MODE.

OK
.

To force a firmware download to the MSDL, ie: with new hardware, a configuration change, or when trying to correct D channel mismatch problems, always use the 'FDL' switch - and "watch for the dots" (full-stops), which should flow nicely/evenly during the download process:

>ld 96
DCH000
.enl msdl 6 fdl

DOWNLOADING BASE
REASON: FORCED

OVL021 IDLE

SDL100 BUSY
........................
SDL000 MSDL 6, VERSION 70, MAINT MODE.


DOWNLOADING PRIE
REASON: FORCED
..............................
..
SDL000 PRIE (MSDL 6), VERSION 80, MAINT MODE.
.
DOWNLOADING GER DATA
REASON: FORCED
..
SDL000 GER1 ( MSDL 6), VERSION 50, MAINT MODE.

OK
.

MSDL commands:

The LD 96 MSDL commands are listed below, x is the MSDL device number (defined by ADAN: DNUM in LD 17).
These commands are also provided in Input/Output Diagnostic (LD 37) and Link Diagnostic (LD 48).

DIS MSDL x (ALL)Disable MSDL Device
ENL MSDL x (FDL, ALL)Enable  MSDL Device (FDL to 'force download' required loadware)
RST MSDL xPower on Reset  MSDL Device (must be in MAN DSBL state)
STAT MSDL (x) (FULL)Get MSDL Status (use to list all MSDL cards in system)
SLFT MSDL xExecute a self-test on MSDL device x

The LD 96 MSDL D-channel commands are listed below, x is the DCH number (defined by ADAN: DCH in LD 17).

DIS LLB xDisable local loop back mode on MSDL DCH x
DIS RLB xDisable remote loop back mode on MSDL DCH x
DIS TEST xDisable TEST mode on MSDL DCH x
DLIF DCH xx FDLForce download a PRI interface table.
ENL LLB xEnable local loop back mode on MSDL DCH x
ENL RLB xEnable remote loop back mode on MSDL DCH x
ENL TEST xEnable TEST mode on MSDL DCH x
MAP DCH xDisplay physical card and port settings for D-channels. Eg.:
MAP DCH
DCH 15 DCHI 07
DCH 23 MSDL 09 PORT 2
PCON DCH xPrint configuration parameters on MSDL DCH x
PMES DCH xPrint incoming layer 3 messages on MSDL DCH x
PTRF DCH xPrint traffic report on MSDL DCH x
STAT DCH xGet the present status of D-channel x
TEST LLB xStart local loop back test on MSDL DCH x
TEST RLB xStart remote loop back test on MSDL DCH x
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