DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1145PDATA-PT (Packet Data Line Port)
9
Data Applications and System Port Connectivity
As part of each data application, the SPE connects itself to the application
device through a system port. The application device may be an external
terminal, printer, or data-module, or it may be circuitry internal to the switch, as is
the case for the Announcement Circuit pack data-module used to save and
restore recorded announcements. The figure below is an example of a system
port connection using a second Data Line circuit pack (DAT-LN-BD) port to
provide dial-in access for a remote terminal.
A feature may not have a permanent connection to a system port. For example,
the announcement feature uses the system port when it is saving or restoring
announcement data to or from the Mass Storage System. The rest of the time it
does not use a system port. This makes troubleshooting these links more difficult,
since the symptoms may appear on one side of the link while the problem is on
the other. If the link is no longer up, there is no way to determine which system
port experienced the problem.
Figure 9-68. Typical System Port Connection
Printer,
CDR,
Data
Terminal,
or
Dial-up
G3-MT
M3
Packet Bus
PKT
INT
TN1655
Other SPE
Components
SPE Complex
Processor Bus
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Processor Bus
Other SPE
Components
SPE Complex
PKT
INT
TN1655
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TDM Bus
DAT-LINE
TN726B
DAT-LINE
TN726B
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PDATA
TN553
EIA
EIA
M2
(if duplicated)
Standby
Active
