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Maintenance Objects
1896
Issue 5 October 2002
VC-LEV (Voice Conditioner
DSP Port Level)
Enable the MMCH feature on the System-Parameters Customer-Options form
before changing the fields.
The Voice Conditioner (VC) Port Level MO monitors VC efficiency by tracking the
number of VC ports that are in-service, and then comparing that number with the
value entered in the VC field on the System-Parameters Maintenance form. This
VCs
field is located under the Minimum Maintenance Thresholds section. The
VCs
field contains the minimum number of VC ports needed for the Multimedia Call
Handling (MMCH) feature, and is an administrable field. The
VCs
field must
contain a number between 0 and 126, and is entered by the system administrator.
The MMCH feature must be enabled on the System-Parameters
Customer-Options form before the
VCs
field can be changed to a number greater
than 0. For example, administering 8 in that field means 1 circuit pack. The
algorithm for determining that a low level of VC resources exists uses the number
entered in the
VCs
field, and the number of VCs that are in-service in the system.
Each VC circuit pack contains 16 physical ports: 8 ports are reserved for
VC-DSPPT ports, and the remaining 8 ports are designated as VC-SUMPT ports.
The 8 DSP ports are made up of 4 encoder and 4 decoder resources that encode
and decode audio formats. Thus, one VC circuit pack is required for every 8 ports
of MMCH port capacity. If the number of in-service VC ports falls below the MMCH
port capacity (value entered on the System-Parameters Maintenance form under
the Minimum Maintenance Thresholds section and in the
VCs
field), a VEC-LEV
error is logged. If this outage continues for 15 minutes a MAJOR alarm is raised.
Resolving VC-LEV Errors/Alarms
VC ports are a key part of the MMCH feature, any loss in the number of ports
available for use degrades the MMCH customer-defined service level.
If a VC circuit pack or port is busied out using the busyout board or busyout
port command, these out-of-service ports are not included in the VC level
calculation, thus allowing a technician to busy out a VC circuit pack for
maintenance reasons without causing a MAJOR alarm to be raised.
NOTE:
When diagnosing a VC-LEV problem, resolve any alarms raised against
VC-BD or VC-DSPPT maintenance objects. Clearing VC-BD or VC-DSPPT
alarms may clear the VC-LEV alarm.
MO Name (in
Alarm Log)
Alarm
Level Initial Command to Run Full Name of MO
VC-LEV MAJOR See ‘‘Resolving VC-LEV Errors/Alarms’’ VC-LEV