Avaya 03-300430 User Manual

Note:

Many 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. Refer to Administrator 
Guide for Avaya Communication Manager, 03-300509 for information on how to 
administer trunks. The Application Notes section of that book shows the correct 
settings for administrable timers and other parameters on a country-by-country 
basis.

A DS1 Direct Inward Outward Dialing (DIOD) trunk provides a link for digitized voice or data 
communications between the system and a central office switch. There are two types of DS1 
interfaces:

●

24 DS0 channels on a 1.544-Mbps link

●

31 DS0 channels + 1 framing channel on a 2.048-Mbps link

Note:

32-channel mode is supported only on TN464C and higher suffix circuit packs 
and beginning with G3r V2 systems.

The DS1-DIOD MO monitors and maintains a DIOD trunk port on a TN464 UDS1 Interface 
circuit pack. See 

on page 2374 for more information 

about this circuit pack. The DS1 circuit pack supports low-level CO trunk signaling interfaces for 
both ground-start and loop-start trunks. This maintenance strategy covers the in-line errors log, 
initialization tests, periodic tests, scheduled tests, demand tests, and alarm resolution and 
escalation.

DIOD-DS1

MAJ

1

1. A Major alarm on a trunk indicates that alarms on these trunks are not downgraded by set 

options and that at least 75 percent of the trunks in this trunk group are alarmed.

test trunk grp#/mem# l

DS1 DIOD Trunk

DIOD-DS1

MIN

test trunk grp#/mem# l

DS1 DIOD Trunk

DIOD-DS1

WRN

test trunk grp#/mem# 

DS1 DIOD Trunk