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DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-931PE-BCHL (PRI Endpoint Port)
10
■ Pending States (PEND)
If the near-end is expecting a timed response from the far-end for a
request to change the service state of a port, the state of the port reflects a
Pending state. For example, if the port is out-of-service/far-end and if an
in-service message is sent to the far-end, the service state of the port is
OOS/FE-PEND/INS (that is, out-of-service/far-end-Pending/in-service).
The far-end has a certain amount of time to respond to the message. The
service state reflects this pending state until the timer expires.
The following diagram of the PRI Endpoint Port service states shows the common
progression from one service state to another and the event that caused the
change of state.
Figure 10-77. Common Progressions in Service States
CRAFT BUSYOUT OF
SIGNALING LINK
"BUSYOUT LINK LINK-NO",
OR TRANSIENT STATE FOR
CRAFT-DEMANDED LONG
TEST OF THE PORT.
CRAFT RELEASE
OF SIGNALING LINK
IF D-CHANNEL
CONTROLLING THE
B-CHANNEL IS UP,
SEND A MESSAGE
REQUESTING
TRANSITION
TO IN-SERVICE
D-CHANNEL HAS BEEN
DOWN FOR AT LEAST
90 SECONDS.
FAILED TO
RECEIVE REPLY
FROM FAR END.
MTCE WILL
PERIODICALLY
TRY TO RESEND
THE MESSAGE
RECEIVED
ACKNOWLEDGEMENT
FROM THE FAR END
RECEIVED
ACKNOWLEDGEMENT
FROM THE FAR END
FAILED TO
RECEIVE REPLY
FROM FAR END.
MTCE WILL
PERIODICALLY
TRY TO RESEND
THE MESSAGE
ADMINISTER
B-CHANNEL AS
MEMBER OF A
PRI ENDPOINT
OUT-OF-
SERVICE
NEAR END
OUT-OF-
SERVICE
FAR END
OUT-OF-
SERVICE
FAR END
PENDING
IN-SERVICE
IN-SERVICE
MAINTENANCE
NEAR END
MAINTENANCE
FAR END
MAINTENANCE
FAR END
PENDING
IN-SERVICE
CRAFT RELEASE OF
A B-CHANNEL OR
NEAR-END LINK
PROBLEM (PI-LINK OR
SYS-LINK) CLEARS UP
IF D-CHANNEL
CONTROLLING THE
B-CHANNEL IS UP,
SEND A MESSAGE
REQUESTING
TRANSITION
TO IN-SERVICE
CRAFT BUSYOUT OF B-CHANNEL
BUSYOUT PORT/PRI-ENDPOINT,
LINK PROBLEM AT NEAR END
(PI-LINK OR SYS-LINK),
DS1 BOARD NOT INSERTED,
OR DS1 BOARD FAILURE.