SILCs/UILCs
• The cards are installed in the Core/Network Module or the IPE Module for all system
options. Refer to the LD 20 printout to identify modules with unused peripheral card
slots.
• In each module, install a maximum of 15 SILCs, or eight UILCs combined with any other
seven peripheral cards (including SILCs). If 15 SILCs are installed, the remaining slots in
the module may contain a BRSC, a UILCs, or non-ISDN BRI cards that do not need the
- 48 V power supply of the IPE module (this restriction is due to power supply limitations
for the module). If eight UILCs are used, you may install any other card which could reside
in the IPE module.
• Group all SILCs, UILCs, BRSCs and the MISP that supports them in the same network
group to avoid using junctors for dedicated connections. Figures 1 through 3, beginning
Figure 1: NT8D35 Network module (Large System) on page 19 show typical module
configurations.
• Communication Server 1000E requires that you install the MISP and SILCs in the same
Media Gateway.
Note:
Any IP-based calls using BRI must be transcoded using the DSPs available on an mc32s
or DSP daughterboard.
Figure 1: NT8D35 Network module (Large System) on page 19 shows the NT8D35 Network
module.
Installing ISDN BRI hardware
18 ISDN Basic Rate Interface Installation and Commissioning March 2011
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