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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Object Repair Procedures
Page 10-1636VC-BD
10
VC-BD
!
CAUTION:
If the TN788 Voice Conditioner Circuit Pack (VC-BD) is not Vintage 2 or
later, it must be replaced.
The TN788 Voice Conditioner Circuit Pack (VC-BD) is a service circuit pack that
provides conditioning for the audio signals from multimedia equipment based on
the CCITT H.221 standard. The TN788 transcodes, gain adjusts, and bridges the
audio bit streams demultiplexed by the TN787 (MMI) circuit pack and transmits
encoded, exclusive audio conference sums onto the TDM bus so that the MMI
can multiplex the audio, video, and data streams for the H.221 endpoints.
Error Log Entries and Test to Clear Values
1. Where P is the port network number (1 for PPN and 2 or 3 for EPN); C is the carrier
designation (for example, A, B, C, or D); and SS is the address of the slot in the carrier
where the circuit pack is located (for example, 01, 02, ...).
2. Refer to XXX-BD (Common Port Board) Maintenance documentation.
MO Name (in
Alarm Log)
Alarm
Level
Initial Command to
Run
1
Full Name of MO
VC-BD MAJOR test board PCSS l r# Voice Conditioner Circuit Pack
VC-BD MINOR test board PCSS l r# Voice Conditioner Circuit Pack
VC-BD WARNING
2
test board PCSS s r# Voice Conditioner Circuit Pack
Table 10-478. VC-BD Error Log Entries
Error
Type
Aux
Data Associated Test
Alarm
Level
On/Off
Board Test to Clear Value
0
1
0 Any Any Any test board PCSS sh r 1
1 (a) Any None MIN ON
18 (b) 0 busyout board PCSS WNG OFF release board PCSS
257 (c) Any Control Channel Loop
Test (#52)
MIN ON test board PCSS r 20
513 (d) 4352 to
4357
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