DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-958ISDN-TRK (DS1 ISDN Trunk)
9
■ Maintenance/Near-End (MTC/NE)
The trunk (B-channel) is in this state if the signaling channel (ISDN-LNK) is
busied out by system technician. The trunk (B-channel) is also temporarily
in this state if system technician has issued a
test trunk
trunk group/trunk
member long
command. This command will execute the ISDN-PRI test
call. This test will change the state of the trunk member to MTC/NE for the
duration of the test unless a call request comes in from the far-end. In that
case, the test would abort. Note that transitions into MTC/NE do not drop
stable calls. In this state, the B-Channel is not usable for new incoming or
outgoing calls.
■ Pending States
In addition to one of the above components, the service state may have a
pending
component, indicating that the switch is waiting for a reply from
the far-end. These service states remain in effect until either a response is
received or the allotted waiting time expires.
— Pending-in-Service
The near-end is waiting for a response from the far-end to a
B-channel maintenance message requesting that the B-channel be
transitioned to in-service.
— Pending-Maintenance
This state is supported only by systems using country protocol 1
(including US). The near-end is waiting for a response from the
far-end to a maintenance message requesting that the B-channel
be transitioned to the maintenance service state.
■ Call Activity States
The in-service service state also has a call activity component.
—Active
A call is connected over the B-channel (for example,
in-service/active
).
—Idle
There is no call currently on the B-channel (for example,
in-service/idle
).
