User guide

30
ISDN Quick References
(NTP 297-2401-501, ISDN BRI Maintenance Guide)
Note: See ISDN BRI Troubleshooting for PM180 and PM189 logs and
ISDN Q931 Procedures for Traces on BRI and PRI in this QRG.
Note: See “TRAVER Commands” within this QRG for ISDN TRAVER
information and examples.
ISDN Query Commands
>QLT The QLT command queries a logical terminal.
>QDCH The QDCH command displays D-channel handler (DCH)
connections or ISDN service group (ISG) information. The
following connection types are supported:
• LTID - specifies the number of LTIDs on a DCH.
• BRA - specifies connection info. for BRA channels.
• Bd - specifies Bd channels connection information.
>QBB The QBB command displays all relevant information asso-
ciated with ISDN B-channel connections.
>QLOOP An LTPISDN level command that displays all LTIDs, DNs,
and TEIs associated with a posted ISDN line. For B-chan-
nel packet terminals, the specific B channel is displayed
rather than the TEI.
>
QCOUNTS
The QCOUNTS command is used to display and reset
Layer 2 and Layer 3 protocol and protocol abnormality
counts for a particular X.25 LTID or X.75 interface. The
command provides an instantaneous snap-shot of protocol
performance associated with a logical terminal, X.75 trunk,
or specific XSG.
>
QIT
The QIT command displays packet provisioning informa-
tion for terminals on the DPN packet handler (LTIDs in
PHINFO). QIT is the primary command for
packet-switched service with the DPN PH. Use the QLT
command for circuit-switched service.
>
QPHF
The QPHF command displays information about XSGs,
channels, DNs, PVCs, and X.75 links.
>
QSCONN
The QSCONN command displays information on special
connections for ISDN XPMs. With the DMS packet han-
dler, QSCONN can also be used to identify special connec-
tions associated with a specific XSG, and to display all
special connections through the network.
>
QX75
The QX75 command displays information for the specified
XSG that is associated with the X75 special connections to
the DMS packet handler.
ISDN OM Groups
BCAPCG provides registers to count the number of unsuccessful call
attempts for IBN and ISDN lines due to bearer capability
incompatibility for a particular customer group.
BCAPOF same as OM group above, except counts for the whole
office. It also measures synonym directory number activity.
ISGBRA provides registers to count the number of frames transmitted
& received, number of frames discarded, and number of
frames with CRC errors on a BRI DCH channel basis.
ISGBD provides registers to count the number of frames transmitted
& received, number of frames discarded, and number of
frames with CRC errors for Bd channels on a per-channel
basis. Useful with Packet Service.
ISGCPU provides registers to measure the ISG's CPU occupancy on
a per-DCH basis.
ISGOVLD provides registers to measure the degree to which an ISG is
overloaded on a per-DCH basis.
CPICG provides registers to count call progress activity events.
LMD can be very useful in finding out whether an ISDN PM is
under provisioned with DS30-A links to the LCME. Rec-
ommend using ORIGBLK and TERMBLK OM registers.
XPMLMK records one-way and two-way link blockage and usage for
all XPMs with switched lines. Use PSLBLK and CSLBLK.
ISDN Office Engineering (OFCENG) Table Parameters
Used by Bearer Capability Routing:
NUM_RC_EXT_BLKS
DEFAULT_BEARER_CAPABILITY Recommend set to SPEECH.
BC_CHECKING_SCOPE
Used by Flexible Calling:
MAX_NO_OF_3_PORTS_IN_CHAIN
MAX_NO_MEDIUM_FTR_DATA_BLKS
Other OFCENG Table ISDN related Parameters:
ISDN_DPN_PH_GENERIC
ISDN_NET_1A_INTERWORKING
ISDN parameters continue on the next page.