Isdn-Trk (Ds1 Isdn Trunk) - Avaya G350 Maintenance Manual

ISDN-TRK (DS1 ISDN Trunk)

Table 86: ISDN-TRK (DS1 ISDN Trunk)
MO Name (in
Alarm Log)
ISDN-TRK**
ISDN-TRK
ISDN-TRK
Note: For Avaya G350 Media Gateway systems you must consult local records for the location
and designation of the equipment rack where the G350 is mounted.
For additional repair information, see also DS1-BD for TN767 ports and MM710.
*
A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by the
**
set options command.
NOTE:
Many trunk problems are caused by incorrect settings of parameters on the trunk group
administration form. Settings must be compatible with the local environment and with
parameter settings on the far-end. See "Administrator's Guide for Avaya Communication
Manager, 555-233-506", for the correct settings for administrable timers and other
parameters on a country-by-country basis.
NOTE:
Throughout this section, the term DS1 refers to the MM710 Media Module.
A DS1 ISDN trunk is a 64 Kbps bearer channel used to transmit digitized voice or data traffic. These
trunks, or B-channels, use a separate channel, the D-channel for call-control signaling. This mode of
operation is known as out-of-band signaling, as opposed to in-band robbed-bit signaling, in which
signaling is carried in the same channel as the voice or data traffic. One D-channel, or ISDN signaling
link (ISDN-LNK), carries signaling messages for several B-channels, forming an ISDN signaling group
(ISDN-SGR).
A B-channel may be a port on a MM710 series DS1 Media Module.
Two types of DS1 interfaces exist:
•
24 DS0 channels on a 1.544 Mbps link
•
31 DS0 channels + 1 framing channel on a 2.048 Mbps link
On 24-channel interfaces, any of the first 23 ports on the DS1 Media Modules can be a B-channel. On the
MM710, the 24th port may be used as a B-channel or as a D-channel depending on the type of ISDN-PRI
signaling group (FAS or NFAS) implemented on the Media Module. For more details, refer to
ISDN-SGR. The signaling for these B-channels is done over a D-channel located on a MM710.
Maintenance of the Avaya G350 Media Gateway
June 2004
Avaya Communication Manager controlled maintenance
Alarm Level Initial Command to Run*
MAJOR* test port GGGVSpp l
MINOR test port GGGVSpp l
WARNING test port GGGVSpp l
ISDN-TRK (DS1 ISDN Trunk)
Full Name of MO
DS1 ISDN Trunk
DS1 ISDN Trunk
DS1 ISDN Trunk
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