inst_h3.fm
P31003-H3550-S403-4-7620, 02/05
HiPath 3000 V5.0, HiPath 5000 V5.0, Service Manual
4-45
Installing HiPath 3000
Installing HiPath 3800
4.2.5.6 Distribution of the PCM Highway
HiPath 3800 provides PCM highway bundles with 2 x 4 PCM highways for each peripheral
board slot. There are 32 time-division multiplex channels available for each PCM highway.
Blockages occur if these are busy. The system cannot execute any more call requests.
To guarantee that the system operates without blocking, make sure when performing configu-
ration that the boards on a PCM segment do not require more than the number of time-division
multiplex channels available. The following figures show the PCM highways for both system
cabinets of the HiPath 3800.
Basic cabinet: PCM highways
The basic cabinet provides two PCM highway bundles with 2 x 4 PCM highways each. There
are 32 time-division multiplex channels available for each PCM highway.
The PCM highway bundles in the basic cabinet are used by peripheral boards according to the
following rules:
● Single-cabinet system (basic cabinet only)
With the exception of boards DIUN2, DIU2U (for U.S. only), IVMNL, IVMN8 and STMI2, the
peripheral boards only use the PCM highways of bundle A:
– PCM segment for board slots 1 – 5 = 128 time-division multiplex channels (four PCM
highways)
Figure 4-26 HiPath 3800 - PCM Highways in the Basic Cabinet
PCM highway bundle A
with 2 x 4 PCM highways
PCM highway bundle F
with 2 x 4 PCM highways
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