Avaya S8700 Series, Maintenance Manual

Page: 2567 / 2618

VC-BD
Issue 1 May 2002 8-1845 555-233-143
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
MO’s Name
(in Alarm
Log)
Alarm
Level Initial SAT Command
to Run
1
1. Where UU is the universal cabinet number (1–64 for ATM PNC, 1–44 for CSS PNC); C is the
carrier designation (A, B, C, D, or E); SS is the address of the slot in the carrier where the circuit
pack resides (01–21); and pp is the 2-digit port number (01, 02, 03, ...).
Full Name of MO
VC-BD MAJOR test board UUCSS l r# Voice Conditioner circuit pack
VC-BD MINOR test board UUCSS l r# Voice Conditioner circuit pack
VC-BD WARNING
2
2. See ‘‘XXX-BD (Common Port Circuit Pack)’’ on page 8-1872 .
test board UUCSS s r# Voice Conditioner circuit pack
Table 8-706. 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 UUCSS sh r 1
1 (a) Any None MINOR ON
18 (b) 0 busyout board UUCSS WARNING OFF release board UUCSS
257 (c) Any Control Channel Loop
test (#52) MINOR ON test board UUCSS r 20
513 (d) 4352
to
4357
769 (e) 4358
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