User manual
DEFINITY ECS Release 8.2 Maintenance for R8.2csi 
555-233-119  Issue 1
April 2000
Maintenance Objects 
3-424DATA-CHL (Data Channel) 
3
DATA-CHL (Data Channel)
The four Data Channels (DATA-CHLs) provide a data communications interface 
that allows data terminal equipment connected to port circuit packs to 
communicate with software applications running on the system. Each DATA-CHL 
represents a dial-up/dial-out asynchronous communications port that interfaces 
to the TDM Bus. Data is transported between the terminal equipment and the 
software application over the DATA-CHL. Data Channels may be used to support 
the following features and functions:
■ Establishment of a connection over which to log CDR data to a printer or 
other storage unit. This connection is called PRI-CDR/SEC-CDR (PRI-CDR 
Link).
■ Establishment of connections over which to log PMS, Automatic Wakeup, 
and Emergency Access to Attendant data to a Journal printer. This 
connection is called PMS-PRINT/JRNL-PRNT (PMS Printer Link).
■ Establishment of a connection to a customer-owned PMS. This connection 
is called the PMS-LINK.
■ Establishment of a connection to system printer. This connection is called 
the System Printer Link (SYS-PRNT).
■ Establishment of connection(s) for up to two secondary administration 
terminals.
■ Saving announcements from the ANN-BD (Announcement Circuit Pack).
■ Restoring announcements to the ANN-BD (Announcement Circuit Pack).
■ Maintenance testing of the DATA-CHLs.
From the viewpoint of administration, the four DATA-CHLs on the TN798 
Processor circuit pack are numbered 01 through 04. Each DATA-CHL may be 
assigned a unique extension using the 
add data-module [ <ext> | next ]
MO Name (in 
Alarm Log)
Alarm 
Level Initial Command to Run Full Name of MO
DATA-CHL
1
1. The test data-module <ext> long command drops all sessions on all of the Data Channels. Refer 
to Data Channel Reset Test (#107).
 MINOR  test data-module l <ext> Data Channel 
DATA-CHL
2
2. <ext> is the extension of the Data Channel to be tested. The extension can be determined by 
issuing the list data-module command from the administration terminal. The resulting form 
provides a mapping from the 1CXXpp designation of the Data Channel to its corresponding 
extension, where pp indicates which one of the four Data Channels is alarmed (01, 02, 03, or 04) 
and C indicates the carrier on which the alarmed Data Channel resides.
 WARNING   test data-module sh <ext>
3
3. The test data-module <ext> long command drops all sessions on all of the Data Channels. Refer 
to Data Channel Reset Test (#107).
Data Channel 










