Lucent Technologies Release 7 User Manual
DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-162
ATM-DCH (ATM D-Channel Port)
9
ATM-DCH (ATM D-Channel Port)
NOTE:
TN230x circuit packs are not interchangeable. Always replace an ATM
circuit pack with the same type.
circuit pack with the same type.
This MO (ATM-DCH) utilizes the existing ISDN-PLK or D-channel maintenance
strategy with modifications. The ATM circuit pack can be administered for up to 8
Circuit Emulation Service (CES) or signaling groups, each with its own
D-channel, as opposed to one D-channel for an entire DS1 circuit pack.
strategy with modifications. The ATM circuit pack can be administered for up to 8
Circuit Emulation Service (CES) or signaling groups, each with its own
D-channel, as opposed to one D-channel for an entire DS1 circuit pack.
NOTE:
Due to the dual personalities and the number of D channels the ATM board
can possess, the in-line errors and signaling port LAN loopback test have
been moved to the maintenance object ATM-TRK. When an in-line error is
sent due to PACKET BUS errors, the ATM circuit pack maintenance object
receives the error, not ATM-DCH.
can possess, the in-line errors and signaling port LAN loopback test have
been moved to the maintenance object ATM-TRK. When an in-line error is
sent due to PACKET BUS errors, the ATM circuit pack maintenance object
receives the error, not ATM-DCH.
The D-channel ISDN-PRI interface, which is emulated for ATM-CES, uses
out-of-band signaling to transmit control messages between two endpoints. User
information or bearer channels (B-channels) carry digitized voice and digital
data and are assigned to DS1 ISDN trunks or PRI endpoints. Call control
signaling for the B-channels is combined and carried over the separate
ISDN-PRI Signaling Link Port D-channel.
out-of-band signaling to transmit control messages between two endpoints. User
information or bearer channels (B-channels) carry digitized voice and digital
data and are assigned to DS1 ISDN trunks or PRI endpoints. Call control
signaling for the B-channels is combined and carried over the separate
ISDN-PRI Signaling Link Port D-channel.
Problems with ATM-DCH affects all of the associated B-channels, since call
control signaling cannot reach the far-end switch or terminal adapter. Stable
calls may remain operational, but no new calls can be made. ATM-DCH in turn
depends on the TN230X ATM Trunk circuit pack it resides on and the packet bus
which provides the link to the processor.
control signaling cannot reach the far-end switch or terminal adapter. Stable
calls may remain operational, but no new calls can be made. ATM-DCH in turn
depends on the TN230X ATM Trunk circuit pack it resides on and the packet bus
which provides the link to the processor.
When working ATM-DCH alarms or errors, also investigate
■
‘‘ATM-TRK (Circuit Emulation Service Circuit Pack)’’
■
PKT-BUS
MO Name (in
Alarm Log)
Alarm Log)
Alarm Level
Initial System Technician
Command to Run
Command to Run
1
1.
pp is administered as a port in the range of 9 through 32.
Full Name of MO
ATM-DCH
2
2.
‘‘ATM-TRK (Circuit Emulation Service Circuit Pack)’’
.
MINOR
test port
UUCSSpp l
ATM D-Channel
ATM-DCH
WARNING
test port
UUCSSpp sh
ATM D-Channel