Demand test descriptions and error codes - Avaya Support

Only 2-wire Italtel Digital Telephone Models 1 and 2 (IDT1/2) or DAs can directly connect to a
TN2136 circuit pack. Avaya DCP (4-wire) digital voice terminals and data modules can connect
to these circuit packs via Italtel’s 2/4-wire adapter. DAs operate in either of 2 modes, and are
covered by different MOs:
Service States
DA Mode Administered as: Endpoint MO
Standalone PDM Data endpoint only PDMODULE
Linked DTDM IDT1/2 and optional data terminal DIG-LINE
Digital line maintenance interacts with digital line circuit pack (DIG-BD), or with digital line media
module (MG-DCP) maintenance. The health of the digital-line circuit pack or media module can
affect the results of DIG-LINE testing. Keep this in mind when investigating digital-line
problems.
It is sometimes important to know the service state of a station. These service states apply to
digital-line stations:
Out-of-Service state The port, and thus the station, have been removed from service.
The busyout command puts the port in the out-of-service state.
Ready-for-Service state The port on the circuit pack or media module has been put into
service, but the voice terminal has not yet established signaling
communications with the port.
In-Service state The voice terminal has established signaling communications with
the port, and the system is ready to process calls to and from that
station. A terminal in the ready-for-service state will progress to the
in-service state if it is functioning normally. It can also be forced
into the in-service state by going off-hook.
Downloading Terminal Parameters
This section explains how maintenance software interacts with terminal parameter
downloading.
320 Maintenance Alarms for Communication Manager, Media Gateways and Servers