Server Alarms - Avaya Support

Communication Manager Maintenance Object Repair Procedures
ISDN-TRK (DS1 ISDN Trunk)
Note: Many
MO Name in Log Alarm Level Initial Command to Run Full Name of
MO
ISDN-TRK MAJ 1
MIN
WRN test port location
1. A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by the set
options.
Note:
trunk problems are caused by incorrect settings of parameters on the trunk
group administration screen. Settings must be compatible with the local
environment and with parameter settings on the far end. See Administrator Guide
for Avaya Communication Manager, 03-300509. Refer to your Avaya
representative for the correct settings for administrable timers and other
parameters on a country-by-country basis.
Note:
Note: See the figures in the ISDN-SGR (ISDN-PRI Signaling Group) maintenance
object for an illustration of the principles described below. Throughout this
section, the general term DS1 circuit pack refers to TN464 and TN767 series
circuit packs for systems supporting circuit packs and DS1 Interface Media
Modules for systems supporting media modules.
For additional repair information, see also DS1-BD (DS1 Interface Circuit Pack) for TN767
ports, UDS1-BD (UDS1 Interface Circuit Pack) for TN464C or higher suffix ports, and MG-DS1
(DS1 Interface Media Module) for Media Module ports.
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-PLK), carries signaling messages for several
B-Channels, forming an ISDN signaling group (ISDN-SGR).
A B-Channel may be a port on a TN464 series UDS1 circuit pack, a TN767 series DS1 Interface
circuit pack, or an DS1 Interface 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
test port location long DS1 ISDN Trunk
928 Maintenance Alarms for Avaya Communication Manager, Media Gateways and Servers