DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127 Issue 1
August 1997
Maintenance Object Repair Procedures
Page10-1523VC-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 en dpoints.

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 des ignation
(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 Run1Full 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 WARNING2test board PCSS s r# Voice Conditioner Circuit Pack
Table 10-512. VC-BD Error Log Entries
Error
Type Aux
Data Associated Test Alarm
Level On/Off
Board Test to Clear Val ue
010 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
769 (e) 4358
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