Table 6: MSDL D-channel commands
Command Action
DIS LLB x Disable local loopback mode on MSDL DCH x.
DIS RLB x Disable remote loopback mode on MSDL DCH x.
DIS TEST x Disable TEST mode on MSDL DCH x.
ENL LLB x Enable local loopback mode on MSDL DCH x.
ENL RLB x Enable remote loopback mode on MSDL DCH x
ENL TEST x Enable TEST mode on MSDL DCH x
PCON DCH x Print configuration parameters on MSDL DCH x
PTRF DCH x Print traffic report on MSDL DCH x
TEST LLB x Start local loopback test on MSDL DCH x
TEST RLB x Start remote loopback test on MSDL DCH x
ENBL MSDL x Enable MSDL device number x
Maintenance service messages
Service messages provide near-end and far-end switch status. Both service and service
acknowledge messages are supported on PRI B-channels and ISDN Signaling Link (ISL)
channels. In addition, service and service acknowledge messages for D-channels are
supported between systems only
. These messages are used for backup D-channel and D-
channel sanity polling. The status may be in-service and out-of-service.
Service and service acknowledge messages for B-channels and ISL channels are supported
between systems.
Service and service acknowledge messages for B-channels and PRI are supported only
between systems, and between systems and supported Central Office connectivities. The
following are the three channel statuses reported by the service and service acknowledge
messages for B-channels and ISL channels:
• in-service
• maintenance
• out-of-service
Near-end and far-end subcategories are defined for each maintenance status. See
Table 7:
Maintenance message status on page
29 for possible combinations of near and far-end
status and the channel capability for each status. When the near-end status and far-end status
do not match, the more severe maintenance status takes effect over the less severe
maintenance status.
Quick reference to PRI operations
28 ISDN Primary Rate Interface Maintenance November 2011
Comments? infodev@avaya.com
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