DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1161PDMODULE (Processor Data Module) TDMODULE (Trunk Data Module)
9
Stand-Alone DCP Data Modules
There are two types of stand-alone DCP data modules:
Data Adapters
TN2136 circuit packs use IDCP signaling and a DAA2 Data Adaptor (DA) to
interface to DTE. DAs can operate in either of two modes which are covered by
different maintenance objects:
Configurations and Maintenance
In the following discussion, the general term data module refers to MPDMs,
MTDMs, and DAs. The PBX loop or digital link between a data module and the
Digital Line port supports two logical information channels and one signaling
channel. Data modules generally use the primary information channel for data
communications and the signaling channel for dialing and call supervision. With
4-wire DCP, the secondary information channel can be used to support a second
data module on a shared port.
Table 9-461. Stand-Alone DCP Data Modules
Typ e Name
1
1. Early versions of these data modules were referred to as PDMs and TDMs, respectively. Later
models are designed to provide a variety of interfaces by using interchangeable modules and
are thus called modular data modules. Both types are supported by the tests described in this
section
Interfaces to:
MPDM Modular Processor
Data Module
DTE (data terminals, host computers, printers, etc)
MTDM Modular Trunk Data
Module
DCE (modems, data modules, etc)
Table 9-462. Data Adaptor Modes
DA Mode Administered as: Endpoint
MaintenanceOb
ject
Stand-Alone PDM data endpoint only PDMODULE
Linked DTDM IDT1/2
1
and optional data terminal
1. IDT1/2: Italtel Digital Telephone, Model 1 or 2 (also known as Digital Telephones TD7210 and
TD7206).
DIG-LINE
