DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-530DIOD-TRK (DIOD Trunk)
9
DIOD-TRK (DIOD Trunk)
NOTE:
Many trunk problems are caused by incorrect setting s of parameters on the
trunk group administra tion form. Settings must be comp atible with the local
environment and with parameter setting s on the far-end. Refer to DEFINITY
Communications System Generic 3 V2 Implementation, 555-230- 653 for
information on how to administer trunks. The App lication Notes section of
that book shows the correct settings for administrable timers and other
parameters on a country-b y-country basis.
Direct inward and outward d ial (DIOD) trunks are 2-wire analog lines to the CO
which support the following services:
■Both incoming and outg oing CO calls
■DID trunk
■DID trunk and 1-way outgoing DIOD
TN429 DIOD trunk circuit packs p rovide eight ports for loop -start CO trunks and
serve as an interface between the 2 -wire analog CO line and the 4-wire TDM bus
on the switch.

Loop Start Operation

Idle State: Tip = ground, Ring = CO Battery

Outgoing Call

1. PBX Off-Hook (Seize Message): Closes the Tip-Ring Loop CO Response:
DC loop current + Dial tone
MO Name (in
Alarm Log) Alarm Level Initial Command to Run1
1.
UU
is the universal cabine t number (1 for PPN, 2 -44 for EPNs).
C
is the carrier designation (A,
B, C, D, or E).
SS
is the number of the slot in which the circuit pack resides (01 to 21).
pp
is
the two digit port number (01, 02, ...).
Full Name of MO
DIOD-TRK MAJOR2
2. A MAJOR alarm on a trunk indicates that alarms on these trunks are not downgraded by the
set options command and that at least 75 percent of the trunks in this trunk group are
alarmed.
test port
UUCSSpp
lDIOD Trunk
DIOD-TRK MINOR test port
UUCSSpp
lDIOD Trunk
DIOD-TRK WARNING test port
UUCSSpp
lDIOD Trunk