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 mod es which are covered by
different maintenance objec ts:
Configurations and Maintenance
In the following discussion, t he general term data module refers to MPDMs,
MTDMs, and DAs. The PBX loop or digital link between a d ata module and the
Digital Line port sup ports two logical infor mation channels and one signaling
channel. Data modules gene rally use the primary information channel for d ata
communications and the signaling channel for d ialing and call sup ervision. With
4-wire DCP, the secondary information channel can be used to supp ort a second
data module on a shared p ort.
Table 9-461. Stand-Alone DCP Data Modules
Type N ame1
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 th u s called m o dular dat a m odules. B oth type s are su ppo rted by th e t ests des cribed 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 IDT1/21 and optional data terminal
1. IDT1/2: Italtel Digital Telephone, Model 1 or 2 (also known as Digital Telephones TD7210 and
TD7206).
DIG-LINE